./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2b25ea-087c-4a62-a449-840764566647/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2b25ea-087c-4a62-a449-840764566647/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2b25ea-087c-4a62-a449-840764566647/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2b25ea-087c-4a62-a449-840764566647/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2b25ea-087c-4a62-a449-840764566647/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2b25ea-087c-4a62-a449-840764566647/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3f188168fffbbf8c03071990a7bb806f47bcfd599d52fd9001ab6073a6b782e8 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:06:33,181 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:06:33,183 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:06:33,207 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:06:33,208 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:06:33,209 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:06:33,211 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:06:33,213 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:06:33,215 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:06:33,216 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:06:33,217 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:06:33,218 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:06:33,219 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:06:33,220 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:06:33,222 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:06:33,223 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:06:33,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:06:33,225 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:06:33,227 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:06:33,229 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:06:33,231 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:06:33,232 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:06:33,234 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:06:33,235 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:06:33,239 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:06:33,239 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:06:33,240 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:06:33,241 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:06:33,241 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:06:33,242 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:06:33,243 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:06:33,244 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:06:33,245 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:06:33,246 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:06:33,247 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:06:33,247 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:06:33,248 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:06:33,249 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:06:33,249 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:06:33,250 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:06:33,251 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:06:33,255 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2b25ea-087c-4a62-a449-840764566647/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 12:06:33,293 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:06:33,295 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:06:33,296 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:06:33,296 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:06:33,297 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:06:33,298 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:06:33,298 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:06:33,299 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:06:33,299 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:06:33,299 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:06:33,300 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:06:33,300 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:06:33,301 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:06:33,301 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:06:33,301 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:06:33,301 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:06:33,301 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:06:33,302 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:06:33,302 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 12:06:33,302 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:06:33,302 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:06:33,302 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:06:33,303 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:06:33,303 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:06:33,303 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:06:33,303 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:06:33,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:06:33,304 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:06:33,304 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:06:33,304 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:06:33,306 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:06:33,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:06:33,306 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:06:33,307 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:06:33,307 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:06:33,307 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2b25ea-087c-4a62-a449-840764566647/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2b25ea-087c-4a62-a449-840764566647/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f188168fffbbf8c03071990a7bb806f47bcfd599d52fd9001ab6073a6b782e8 [2022-11-16 12:06:33,567 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:06:33,588 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:06:33,591 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:06:33,592 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:06:33,593 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:06:33,594 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2b25ea-087c-4a62-a449-840764566647/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2022-11-16 12:06:33,660 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2b25ea-087c-4a62-a449-840764566647/bin/uautomizer-tPACEb0tL8/data/ecec4cc4e/03aae4a7468a4d6b819a56c6fc239408/FLAG04811c326 [2022-11-16 12:06:34,219 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:06:34,220 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2b25ea-087c-4a62-a449-840764566647/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2022-11-16 12:06:34,227 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2b25ea-087c-4a62-a449-840764566647/bin/uautomizer-tPACEb0tL8/data/ecec4cc4e/03aae4a7468a4d6b819a56c6fc239408/FLAG04811c326 [2022-11-16 12:06:34,578 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2b25ea-087c-4a62-a449-840764566647/bin/uautomizer-tPACEb0tL8/data/ecec4cc4e/03aae4a7468a4d6b819a56c6fc239408 [2022-11-16 12:06:34,581 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:06:34,582 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:06:34,584 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:06:34,590 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:06:34,593 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:06:34,594 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:06:34" (1/1) ... [2022-11-16 12:06:34,595 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dab92b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:34, skipping insertion in model container [2022-11-16 12:06:34,595 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:06:34" (1/1) ... [2022-11-16 12:06:34,607 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:06:34,636 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:06:34,891 