./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/fibonacci.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a743aba-ec07-48c1-9e55-e778f29ab19a/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a743aba-ec07-48c1-9e55-e778f29ab19a/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a743aba-ec07-48c1-9e55-e778f29ab19a/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a743aba-ec07-48c1-9e55-e778f29ab19a/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/fibonacci.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a743aba-ec07-48c1-9e55-e778f29ab19a/bin/uautomizer-QkZJyEgLgS/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a743aba-ec07-48c1-9e55-e778f29ab19a/bin/uautomizer-QkZJyEgLgS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7f56768e1b40ef6b1b210f9cfb796e99d1f27ee48ed204adfea165b19bcc995e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 03:54:45,882 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 03:54:45,884 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 03:54:45,904 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 03:54:45,904 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 03:54:45,905 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 03:54:45,907 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 03:54:45,908 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 03:54:45,910 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 03:54:45,911 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 03:54:45,913 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 03:54:45,914 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 03:54:45,914 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 03:54:45,916 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 03:54:45,917 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 03:54:45,918 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 03:54:45,923 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 03:54:45,924 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 03:54:45,926 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 03:54:45,931 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 03:54:45,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 03:54:45,938 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 03:54:45,946 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 03:54:45,947 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 03:54:45,951 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 03:54:45,951 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 03:54:45,951 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 03:54:45,952 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 03:54:45,959 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 03:54:45,960 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 03:54:45,960 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 03:54:45,961 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 03:54:45,962 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 03:54:45,963 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 03:54:45,964 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 03:54:45,964 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 03:54:45,965 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 03:54:45,967 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 03:54:45,968 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 03:54:45,969 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 03:54:45,969 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 03:54:45,971 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a743aba-ec07-48c1-9e55-e778f29ab19a/bin/uautomizer-QkZJyEgLgS/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-23 03:54:46,001 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 03:54:46,002 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 03:54:46,002 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 03:54:46,003 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 03:54:46,004 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 03:54:46,004 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 03:54:46,005 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 03:54:46,005 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 03:54:46,005 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 03:54:46,005 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 03:54:46,006 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 03:54:46,006 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 03:54:46,007 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 03:54:46,007 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 03:54:46,007 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 03:54:46,007 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 03:54:46,008 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 03:54:46,008 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 03:54:46,008 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 03:54:46,008 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 03:54:46,008 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 03:54:46,009 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 03:54:46,009 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 03:54:46,009 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 03:54:46,009 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 03:54:46,009 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 03:54:46,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:54:46,010 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 03:54:46,010 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 03:54:46,011 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 03:54:46,011 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 03:54:46,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 03:54:46,012 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 03:54:46,012 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 03:54:46,012 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 03:54:46,012 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 03:54:46,012 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a743aba-ec07-48c1-9e55-e778f29ab19a/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a743aba-ec07-48c1-9e55-e778f29ab19a/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f56768e1b40ef6b1b210f9cfb796e99d1f27ee48ed204adfea165b19bcc995e [2022-11-23 03:54:46,259 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 03:54:46,279 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 03:54:46,282 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 03:54:46,283 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 03:54:46,283 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 03:54:46,285 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a743aba-ec07-48c1-9e55-e778f29ab19a/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/weaver/fibonacci.wvr.c [2022-11-23 03:54:49,424 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 03:54:49,702 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 03:54:49,703 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a743aba-ec07-48c1-9e55-e778f29ab19a/sv-benchmarks/c/weaver/fibonacci.wvr.c [2022-11-23 03:54:49,711 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a743aba-ec07-48c1-9e55-e778f29ab19a/bin/uautomizer-QkZJyEgLgS/data/f1ebe5e12/9eb916380efd477686cd891e305a8198/FLAG17486785a [2022-11-23 03:54:49,729 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a743aba-ec07-48c1-9e55-e778f29ab19a/bin/uautomizer-QkZJyEgLgS/data/f1ebe5e12/9eb916380efd477686cd891e305a8198 [2022-11-23 03:54:49,736 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 03:54:49,738 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 03:54:49,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 03:54:49,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 03:54:49,746 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 03:54:49,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:54:49" (1/1) ... [2022-11-23 03:54:49,749 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@177204a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:54:49, skipping insertion in model container [2022-11-23 03:54:49,750 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:54:49" (1/1) ... [2022-11-23 03:54:49,758 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 03:54:49,777 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 03:54:49,946 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a743aba-ec07-48c1-9e55-e778f29ab19a/sv-benchmarks/c/weaver/fibonacci.wvr.c[2330,2343] [2022-11-23 03:54:49,952 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:54:49,962 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 03:54:49,987 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a743aba-ec07-48c1-9e55-e778f29ab19a/sv-benchmarks/c/weaver/fibonacci.wvr.c[2330,2343] [2022-11-23 03:54:49,991 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:54:50,007 INFO L208 MainTranslator]: Completed translation [2022-11-23 03:54:50,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:54:50 WrapperNode [2022-11-23 03:54:50,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 03:54:50,009 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 03:54:50,009 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 03:54:50,009 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 03:54:50,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:54:50" (1/1) ... [2022-11-23 03:54:50,046 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:54:50" (1/1) ... [2022-11-23 03:54:50,095 INFO L138 Inliner]: procedures = 23, calls = 28, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 222 [2022-11-23 03:54:50,097 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 03:54:50,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 03:54:50,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 03:54:50,098 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 03:54:50,110 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:54:50" (1/1) ... [2022-11-23 03:54:50,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:54:50" (1/1) ... [2022-11-23 03:54:50,127 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:54:50" (1/1) ... [2022-11-23 03:54:50,128 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:54:50" (1/1) ... [2022-11-23 03:54:50,133 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:54:50" (1/1) ... [2022-11-23 03:54:50,138 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:54:50" (1/1) ... [2022-11-23 03:54:50,151 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:54:50" (1/1) ... [2022-11-23 03:54:50,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:54:50" (1/1) ... [2022-11-23 03:54:50,155 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 03:54:50,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 03:54:50,156 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 03:54:50,156 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 03:54:50,157 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:54:50" (1/1) ... [2022-11-23 03:54:50,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:54:50,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a743aba-ec07-48c1-9e55-e778f29ab19a/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:54:50,207 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a743aba-ec07-48c1-9e55-e778f29ab19a/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 03:54:50,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a743aba-ec07-48c1-9e55-e778f29ab19a/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 03:54:50,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 03:54:50,260 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-23 03:54:50,261 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-23 03:54:50,262 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-23 03:54:50,263 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-23 03:54:50,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 03:54:50,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 03:54:50,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 03:54:50,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 03:54:50,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 03:54:50,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 03:54:50,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 03:54:50,266 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 03:54:50,421 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 03:54:50,425 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 03:54:50,959 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 03:54:50,972 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 03:54:50,972 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 03:54:50,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:54:50 BoogieIcfgContainer [2022-11-23 03:54:50,975 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 03:54:50,978 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 03:54:50,979 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 03:54:50,982 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 03:54:50,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:54:49" (1/3) ... [2022-11-23 03:54:50,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49dd697 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:54:50, skipping insertion in model container [2022-11-23 03:54:50,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:54:50" (2/3) ... [2022-11-23 03:54:50,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49dd697 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:54:50, skipping insertion in model container [2022-11-23 03:54:50,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:54:50" (3/3) ... [2022-11-23 03:54:50,986 INFO L112 eAbstractionObserver]: Analyzing ICFG fibonacci.wvr.c [2022-11-23 03:54:50,996 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-23 03:54:51,008 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 03:54:51,008 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2022-11-23 03:54:51,009 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 03:54:51,224 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-23 03:54:51,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 300 places, 315 transitions, 646 flow [2022-11-23 03:54:51,452 INFO L130 PetriNetUnfolder]: 22/313 cut-off events. [2022-11-23 03:54:51,453 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-23 03:54:51,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 322 conditions, 313 events. 22/313 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 597 event pairs, 0 based on Foata normal form. 0/263 useless extension candidates. Maximal degree in co-relation 239. Up to 2 conditions per place. [2022-11-23 03:54:51,469 INFO L82 GeneralOperation]: Start removeDead. Operand has 300 places, 315 transitions, 646 flow [2022-11-23 03:54:51,489 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 280 places, 294 transitions, 597 flow [2022-11-23 03:54:51,494 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 03:54:51,542 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 280 places, 294 transitions, 597 flow [2022-11-23 03:54:51,545 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 280 places, 294 transitions, 597 flow [2022-11-23 03:54:51,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 280 places, 294 transitions, 597 flow [2022-11-23 03:54:51,698 INFO L130 PetriNetUnfolder]: 21/294 cut-off events. [2022-11-23 03:54:51,698 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-23 03:54:51,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 294 events. 21/294 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 482 event pairs, 0 based on Foata normal form. 0/245 useless extension candidates. Maximal degree in co-relation 239. Up to 2 conditions per place. [2022-11-23 03:54:51,722 INFO L119 LiptonReduction]: Number of co-enabled transitions 29412 [2022-11-23 03:55:29,278 INFO L134 LiptonReduction]: Checked pairs total: 28814 [2022-11-23 03:55:29,279 INFO L136 LiptonReduction]: Total number of compositions: 430 [2022-11-23 03:55:29,298 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 03:55:29,306 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;@aef154f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 03:55:29,307 INFO L358 AbstractCegarLoop]: Starting to check reachability of 58 error locations. [2022-11-23 03:55:29,311 INFO L130 PetriNetUnfolder]: 1/6 cut-off events. [2022-11-23 03:55:29,312 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 03:55:29,312 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:55:29,313 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-23 03:55:29,313 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-23 03:55:29,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:55:29,320 INFO L85 PathProgramCache]: Analyzing trace with hash 42466218, now seen corresponding path program 1 times [2022-11-23 03:55:29,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:55:29,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363077199] [2022-11-23 03:55:29,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:55:29,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:55:29,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:55:29,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:55:29,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:55:29,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363077199] [2022-11-23 03:55:29,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363077199] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:55:29,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:55:29,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 03:55:29,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548852105] [2022-11-23 03:55:29,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:55:29,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 03:55:29,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:55:29,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 03:55:29,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 03:55:29,600 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 745 [2022-11-23 03:55:29,605 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 91 flow. Second operand has 2 states, 2 states have (on average 299.5) internal successors, (599), 2 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:29,605 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:55:29,605 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 745 [2022-11-23 03:55:29,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:55:30,005 INFO L130 PetriNetUnfolder]: 594/835 cut-off events. [2022-11-23 03:55:30,005 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-11-23 03:55:30,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1696 conditions, 835 events. 594/835 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 3813 event pairs, 278 based on Foata normal form. 0/218 useless extension candidates. Maximal degree in co-relation 1564. Up to 826 conditions per place. [2022-11-23 03:55:30,014 INFO L137 encePairwiseOnDemand]: 731/745 looper letters, 25 selfloop transitions, 0 changer transitions 0/27 dead transitions. [2022-11-23 03:55:30,014 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 27 transitions, 113 flow [2022-11-23 03:55:30,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 03:55:30,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-23 03:55:30,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 635 transitions. [2022-11-23 03:55:30,042 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4261744966442953 [2022-11-23 03:55:30,043 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 635 transitions. [2022-11-23 03:55:30,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 635 transitions. [2022-11-23 03:55:30,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:55:30,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 635 transitions. [2022-11-23 03:55:30,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 317.5) internal successors, (635), 2 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:30,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 745.0) internal successors, (2235), 3 states have internal predecessors, (2235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:30,074 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 745.0) internal successors, (2235), 3 states have internal predecessors, (2235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:30,077 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 91 flow. Second operand 2 states and 635 transitions. [2022-11-23 03:55:30,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 27 transitions, 113 flow [2022-11-23 03:55:30,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 27 transitions, 108 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-23 03:55:30,084 INFO L231 Difference]: Finished difference. Result has 30 places, 27 transitions, 58 flow [2022-11-23 03:55:30,087 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=58, PETRI_PLACES=30, PETRI_TRANSITIONS=27} [2022-11-23 03:55:30,096 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -16 predicate places. [2022-11-23 03:55:30,097 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 27 transitions, 58 flow [2022-11-23 03:55:30,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 299.5) internal successors, (599), 2 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:30,098 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:55:30,098 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-23 03:55:30,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 03:55:30,100 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-23 03:55:30,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:55:30,106 INFO L85 PathProgramCache]: Analyzing trace with hash 42466327, now seen corresponding path program 1 times [2022-11-23 03:55:30,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:55:30,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360479868] [2022-11-23 03:55:30,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:55:30,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:55:30,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:55:30,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:55:30,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:55:30,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360479868] [2022-11-23 03:55:30,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360479868] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:55:30,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:55:30,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:55:30,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368636990] [2022-11-23 03:55:30,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:55:30,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:55:30,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:55:30,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:55:30,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:55:30,301 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 745 [2022-11-23 03:55:30,303 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 297.3333333333333) internal successors, (892), 3 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:30,303 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:55:30,304 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 745 [2022-11-23 03:55:30,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:55:30,803 INFO L130 PetriNetUnfolder]: 861/1276 cut-off events. [2022-11-23 03:55:30,803 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-11-23 03:55:30,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2588 conditions, 1276 events. 861/1276 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 6514 event pairs, 233 based on Foata normal form. 0/384 useless extension candidates. Maximal degree in co-relation 2585. Up to 730 conditions per place. [2022-11-23 03:55:30,813 INFO L137 encePairwiseOnDemand]: 741/745 looper letters, 45 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2022-11-23 03:55:30,813 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 48 transitions, 197 flow [2022-11-23 03:55:30,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:55:30,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:55:30,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 937 transitions. [2022-11-23 03:55:30,818 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4192393736017897 [2022-11-23 03:55:30,818 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 937 transitions. [2022-11-23 03:55:30,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 937 transitions. [2022-11-23 03:55:30,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:55:30,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 937 transitions. [2022-11-23 03:55:30,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 312.3333333333333) internal successors, (937), 3 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:30,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:30,832 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:30,832 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 58 flow. Second operand 3 states and 937 transitions. [2022-11-23 03:55:30,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 48 transitions, 197 flow [2022-11-23 03:55:30,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 48 transitions, 197 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 03:55:30,835 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 72 flow [2022-11-23 03:55:30,835 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=33, PETRI_TRANSITIONS=28} [2022-11-23 03:55:30,836 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -13 predicate places. [2022-11-23 03:55:30,836 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 72 flow [2022-11-23 03:55:30,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 297.3333333333333) internal successors, (892), 3 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:30,838 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:55:30,838 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-23 03:55:30,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 03:55:30,839 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-23 03:55:30,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:55:30,840 INFO L85 PathProgramCache]: Analyzing trace with hash 42466330, now seen corresponding path program 1 times [2022-11-23 03:55:30,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:55:30,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632243288] [2022-11-23 03:55:30,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:55:30,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:55:30,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:55:31,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:55:31,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:55:31,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632243288] [2022-11-23 03:55:31,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632243288] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:55:31,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:55:31,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 03:55:31,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956786229] [2022-11-23 03:55:31,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:55:31,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:55:31,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:55:31,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:55:31,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:55:31,045 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 745 [2022-11-23 03:55:31,047 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 296.0) internal successors, (888), 3 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:31,047 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:55:31,047 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 745 [2022-11-23 03:55:31,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:55:31,387 INFO L130 PetriNetUnfolder]: 583/889 cut-off events. [2022-11-23 03:55:31,387 INFO L131 PetriNetUnfolder]: For 42/61 co-relation queries the response was YES. [2022-11-23 03:55:31,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1907 conditions, 889 events. 