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2b25ea-087c-4a62-a449-840764566647/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c[2728,2741] [2022-11-16 12:06:34,905 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:06:34,914 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:06:34,939 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2b25ea-087c-4a62-a449-840764566647/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c[2728,2741] [2022-11-16 12:06:34,944 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:06:34,958 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:06:34,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:34 WrapperNode [2022-11-16 12:06:34,959 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:06:34,960 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:06:34,960 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:06:34,960 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:06:34,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:34" (1/1) ... [2022-11-16 12:06:34,977 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:34" (1/1) ... [2022-11-16 12:06:35,012 INFO L138 Inliner]: procedures = 26, calls = 49, calls flagged for inlining = 13, calls inlined = 21, statements flattened = 337 [2022-11-16 12:06:35,012 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:06:35,013 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:06:35,013 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:06:35,013 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:06:35,022 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:34" (1/1) ... [2022-11-16 12:06:35,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:34" (1/1) ... [2022-11-16 12:06:35,027 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:34" (1/1) ... [2022-11-16 12:06:35,028 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:34" (1/1) ... [2022-11-16 12:06:35,038 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:34" (1/1) ... [2022-11-16 12:06:35,043 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:34" (1/1) ... [2022-11-16 12:06:35,045 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:34" (1/1) ... [2022-11-16 12:06:35,047 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:34" (1/1) ... [2022-11-16 12:06:35,051 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:06:35,052 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:06:35,052 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:06:35,052 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:06:35,055 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:34" (1/1) ... [2022-11-16 12:06:35,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:06:35,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2b25ea-087c-4a62-a449-840764566647/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:06:35,100 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2b25ea-087c-4a62-a449-840764566647/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:06:35,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2b25ea-087c-4a62-a449-840764566647/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:06:35,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:06:35,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:06:35,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:06:35,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:06:35,138 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 12:06:35,138 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 12:06:35,138 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 12:06:35,138 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 12:06:35,139 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 12:06:35,139 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 12:06:35,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:06:35,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:06:35,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:06:35,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:06:35,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:06:35,141 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:06:35,259 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:06:35,261 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:06:35,959 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:06:35,985 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:06:35,985 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-16 12:06:35,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:06:35 BoogieIcfgContainer [2022-11-16 12:06:35,988 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:06:36,003 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:06:36,004 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:06:36,007 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:06:36,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:06:34" (1/3) ... [2022-11-16 12:06:36,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a353473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:06:36, skipping insertion in model container [2022-11-16 12:06:36,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:34" (2/3) ... [2022-11-16 12:06:36,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a353473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:06:36, skipping insertion in model container [2022-11-16 12:06:36,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:06:35" (3/3) ... [2022-11-16 12:06:36,011 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-trans.wvr.c [2022-11-16 12:06:36,021 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:06:36,032 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:06:36,032 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2022-11-16 12:06:36,033 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:06:36,243 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 12:06:36,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 427 places, 451 transitions, 926 flow [2022-11-16 12:06:36,595 INFO L130 PetriNetUnfolder]: 34/448 cut-off events. [2022-11-16 12:06:36,596 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 12:06:36,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 461 conditions, 448 events. 34/448 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1063 event pairs, 0 based on Foata normal form. 0/378 useless extension candidates. Maximal degree in co-relation 341. Up to 3 conditions per place. [2022-11-16 12:06:36,614 INFO L82 GeneralOperation]: Start removeDead. Operand has 427 places, 451 transitions, 926 flow [2022-11-16 12:06:36,634 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 404 places, 427 transitions, 869 flow [2022-11-16 12:06:36,645 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:06:36,652 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;@50d2b317, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:06:36,653 INFO L358 AbstractCegarLoop]: Starting to check reachability of 69 error locations. [2022-11-16 12:06:36,675 INFO L130 PetriNetUnfolder]: 3/70 cut-off events. [2022-11-16 12:06:36,675 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:06:36,675 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:06:36,676 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:36,677 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2022-11-16 12:06:36,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:36,683 INFO L85 PathProgramCache]: Analyzing trace with hash -52091357, now seen corresponding path program 1 times [2022-11-16 12:06:36,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:36,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317609959] [2022-11-16 12:06:36,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:36,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:36,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:37,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:06:37,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:37,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317609959] [2022-11-16 