583/889 cut-off events. For 42/61 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 4807 event pairs, 358 based on Foata normal form. 19/334 useless extension candidates. Maximal degree in co-relation 1902. Up to 882 conditions per place. [2022-11-23 03:55:31,393 INFO L137 encePairwiseOnDemand]: 742/745 looper letters, 23 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2022-11-23 03:55:31,393 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 26 transitions, 116 flow [2022-11-23 03:55:31,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:55:31,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:55:31,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 910 transitions. [2022-11-23 03:55:31,398 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.407158836689038 [2022-11-23 03:55:31,398 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 910 transitions. [2022-11-23 03:55:31,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 910 transitions. [2022-11-23 03:55:31,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:55:31,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 910 transitions. [2022-11-23 03:55:31,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 303.3333333333333) internal successors, (910), 3 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:31,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:31,409 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:31,410 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 72 flow. Second operand 3 states and 910 transitions. [2022-11-23 03:55:31,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 26 transitions, 116 flow [2022-11-23 03:55:31,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 26 transitions, 114 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 03:55:31,411 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 68 flow [2022-11-23 03:55:31,412 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2022-11-23 03:55:31,413 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -14 predicate places. [2022-11-23 03:55:31,414 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 68 flow [2022-11-23 03:55:31,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 296.0) internal successors, (888), 3 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:31,416 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:55:31,416 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-23 03:55:31,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 03:55:31,416 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-23 03:55:31,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:55:31,417 INFO L85 PathProgramCache]: Analyzing trace with hash 42466304, now seen corresponding path program 1 times [2022-11-23 03:55:31,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:55:31,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434906793] [2022-11-23 03:55:31,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:55:31,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:55:31,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:55:31,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:55:31,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:55:31,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434906793] [2022-11-23 03:55:31,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434906793] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:55:31,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:55:31,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 03:55:31,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132513418] [2022-11-23 03:55:31,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:55:31,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:55:31,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:55:31,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:55:31,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:55:31,650 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 745 [2022-11-23 03:55:31,652 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 296.0) internal successors, (888), 3 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:31,653 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:55:31,653 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 745 [2022-11-23 03:55:31,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:55:31,921 INFO L130 PetriNetUnfolder]: 498/760 cut-off events. [2022-11-23 03:55:31,922 INFO L131 PetriNetUnfolder]: For 41/60 co-relation queries the response was YES. [2022-11-23 03:55:31,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1626 conditions, 760 events. 498/760 cut-off events. For 41/60 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 3978 event pairs, 301 based on Foata normal form. 19/304 useless extension candidates. Maximal degree in co-relation 1621. Up to 754 conditions per place. [2022-11-23 03:55:31,930 INFO L137 encePairwiseOnDemand]: 743/745 looper letters, 22 selfloop transitions, 1 changer transitions 0/25 dead transitions. [2022-11-23 03:55:31,930 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 25 transitions, 112 flow [2022-11-23 03:55:31,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:55:31,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:55:31,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 908 transitions. [2022-11-23 03:55:31,933 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40626398210290826 [2022-11-23 03:55:31,935 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 908 transitions. [2022-11-23 03:55:31,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 908 transitions. [2022-11-23 03:55:31,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:55:31,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 908 transitions. [2022-11-23 03:55:31,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 302.6666666666667) internal successors, (908), 3 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:31,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:31,949 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:31,950 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 68 flow. Second operand 3 states and 908 transitions. [2022-11-23 03:55:31,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 25 transitions, 112 flow [2022-11-23 03:55:31,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 25 transitions, 111 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 03:55:31,952 INFO L231 Difference]: Finished difference. Result has 32 places, 25 transitions, 67 flow [2022-11-23 03:55:31,952 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=32, PETRI_TRANSITIONS=25} [2022-11-23 03:55:31,954 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -14 predicate places. [2022-11-23 03:55:31,954 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 67 flow [2022-11-23 03:55:31,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 296.0) internal successors, (888), 3 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:31,955 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:55:31,956 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-23 03:55:31,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 03:55:31,957 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-23 03:55:31,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:55:31,958 INFO L85 PathProgramCache]: Analyzing trace with hash 42466306, now seen corresponding path program 1 times [2022-11-23 03:55:31,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:55:31,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731307278] [2022-11-23 03:55:31,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:55:31,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:55:31,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:55:32,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:55:32,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:55:32,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731307278] [2022-11-23 03:55:32,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731307278] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:55:32,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:55:32,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 03:55:32,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010964567] [2022-11-23 03:55:32,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:55:32,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:55:32,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:55:32,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:55:32,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:55:32,029 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 745 [2022-11-23 03:55:32,030 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 67 flow. Second operand has 3 states, 3 states have (on average 296.0) internal successors, (888), 3 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:32,031 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:55:32,031 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 745 [2022-11-23 03:55:32,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:55:32,270 INFO L130 PetriNetUnfolder]: 413/631 cut-off events. [2022-11-23 03:55:32,271 INFO L131 PetriNetUnfolder]: For 41/60 co-relation queries the response was YES. [2022-11-23 03:55:32,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1366 conditions, 631 events. 413/631 cut-off events. For 41/60 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 3150 event pairs, 244 based on Foata normal form. 19/274 useless extension candidates. Maximal degree in co-relation 1361. Up to 626 conditions per place. [2022-11-23 03:55:32,275 INFO L137 encePairwiseOnDemand]: 743/745 looper letters, 21 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2022-11-23 03:55:32,275 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 24 transitions, 109 flow [2022-11-23 03:55:32,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:55:32,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:55:32,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 907 transitions. [2022-11-23 03:55:32,278 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4058165548098434 [2022-11-23 03:55:32,278 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 907 transitions. [2022-11-23 03:55:32,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 907 transitions. [2022-11-23 03:55:32,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:55:32,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 907 transitions. [2022-11-23 03:55:32,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 302.3333333333333) internal successors, (907), 3 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:32,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:32,289 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:32,289 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 67 flow. Second operand 3 states and 907 transitions. [2022-11-23 03:55:32,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 24 transitions, 109 flow [2022-11-23 03:55:32,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 24 transitions, 108 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 03:55:32,291 INFO L231 Difference]: Finished difference. Result has 32 places, 24 transitions, 66 flow [2022-11-23 03:55:32,291 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2022-11-23 03:55:32,296 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -14 predicate places. [2022-11-23 03:55:32,296 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 66 flow [2022-11-23 03:55:32,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 296.0) internal successors, (888), 3 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:32,298 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:55:32,298 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-23 03:55:32,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 03:55:32,299 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-23 03:55:32,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:55:32,300 INFO L85 PathProgramCache]: Analyzing trace with hash 42466309, now seen corresponding path program 1 times [2022-11-23 03:55:32,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:55:32,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643898604] [2022-11-23 03:55:32,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:55:32,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:55:32,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:55:32,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:55:32,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:55:32,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643898604] [2022-11-23 03:55:32,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643898604] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:55:32,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:55:32,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 03:55:32,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109882464] [2022-11-23 03:55:32,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:55:32,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:55:32,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:55:32,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:55:32,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:55:32,377 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 745 [2022-11-23 03:55:32,379 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 296.0) internal successors, (888), 3 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:32,379 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:55:32,379 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 745 [2022-11-23 03:55:32,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:55:32,556 INFO L130 PetriNetUnfolder]: 328/502 cut-off events. [2022-11-23 03:55:32,556 INFO L131 PetriNetUnfolder]: For 41/60 co-relation queries the response was YES. [2022-11-23 03:55:32,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1106 conditions, 502 events. 328/502 cut-off events. For 41/60 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 2377 event pairs, 187 based on Foata normal form. 19/244 useless extension candidates. Maximal degree in co-relation 1101. Up to 498 conditions per place. [2022-11-23 03:55:32,559 INFO L137 encePairwiseOnDemand]: 743/745 looper letters, 20 selfloop transitions, 1 changer transitions 0/23 dead transitions. [2022-11-23 03:55:32,559 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 23 transitions, 106 flow [2022-11-23 03:55:32,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:55:32,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:55:32,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 906 transitions. [2022-11-23 03:55:32,563 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4053691275167785 [2022-11-23 03:55:32,563 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 906 transitions. [2022-11-23 03:55:32,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 906 transitions. [2022-11-23 03:55:32,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:55:32,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 906 transitions. [2022-11-23 03:55:32,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 302.0) internal successors, (906), 3 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:32,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:32,572 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:32,573 INFO L175 Difference]: Start difference. First operand has 32 places, 24 transitions, 66 flow. Second operand 3 states and 906 transitions. [2022-11-23 03:55:32,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 23 transitions, 106 flow [2022-11-23 03:55:32,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 23 transitions, 105 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 03:55:32,574 INFO L231 Difference]: Finished difference. Result has 32 places, 23 transitions, 65 flow [2022-11-23 03:55:32,575 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=32, PETRI_TRANSITIONS=23} [2022-11-23 03:55:32,577 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -14 predicate places. [2022-11-23 03:55:32,577 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 65 flow [2022-11-23 03:55:32,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 296.0) internal successors, (888), 3 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:32,578 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:55:32,578 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 03:55:32,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 03:55:32,579 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-23 03:55:32,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:55:32,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1316457643, now seen corresponding path program 1 times [2022-11-23 03:55:32,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:55:32,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421402197] [2022-11-23 03:55:32,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:55:32,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:55:32,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:55:32,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:55:32,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:55:32,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421402197] [2022-11-23 03:55:32,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421402197] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:55:32,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604632092] [2022-11-23 03:55:32,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:55:32,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:55:32,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a743aba-ec07-48c1-9e55-e778f29ab19a/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:55:32,683 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a743aba-ec07-48c1-9e55-e778f29ab19a/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:55:32,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a743aba-ec07-48c1-9e55-e778f29ab19a/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 03:55:32,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:55:32,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 03:55:32,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:55:32,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:55:32,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:55:32,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:55:32,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604632092] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:55:32,910 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:55:32,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-23 03:55:32,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090097606] [2022-11-23 03:55:32,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:55:32,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 03:55:32,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:55:32,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 03:55:32,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:55:32,950 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 745 [2022-11-23 03:55:32,953 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 23 transitions, 65 flow. Second operand has 7 states, 7 states have (on average 297.42857142857144) internal successors, (2082), 7 states have internal predecessors, (2082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:32,953 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:55:32,954 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 745 [2022-11-23 03:55:32,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:55:33,564 INFO L130 PetriNetUnfolder]: 848/1235 cut-off events. [2022-11-23 03:55:33,565 INFO L131 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2022-11-23 03:55:33,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2742 conditions, 1235 events. 848/1235 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5735 event pairs, 77 based on Foata normal form. 0/567 useless extension candidates. Maximal degree in co-relation 2737. Up to 316 conditions per place. [2022-11-23 03:55:33,571 INFO L137 encePairwiseOnDemand]: 741/745 looper letters, 91 selfloop transitions, 9 changer transitions 0/101 dead transitions. [2022-11-23 03:55:33,572 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 101 transitions, 447 flow [2022-11-23 03:55:33,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 03:55:33,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-23 03:55:33,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2175 transitions. [2022-11-23 03:55:33,578 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4170661553211889 [2022-11-23 03:55:33,578 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2175 transitions. [2022-11-23 03:55:33,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2175 transitions. [2022-11-23 03:55:33,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:55:33,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2175 transitions. [2022-11-23 03:55:33,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 310.7142857142857) internal successors, (2175), 7 states have internal predecessors, (2175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:33,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 745.0) internal successors, (5960), 8 states have internal predecessors, (5960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:33,594 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 745.0) internal successors, (5960), 8 states have internal predecessors, (5960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:33,595 INFO L175 Difference]: Start difference. First operand has 32 places, 23 transitions, 65 flow. Second operand 7 states and 2175 transitions. [2022-11-23 03:55:33,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 101 transitions, 447 flow [2022-11-23 03:55:33,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 101 transitions, 446 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 03:55:33,597 INFO L231 Difference]: Finished difference. Result has 40 places, 29 transitions, 123 flow [2022-11-23 03:55:33,597 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=123, PETRI_PLACES=40, PETRI_TRANSITIONS=29} [2022-11-23 03:55:33,598 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -6 predicate places. [2022-11-23 03:55:33,598 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 29 transitions, 123 flow [2022-11-23 03:55:33,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 297.42857142857144) internal successors, (2082), 7 states have internal predecessors, (2082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:33,599 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:55:33,599 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-11-23 03:55:33,608 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a743aba-ec07-48c1-9e55-e778f29ab19a/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 03:55:33,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a743aba-ec07-48c1-9e55-e778f29ab19a/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-23 03:55:33,808 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-23 03:55:33,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:55:33,808 INFO L85 PathProgramCache]: Analyzing trace with hash -2139484585, now seen corresponding path program 1 times [2022-11-23 03:55:33,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:55:33,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463801658] [2022-11-23 03:55:33,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:55:33,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:55:33,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:55:33,892 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:55:33,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:55:33,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463801658] [2022-11-23 03:55:33,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463801658] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:55:33,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088844826] [2022-11-23 03:55:33,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:55:33,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:55:33,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a743aba-ec07-48c1-9e55-e778f29ab19a/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:55:33,895 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a743aba-ec07-48c1-9e55-e778f29ab19a/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:55:33,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a743aba-ec07-48c1-9e55-e778f29ab19a/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 03:55:34,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:55:34,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 03:55:34,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:55:34,044 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:55:34,044 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:55:34,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088844826] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:55:34,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 03:55:34,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2022-11-23 03:55:34,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763430189] [2022-11-23 03:55:34,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:55:34,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:55:34,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:55:34,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:55:34,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-23 03:55:34,059 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 745 [2022-11-23 03:55:34,060 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 29 transitions, 123 flow. Second operand has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:34,061 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:55:34,061 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 745 [2022-11-23 03:55:34,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:55:34,477 INFO L130 PetriNetUnfolder]: 747/1112 cut-off events. [2022-11-23 03:55:34,477 INFO L131 PetriNetUnfolder]: For 200/200 co-relation queries the response was YES. [2022-11-23 03:55:34,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2676 conditions, 1112 events. 