12:06:37,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317609959] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:37,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:06:37,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:06:37,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486693143] [2022-11-16 12:06:37,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:37,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:06:37,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:37,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:06:37,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:06:37,321 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 451 [2022-11-16 12:06:37,330 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 427 transitions, 869 flow. Second operand has 4 states, 4 states have (on average 390.5) internal successors, (1562), 4 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:37,330 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:06:37,330 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 451 [2022-11-16 12:06:37,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:06:37,754 INFO L130 PetriNetUnfolder]: 29/718 cut-off events. [2022-11-16 12:06:37,755 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-16 12:06:37,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 811 conditions, 718 events. 29/718 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2907 event pairs, 0 based on Foata normal form. 36/640 useless extension candidates. Maximal degree in co-relation 618. Up to 44 conditions per place. [2022-11-16 12:06:37,770 INFO L137 encePairwiseOnDemand]: 413/451 looper letters, 58 selfloop transitions, 14 changer transitions 6/440 dead transitions. [2022-11-16 12:06:37,770 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 440 transitions, 1054 flow [2022-11-16 12:06:37,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:06:37,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:06:37,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2053 transitions. [2022-11-16 12:06:37,799 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9104212860310421 [2022-11-16 12:06:37,801 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2053 transitions. [2022-11-16 12:06:37,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2053 transitions. [2022-11-16 12:06:37,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:06:37,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2053 transitions. [2022-11-16 12:06:37,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 410.6) internal successors, (2053), 5 states have internal predecessors, (2053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:37,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 451.0) internal successors, (2706), 6 states have internal predecessors, (2706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:37,833 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 451.0) internal successors, (2706), 6 states have internal predecessors, (2706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:37,835 INFO L175 Difference]: Start difference. First operand has 404 places, 427 transitions, 869 flow. Second operand 5 states and 2053 transitions. [2022-11-16 12:06:37,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 440 transitions, 1054 flow [2022-11-16 12:06:37,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 440 transitions, 1036 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:06:37,860 INFO L231 Difference]: Finished difference. Result has 406 places, 414 transitions, 916 flow [2022-11-16 12:06:37,862 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=451, PETRI_DIFFERENCE_MINUEND_FLOW=824, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=916, PETRI_PLACES=406, PETRI_TRANSITIONS=414} [2022-11-16 12:06:37,868 INFO L288 CegarLoopForPetriNet]: 404 programPoint places, 2 predicate places. [2022-11-16 12:06:37,869 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 414 transitions, 916 flow [2022-11-16 12:06:37,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 390.5) internal successors, (1562), 4 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:37,870 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:06:37,871 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:37,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:06:37,872 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2022-11-16 12:06:37,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:37,874 INFO L85 PathProgramCache]: Analyzing trace with hash 13416447, now seen corresponding path program 1 times [2022-11-16 12:06:37,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:37,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565162288] [2022-11-16 12:06:37,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:37,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:37,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:38,150 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:06:38,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:38,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565162288] [2022-11-16 12:06:38,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565162288] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:06:38,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416521294] [2022-11-16 12:06:38,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:38,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:38,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2b25ea-087c-4a62-a449-840764566647/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:06:38,162 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2b25ea-087c-4a62-a449-840764566647/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:06:38,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2b25ea-087c-4a62-a449-840764566647/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:06:38,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:38,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:06:38,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:06:38,429 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:06:38,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:06:38,502 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:06:38,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416521294] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:06:38,503 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:06:38,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 12:06:38,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509381967] [2022-11-16 12:06:38,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:06:38,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:06:38,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:38,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:06:38,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:06:38,513 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 451 [2022-11-16 12:06:38,518 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 414 transitions, 916 flow. Second operand has 12 states, 12 states have (on average 391.6666666666667) internal successors, (4700), 12 states have internal predecessors, (4700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:38,519 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:06:38,519 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 451 [2022-11-16 12:06:38,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:06:39,419 INFO L130 PetriNetUnfolder]: 71/1645 cut-off events. [2022-11-16 12:06:39,419 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-11-16 12:06:39,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1923 conditions, 1645 events. 71/1645 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 10183 event pairs, 0 based on Foata normal form. 9/1399 useless extension candidates. Maximal degree in co-relation 1176. Up to 35 conditions per place. [2022-11-16 12:06:39,453 INFO L137 encePairwiseOnDemand]: 428/451 looper letters, 109 selfloop transitions, 62 changer transitions 0/533 dead transitions. [2022-11-16 12:06:39,453 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 