747/1112 cut-off events. For 200/200 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5313 event pairs, 44 based on Foata normal form. 44/620 useless extension candidates. Maximal degree in co-relation 2668. Up to 680 conditions per place. [2022-11-23 03:55:34,485 INFO L137 encePairwiseOnDemand]: 742/745 looper letters, 63 selfloop transitions, 3 changer transitions 0/67 dead transitions. [2022-11-23 03:55:34,485 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 67 transitions, 320 flow [2022-11-23 03:55:34,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:55:34,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 03:55:34,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1546 transitions. [2022-11-23 03:55:34,489 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41503355704697986 [2022-11-23 03:55:34,490 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1546 transitions. [2022-11-23 03:55:34,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1546 transitions. [2022-11-23 03:55:34,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:55:34,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1546 transitions. [2022-11-23 03:55:34,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 309.2) internal successors, (1546), 5 states have internal predecessors, (1546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:34,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 745.0) internal successors, (4470), 6 states have internal predecessors, (4470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:34,501 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 745.0) internal successors, (4470), 6 states have internal predecessors, (4470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:34,501 INFO L175 Difference]: Start difference. First operand has 40 places, 29 transitions, 123 flow. Second operand 5 states and 1546 transitions. [2022-11-23 03:55:34,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 67 transitions, 320 flow [2022-11-23 03:55:34,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 67 transitions, 312 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-11-23 03:55:34,507 INFO L231 Difference]: Finished difference. Result has 41 places, 25 transitions, 94 flow [2022-11-23 03:55:34,508 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=94, PETRI_PLACES=41, PETRI_TRANSITIONS=25} [2022-11-23 03:55:34,510 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -5 predicate places. [2022-11-23 03:55:34,510 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 25 transitions, 94 flow [2022-11-23 03:55:34,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:34,511 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:55:34,511 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 03:55:34,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a743aba-ec07-48c1-9e55-e778f29ab19a/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 03:55:34,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a743aba-ec07-48c1-9e55-e778f29ab19a/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:55:34,717 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-23 03:55:34,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:55:34,717 INFO L85 PathProgramCache]: Analyzing trace with hash -2125109705, now seen corresponding path program 1 times [2022-11-23 03:55:34,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:55:34,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733351048] [2022-11-23 03:55:34,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:55:34,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:55:34,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:55:34,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:55:34,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:55:34,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733351048] [2022-11-23 03:55:34,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733351048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:55:34,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:55:34,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 03:55:34,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624184735] [2022-11-23 03:55:34,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:55:34,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:55:34,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:55:34,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:55:34,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:55:34,790 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 745 [2022-11-23 03:55:34,791 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 25 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 296.6666666666667) internal successors, (890), 3 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:34,792 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:55:34,792 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 745 [2022-11-23 03:55:34,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:55:35,015 INFO L130 PetriNetUnfolder]: 534/814 cut-off events. [2022-11-23 03:55:35,015 INFO L131 PetriNetUnfolder]: For 404/434 co-relation queries the response was YES. [2022-11-23 03:55:35,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1944 conditions, 814 events. 534/814 cut-off events. For 404/434 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4130 event pairs, 310 based on Foata normal form. 30/475 useless extension candidates. Maximal degree in co-relation 1935. Up to 810 conditions per place. [2022-11-23 03:55:35,020 INFO L137 encePairwiseOnDemand]: 742/745 looper letters, 20 selfloop transitions, 1 changer transitions 0/23 dead transitions. [2022-11-23 03:55:35,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 23 transitions, 132 flow [2022-11-23 03:55:35,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:55:35,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:55:35,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 904 transitions. [2022-11-23 03:55:35,024 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40447427293064875 [2022-11-23 03:55:35,025 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 904 transitions. [2022-11-23 03:55:35,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 904 transitions. [2022-11-23 03:55:35,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:55:35,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 904 transitions. [2022-11-23 03:55:35,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 301.3333333333333) internal successors, (904), 3 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:35,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:35,033 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:35,033 INFO L175 Difference]: Start difference. First operand has 41 places, 25 transitions, 94 flow. Second operand 3 states and 904 transitions. [2022-11-23 03:55:35,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 23 transitions, 132 flow [2022-11-23 03:55:35,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 23 transitions, 127 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-23 03:55:35,035 INFO L231 Difference]: Finished difference. Result has 38 places, 23 transitions, 87 flow [2022-11-23 03:55:35,035 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=38, PETRI_TRANSITIONS=23} [2022-11-23 03:55:35,036 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -8 predicate places. [2022-11-23 03:55:35,036 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 23 transitions, 87 flow [2022-11-23 03:55:35,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 296.6666666666667) internal successors, (890), 3 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:35,037 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:55:35,037 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 03:55:35,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 03:55:35,037 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-23 03:55:35,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:55:35,038 INFO L85 PathProgramCache]: Analyzing trace with hash -2125109644, now seen corresponding path program 1 times [2022-11-23 03:55:35,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:55:35,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862423454] [2022-11-23 03:55:35,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:55:35,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:55:35,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:55:35,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:55:35,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:55:35,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862423454] [2022-11-23 03:55:35,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862423454] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:55:35,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:55:35,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:55:35,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975653258] [2022-11-23 03:55:35,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:55:35,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:55:35,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:55:35,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:55:35,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:55:35,099 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 745 [2022-11-23 03:55:35,100 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 23 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 298.0) internal successors, (894), 3 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:35,100 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:55:35,101 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 745 [2022-11-23 03:55:35,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:55:35,397 INFO L130 PetriNetUnfolder]: 582/1022 cut-off events. [2022-11-23 03:55:35,398 INFO L131 PetriNetUnfolder]: For 743/795 co-relation queries the response was YES. [2022-11-23 03:55:35,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2501 conditions, 1022 events. 582/1022 cut-off events. For 743/795 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5520 event pairs, 317 based on Foata normal form. 52/752 useless extension candidates. Maximal degree in co-relation 2492. Up to 647 conditions per place. [2022-11-23 03:55:35,404 INFO L137 encePairwiseOnDemand]: 741/745 looper letters, 35 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2022-11-23 03:55:35,404 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 38 transitions, 220 flow [2022-11-23 03:55:35,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:55:35,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:55:35,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 919 transitions. [2022-11-23 03:55:35,408 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41118568232662195 [2022-11-23 03:55:35,408 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 919 transitions. [2022-11-23 03:55:35,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 919 transitions. [2022-11-23 03:55:35,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:55:35,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 919 transitions. [2022-11-23 03:55:35,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 306.3333333333333) internal successors, (919), 3 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:35,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:35,416 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:35,416 INFO L175 Difference]: Start difference. First operand has 38 places, 23 transitions, 87 flow. Second operand 3 states and 919 transitions. [2022-11-23 03:55:35,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 38 transitions, 220 flow [2022-11-23 03:55:35,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 38 transitions, 219 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 03:55:35,418 INFO L231 Difference]: Finished difference. Result has 40 places, 24 transitions, 100 flow [2022-11-23 03:55:35,418 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=40, PETRI_TRANSITIONS=24} [2022-11-23 03:55:35,419 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -6 predicate places. [2022-11-23 03:55:35,419 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 24 transitions, 100 flow [2022-11-23 03:55:35,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 298.0) internal successors, (894), 3 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:35,420 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:55:35,420 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 03:55:35,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 03:55:35,420 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-23 03:55:35,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:55:35,421 INFO L85 PathProgramCache]: Analyzing trace with hash -2125109673, now seen corresponding path program 1 times [2022-11-23 03:55:35,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:55:35,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318660891] [2022-11-23 03:55:35,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:55:35,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:55:35,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:55:35,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:55:35,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:55:35,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318660891] [2022-11-23 03:55:35,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318660891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:55:35,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:55:35,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 03:55:35,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733930589] [2022-11-23 03:55:35,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:55:35,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:55:35,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:55:35,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:55:35,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:55:35,489 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 745 [2022-11-23 03:55:35,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 24 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 296.6666666666667) internal successors, (890), 3 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:35,490 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:55:35,490 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 745 [2022-11-23 03:55:35,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:55:35,708 INFO L130 PetriNetUnfolder]: 453/800 cut-off events. [2022-11-23 03:55:35,708 INFO L131 PetriNetUnfolder]: For 503/571 co-relation queries the response was YES. [2022-11-23 03:55:35,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2128 conditions, 800 events. 453/800 cut-off events. For 503/571 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4497 event pairs, 399 based on Foata normal form. 68/672 useless extension candidates. Maximal degree in co-relation 2118. Up to 796 conditions per place. [2022-11-23 03:55:35,713 INFO L137 encePairwiseOnDemand]: 743/745 looper letters, 20 selfloop transitions, 1 changer transitions 0/23 dead transitions. [2022-11-23 03:55:35,713 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 23 transitions, 140 flow [2022-11-23 03:55:35,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:55:35,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:55:35,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 902 transitions. [2022-11-23 03:55:35,717 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.403579418344519 [2022-11-23 03:55:35,717 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 902 transitions. [2022-11-23 03:55:35,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 902 transitions. [2022-11-23 03:55:35,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:55:35,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 902 transitions. [2022-11-23 03:55:35,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 300.6666666666667) internal successors, (902), 3 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:35,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:35,738 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:35,738 INFO L175 Difference]: Start difference. First operand has 40 places, 24 transitions, 100 flow. Second operand 3 states and 902 transitions. [2022-11-23 03:55:35,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 23 transitions, 140 flow [2022-11-23 03:55:35,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 23 transitions, 138 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 03:55:35,740 INFO L231 Difference]: Finished difference. Result has 40 places, 23 transitions, 98 flow [2022-11-23 03:55:35,740 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=40, PETRI_TRANSITIONS=23} [2022-11-23 03:55:35,741 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -6 predicate places. [2022-11-23 03:55:35,741 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 23 transitions, 98 flow [2022-11-23 03:55:35,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 296.6666666666667) internal successors, (890), 3 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:35,742 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:55:35,742 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 03:55:35,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 03:55:35,742 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-23 03:55:35,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:55:35,743 INFO L85 PathProgramCache]: Analyzing trace with hash -2125109672, now seen corresponding path program 1 times [2022-11-23 03:55:35,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:55:35,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980316949] [2022-11-23 03:55:35,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:55:35,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:55:35,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:55:35,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:55:35,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:55:35,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980316949] [2022-11-23 03:55:35,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980316949] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:55:35,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:55:35,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 03:55:35,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909945216] [2022-11-23 03:55:35,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:55:35,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:55:35,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:55:35,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:55:35,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:55:35,822 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 745 [2022-11-23 03:55:35,823 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 23 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 296.6666666666667) internal successors, (890), 3 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:35,823 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:55:35,824 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 745 [2022-11-23 03:55:35,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:55:36,008 INFO L130 PetriNetUnfolder]: 367/650 cut-off events. [2022-11-23 03:55:36,008 INFO L131 PetriNetUnfolder]: For 415/475 co-relation queries the response was YES. [2022-11-23 03:55:36,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1737 conditions, 650 events. 367/650 cut-off events. For 415/475 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3437 event pairs, 317 based on Foata normal form. 60/578 useless extension candidates. Maximal degree in co-relation 1727. Up to 646 conditions per place. [2022-11-23 03:55:36,013 INFO L137 encePairwiseOnDemand]: 743/745 looper letters, 19 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2022-11-23 03:55:36,013 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 22 transitions, 136 flow [2022-11-23 03:55:36,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:55:36,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:55:36,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 901 transitions. [2022-11-23 03:55:36,017 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40313199105145414 [2022-11-23 03:55:36,017 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 901 transitions. [2022-11-23 03:55:36,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 901 transitions. [2022-11-23 03:55:36,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:55:36,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 901 transitions. [2022-11-23 03:55:36,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 300.3333333333333) internal successors, (901), 3 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:36,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:36,023 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:36,024 INFO L175 Difference]: Start difference. First operand has 40 places, 23 transitions, 98 flow. Second operand 3 states and 901 transitions. [2022-11-23 03:55:36,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 22 transitions, 136 flow [2022-11-23 03:55:36,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 22 transitions, 135 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 03:55:36,026 INFO L231 Difference]: Finished difference. Result has 40 places, 22 transitions, 97 flow [2022-11-23 03:55:36,026 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=40, PETRI_TRANSITIONS=22} [2022-11-23 03:55:36,026 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -6 predicate places. [2022-11-23 03:55:36,027 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 22 transitions, 97 flow [2022-11-23 03:55:36,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 296.6666666666667) internal successors, (890), 3 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:36,027 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:55:36,027 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 03:55:36,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 03:55:36,028 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-23 03:55:36,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:55:36,028 INFO L85 PathProgramCache]: Analyzing trace with hash -2125109674, now seen corresponding path program 1 times [2022-11-23 03:55:36,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:55:36,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281428607] [2022-11-23 03:55:36,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:55:36,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:55:36,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:55:36,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:55:36,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:55:36,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281428607] [2022-11-23 03:55:36,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281428607] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:55:36,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:55:36,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 03:55:36,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776241114] [2022-11-23 03:55:36,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:55:36,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:55:36,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:55:36,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:55:36,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:55:36,107 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 745 [2022-11-23 03:55:36,108 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 22 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 296.6666666666667) internal successors, (890), 3 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:36,108 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:55:36,108 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 745 [2022-11-23 03:55:36,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:55:36,313 INFO L130 PetriNetUnfolder]: 281/500 cut-off events. [2022-11-23 03:55:36,313 INFO L131 PetriNetUnfolder]: For 330/382 co-relation queries the response was YES. [2022-11-23 03:55:36,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1378 conditions, 500 events. 281/500 cut-off events. For 330/382 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2420 event pairs, 235 based on Foata normal form. 52/484 useless extension candidates. Maximal degree in co-relation 1368. Up to 496 conditions per place. [2022-11-23 03:55:36,316 INFO L137 encePairwiseOnDemand]: 743/745 looper letters, 18 selfloop transitions, 1 changer transitions 0/21 dead transitions. [2022-11-23 03:55:36,316 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 21 transitions, 133 flow [2022-11-23 03:55:36,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:55:36,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:55:36,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 900 transitions. [2022-11-23 03:55:36,319 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40268456375838924 [2022-11-23 03:55:36,319 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 900 transitions. [2022-11-23 03:55:36,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 900 transitions. [2022-11-23 03:55:36,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:55:36,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 900 transitions. [2022-11-23 03:55:36,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 300.0) internal successors, (900), 3 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:36,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:36,326 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:36,326 INFO L175 Difference]: Start difference. First operand has 40 places, 22 transitions, 97 flow. Second operand 3 states and 900 transitions. [2022-11-23 03:55:36,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 21 transitions, 133 flow [2022-11-23 03:55:36,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 21 transitions, 132 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 03:55:36,328 INFO L231 Difference]: Finished difference. Result has 40 places, 21 transitions, 96 flow [2022-11-23 03:55:36,328 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=40, PETRI_TRANSITIONS=21} [2022-11-23 03:55:36,329 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -6 predicate places. [2022-11-23 03:55:36,330 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 21 transitions, 96 flow [2022-11-23 03:55:36,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 296.6666666666667) internal successors, (890), 3 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:36,330 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:55:36,330 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:55:36,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 03:55:36,331 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-23 03:55:36,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:55:36,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1453888089, now seen corresponding path program 1 times [2022-11-23 03:55:36,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:55:36,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874724982] [2022-11-23 03:55:36,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:55:36,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:55:36,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:55:36,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:55:36,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:55:36,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874724982] [2022-11-23 03:55:36,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874724982] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:55:36,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696525306] [2022-11-23 03:55:36,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:55:36,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:55:36,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a743aba-ec07-48c1-9e55-e778f29ab19a/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:55:36,391 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a743aba-ec07-48c1-9e55-e778f29ab19a/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:55:36,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a743aba-ec07-48c1-9e55-e778f29ab19a/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 03:55:36,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:55:36,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 03:55:36,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:55:36,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:55:36,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:55:36,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:55:36,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696525306] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:55:36,556 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:55:36,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-23 03:55:36,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690261731] [2022-11-23 03:55:36,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:55:36,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 03:55:36,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:55:36,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 03:55:36,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:55:36,576 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 745 [2022-11-23 03:55:36,578 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 21 transitions, 96 flow. Second operand has 7 states, 7 states have (on average 297.7142857142857) internal successors, (2084), 7 states have internal predecessors, (2084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:36,579 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:55:36,579 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 745 [2022-11-23 03:55:36,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:55:36,988 INFO L130 PetriNetUnfolder]: 678/1118 cut-off events. [2022-11-23 03:55:36,989 INFO L131 PetriNetUnfolder]: For 926/978 co-relation queries the response was YES. [2022-11-23 03:55:36,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3049 conditions, 1118 events. 678/1118 cut-off events. For 926/978 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5385 event pairs, 153 based on Foata normal form. 52/1008 useless extension candidates. Maximal degree in co-relation 3039. Up to 347 conditions per place. [2022-11-23 03:55:36,996 INFO L137 encePairwiseOnDemand]: 741/745 looper letters, 71 selfloop transitions, 9 changer transitions 0/81 dead transitions. [2022-11-23 03:55:36,996 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 81 transitions, 533 flow [2022-11-23 03:55:36,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 03:55:36,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-23 03:55:37,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2131 transitions. [2022-11-23 03:55:37,002 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40862895493767976 [2022-11-23 03:55:37,002 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2131 transitions. [2022-11-23 03:55:37,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2131 transitions. [2022-11-23 03:55:37,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:55:37,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2131 transitions. [2022-11-23 03:55:37,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 304.42857142857144) internal successors, (2131), 7 states have internal predecessors, (2131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:37,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 745.0) internal successors, (5960), 8 states have internal predecessors, (5960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:37,016 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 745.0) internal successors, (5960), 8 states have internal predecessors, (5960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:37,016 INFO L175 Difference]: Start difference. First operand has 40 places, 21 transitions, 96 flow. Second operand 7 states and 2131 transitions. [2022-11-23 03:55:37,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 81 transitions, 533 flow [2022-11-23 03:55:37,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 81 transitions, 532 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 03:55:37,019 INFO L231 Difference]: Finished difference. Result has 48 places, 27 transitions, 154 flow [2022-11-23 03:55:37,019 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=154, PETRI_PLACES=48, PETRI_TRANSITIONS=27} [2022-11-23 03:55:37,019 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2022-11-23 03:55:37,020 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 27 transitions, 154 flow [2022-11-23 03:55:37,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 297.7142857142857) internal successors, (2084), 7 states have internal predecessors, (2084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:37,020 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:55:37,021 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:55:37,027 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a743aba-ec07-48c1-9e55-e778f29ab19a/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-23 03:55:37,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a743aba-ec07-48c1-9e55-e778f29ab19a/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-23 03:55:37,228 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-23 03:55:37,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:55:37,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1453888085, now seen corresponding path program 1 times [2022-11-23 03:55:37,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:55:37,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587057970] [2022-11-23 03:55:37,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:55:37,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:55:37,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:55:37,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:55:37,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:55:37,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587057970] [2022-11-23 03:55:37,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587057970] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:55:37,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177425799] [2022-11-23 03:55:37,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:55:37,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:55:37,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a743aba-ec07-48c1-9e55-e778f29ab19a/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:55:37,286 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a743aba-ec07-48c1-9e55-e778f29ab19a/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:55:37,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a743aba-ec07-48c1-9e55-e778f29ab19a/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 03:55:37,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:55:37,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 03:55:37,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:55:37,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:55:37,435 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:55:37,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177425799] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:55:37,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 03:55:37,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-23 03:55:37,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803102396] [2022-11-23 03:55:37,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:55:37,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:55:37,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:55:37,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:55:37,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:55:37,448 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 745 [2022-11-23 03:55:37,450 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 27 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 297.75) internal successors, (1191), 4 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:37,450 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:55:37,450 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 745 [2022-11-23 03:55:37,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:55:37,754 INFO L130 PetriNetUnfolder]: 539/947 cut-off events. [2022-11-23 03:55:37,754 INFO L131 PetriNetUnfolder]: For 953/1001 co-relation queries the response was YES. [2022-11-23 03:55:37,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2936 conditions, 947 events. 539/947 cut-off events. For 953/1001 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4793 event pairs, 30 based on Foata normal form. 112/1057 useless extension candidates. Maximal degree in co-relation 2923. Up to 707 conditions per place. [2022-11-23 03:55:37,761 INFO L137 encePairwiseOnDemand]: 742/745 looper letters, 41 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2022-11-23 03:55:37,761 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 44 transitions, 313 flow [2022-11-23 03:55:37,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 03:55:37,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 03:55:37,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1213 transitions. [2022-11-23 03:55:37,765 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4070469798657718 [2022-11-23 03:55:37,765 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1213 transitions. [2022-11-23 03:55:37,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1213 transitions. [2022-11-23 03:55:37,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:55:37,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1213 transitions. [2022-11-23 03:55:37,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 303.25) internal successors, (1213), 4 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:37,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 745.0) internal successors, (3725), 5 states have internal predecessors, (3725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:37,773 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 745.0) internal successors, (3725), 5 states have internal predecessors, (3725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:37,773 INFO L175 Difference]: Start difference. First operand has 48 places, 27 transitions, 154 flow. Second operand 4 states and 1213 transitions. [2022-11-23 03:55:37,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 44 transitions, 313 flow [2022-11-23 03:55:37,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 44 transitions, 305 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-11-23 03:55:37,777 INFO L231 Difference]: Finished difference. Result has 48 places, 23 transitions, 123 flow [2022-11-23 03:55:37,777 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=123, PETRI_PLACES=48, PETRI_TRANSITIONS=23} [2022-11-23 03:55:37,778 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2022-11-23 03:55:37,778 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 23 transitions, 123 flow [2022-11-23 03:55:37,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 297.75) internal successors, (1191), 4 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:37,778 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:55:37,779 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2022-11-23 03:55:37,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a743aba-ec07-48c1-9e55-e778f29ab19a/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 03:55:37,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a743aba-ec07-48c1-9e55-e778f29ab19a/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-23 03:55:37,984 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-23 03:55:37,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:55:37,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1244696729, now seen corresponding path program 2 times [2022-11-23 03:55:37,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:55:37,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60008809] [2022-11-23 03:55:37,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:55:37,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:55:38,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:55:38,119 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:55:38,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:55:38,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60008809] [2022-11-23 03:55:38,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60008809] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:55:38,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743029459] [2022-11-23 03:55:38,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 03:55:38,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:55:38,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a743aba-ec07-48c1-9e55-e778f29ab19a/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:55:38,121 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a743aba-ec07-48c1-9e55-e778f29ab19a/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:55:38,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a743aba-ec07-48c1-9e55-e778f29ab19a/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 03:55:38,289 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-23 03:55:38,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:55:38,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 03:55:38,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:55:38,307 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 03:55:38,307 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:55:38,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743029459] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:55:38,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 03:55:38,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2022-11-23 03:55:38,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515001728] [2022-11-23 03:55:38,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:55:38,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:55:38,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:55:38,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:55:38,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-23 03:55:38,318 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 745 [2022-11-23 03:55:38,319 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 23 transitions, 123 flow. Second operand has 3 states, 3 states have (on average 297.3333333333333) internal successors, (892), 3 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:38,319 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:55:38,319 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 745 [2022-11-23 03:55:38,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:55:38,524 INFO L130 PetriNetUnfolder]: 421/746 cut-off events. [2022-11-23 03:55:38,524 INFO L131 PetriNetUnfolder]: For 944/1036 co-relation queries the response was YES. [2022-11-23 03:55:38,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2110 conditions, 746 events. 421/746 cut-off events. For 944/1036 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3734 event pairs, 369 based on Foata normal form. 144/886 useless extension candidates. Maximal degree in co-relation 2096. Up to 742 conditions per place. [2022-11-23 03:55:38,528 INFO L137 encePairwiseOnDemand]: 742/745 looper letters, 0 selfloop transitions, 0 changer transitions 21/21 dead transitions. [2022-11-23 03:55:38,528 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 21 transitions, 141 flow [2022-11-23 03:55:38,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:55:38,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:55:38,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 901 transitions. [2022-11-23 03:55:38,531 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40313199105145414 [2022-11-23 03:55:38,531 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 901 transitions. [2022-11-23 03:55:38,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 901 transitions. [2022-11-23 03:55:38,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:55:38,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 901 transitions. [2022-11-23 03:55:38,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 300.3333333333333) internal successors, (901), 3 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:38,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:38,537 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:38,538 INFO L175 Difference]: Start difference. First operand has 48 places, 23 transitions, 123 flow. Second operand 3 states and 901 transitions. [2022-11-23 03:55:38,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 21 transitions, 141 flow [2022-11-23 03:55:38,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 21 transitions, 118 flow, removed 2 selfloop flow, removed 10 redundant places. [2022-11-23 03:55:38,540 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2022-11-23 03:55:38,540 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2022-11-23 03:55:38,540 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -8 predicate places. [2022-11-23 03:55:38,541 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2022-11-23 03:55:38,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 297.3333333333333) internal successors, (892), 3 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:55:38,544 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (57 of 58 remaining) [2022-11-23 03:55:38,544 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (56 of 58 remaining) [2022-11-23 03:55:38,544 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (55 of 58 remaining) [2022-11-23 03:55:38,545 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (54 of 58 remaining) [2022-11-23 03:55:38,545 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (53 of 58 remaining) [2022-11-23 03:55:38,545 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (52 of 58 remaining) [2022-11-23 03:55:38,545 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (51 of 58 remaining) [2022-11-23 03:55:38,545 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (50 of 58 remaining) [2022-11-23 03:55:38,545 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (49 of 58 remaining) [2022-11-23 03:55:38,546 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (48 of 58 remaining) [2022-11-23 03:55:38,546 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (47 of 58 remaining) [2022-11-23 03:55:38,546 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (46 of 58 remaining) [2022-11-23 03:55:38,546 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (45 of 58 remaining) [2022-11-23 03:55:38,546 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (44 of 58 remaining) [2022-11-23 03:55:38,547 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 58 remaining) [2022-11-23 03:55:38,547 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 58 remaining) [2022-11-23 03:55:38,547 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 58 remaining) [2022-11-23 03:55:38,547 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 58 remaining) [2022-11-23 03:55:38,548 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 58 remaining) [2022-11-23 03:55:38,548 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 58 remaining) [2022-11-23 03:55:38,548 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 58 remaining) [2022-11-23 03:55:38,548 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 58 remaining) [2022-11-23 03:55:38,548 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 58 remaining) [2022-11-23 03:55:38,549 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 58 remaining) [2022-11-23 03:55:38,549 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 58 remaining) [2022-11-23 03:55:38,549 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 58 remaining) [2022-11-23 03:55:38,549 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 58 remaining) [2022-11-23 03:55:38,549 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 58 remaining) [2022-11-23 03:55:38,550 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (29 of 58 remaining) [2022-11-23 03:55:38,550 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 58 remaining) [2022-11-23 03:55:38,550 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 58 remaining) [2022-11-23 03:55:38,550 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 58 remaining) [2022-11-23 03:55:38,550 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 58 remaining) [2022-11-23 03:55:38,551 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 58 remaining) [2022-11-23 03:55:38,551 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 58 remaining) [2022-11-23 03:55:38,551 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 58 remaining) [2022-11-23 03:55:38,551 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 58 remaining) [2022-11-23 03:55:38,551 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 58 remaining) [2022-11-23 03:55:38,552 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 58 remaining) [2022-11-23 03:55:38,552 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 58 remaining) [2022-11-23 03:55:38,552 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 58 remaining) [2022-11-23 03:55:38,552 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 58 remaining) [2022-11-23 03:55:38,552 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 58 remaining) [2022-11-23 03:55:38,552 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 58 remaining) [2022-11-23 03:55:38,553 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 58 remaining) [2022-11-23 03:55:38,553 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 58 remaining) [2022-11-23 03:55:38,553 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 58 remaining) [2022-11-23 03:55:38,553 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 58 remaining) [2022-11-23 03:55:38,553 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 58 remaining) [2022-11-23 03:55:38,554 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 58 remaining) [2022-11-23 03:55:38,554 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 58 remaining) [2022-11-23 03:55:38,554 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 58 remaining) [2022-11-23 03:55:38,554 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 58 remaining) [2022-11-23 03:55:38,554 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 58 remaining) [2022-11-23 03:55:38,555 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 58 remaining) [2022-11-23 03:55:38,555 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 58 remaining) [2022-11-23 03:55:38,555 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 58 remaining) [2022-11-23 03:55:38,555 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 58 remaining) [2022-11-23 03:55:38,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a743aba-ec07-48c1-9e55-e778f29ab19a/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 03:55:38,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a743aba-ec07-48c1-9e55-e778f29ab19a/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-23 03:55:38,761 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:55:38,767 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-23 03:55:38,767 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 03:55:38,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:55:38 BasicIcfg [2022-11-23 03:55:38,771 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 03:55:38,772 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 03:55:38,772 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 03:55:38,772 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 03:55:38,772 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:54:50" (3/4) ... [2022-11-23 03:55:38,779 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 03:55:38,785 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-23 03:55:38,786 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-23 03:55:38,792 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-11-23 03:55:38,793 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-23 03:55:38,793 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-23 03:55:38,793 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 03:55:38,836 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a743aba-ec07-48c1-9e55-e778f29ab19a/bin/uautomizer-QkZJyEgLgS/witness.graphml [2022-11-23 03:55:38,836 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 03:55:38,837 INFO L158 Benchmark]: Toolchain (without parser) took 49098.91ms. Allocated memory was 169.9MB in the beginning and 358.6MB in the end (delta: 188.7MB). Free memory was 139.4MB in the beginning and 163.4MB in the end (delta: -24.0MB). Peak memory consumption was 166.8MB. Max. memory is 16.1GB. [2022-11-23 03:55:38,838 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 121.6MB. Free memory is still 63.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 03:55:38,838 INFO L158 Benchmark]: CACSL2BoogieTranslator took 266.15ms. Allocated memory is still 169.9MB. Free memory was 138.6MB in the beginning and 127.3MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-23 03:55:38,838 INFO L158 Benchmark]: Boogie Procedure Inliner took 88.31ms. Allocated memory is still 169.9MB. Free memory was 127.3MB in the beginning and 124.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 03:55:38,839 INFO L158 Benchmark]: Boogie Preprocessor took 57.62ms. Allocated memory is still 169.9MB. Free memory was 124.9MB in the beginning and 123.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 03:55:38,839 INFO L158 Benchmark]: RCFGBuilder took 819.48ms. Allocated memory is still 169.9MB. Free memory was 123.1MB in the beginning and 100.0MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-23 03:55:38,839 INFO L158 Benchmark]: TraceAbstraction took 47792.73ms. Allocated memory was 169.9MB in the beginning and 358.6MB in the end (delta: 188.7MB). Free memory was 99.6MB in the beginning and 166.3MB in the end (delta: -66.7MB). Peak memory consumption was 124.9MB. Max. memory is 16.1GB. [2022-11-23 03:55:38,840 INFO L158 Benchmark]: Witness Printer took 64.97ms. Allocated memory is still 358.6MB. Free memory was 166.3MB in the beginning and 163.4MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 03:55:38,842 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 121.6MB. Free memory is still 63.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 266.15ms. Allocated memory is still 169.9MB. Free memory was 138.6MB in the beginning and 127.3MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 88.31ms. Allocated memory is still 169.9MB. Free memory was 127.3MB in the beginning and 124.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.62ms. Allocated memory is still 169.9MB. Free memory was 124.9MB in the beginning and 123.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 819.48ms. Allocated memory is still 169.9MB. Free memory was 123.1MB in the beginning and 100.0MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 47792.73ms. Allocated memory was 169.9MB in the beginning and 358.6MB in the end (delta: 188.7MB). Free memory was 99.6MB in the beginning and 166.3MB in the end (delta: -66.7MB). Peak memory consumption was 124.9MB. Max. memory is 16.1GB. * Witness Printer took 64.97ms. Allocated memory is still 358.6MB. Free memory was 166.3MB in the beginning and 163.4MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 37.7s, 280 PlacesBefore, 46 PlacesAfterwards, 294 TransitionsBefore, 41 TransitionsAfterwards, 29412 CoEnabledTransitionPairs, 10 FixpointIterations, 55 TrivialSequentialCompositions, 298 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 53 ConcurrentYvCompositions, 19 ChoiceCompositions, 430 TotalNumberOfCompositions, 28814 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 28814, independent: 28814, independent conditional: 0, independent unconditional: 28814, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 20327, independent: 20327, independent conditional: 0, independent unconditional: 20327, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 20327, independent: 20327, independent conditional: 0, independent unconditional: 20327, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 28814, independent: 8487, independent conditional: 0, independent unconditional: 8487, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 20327, unknown conditional: 0, unknown unconditional: 20327] , Statistics on independence cache: Total cache size (in pairs): 71, Positive cache size: 71, Positive conditional cache size: 0, Positive unconditional cache size: 71, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 90]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 90]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 90]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 90]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 54]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 54]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 506 locations, 58 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 47.5s, OverallIterations: 16, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 38.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 590 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 454 mSDsluCounter, 35 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 76 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 842 IncrementalHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 76 mSolverCounterUnsat, 35 mSDtfsCounter, 842 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=154occurred in iteration=14, InterpolantAutomatonStates: 58, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 120 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 277 SizeOfPredicates, 0 NumberOfNonLiveVariables, 528 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 23 InterpolantComputations, 14 PerfectInterpolantSequences, 15/34 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 28 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-23 03:55:38,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a743aba-ec07-48c1-9e55-e778f29ab19a/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE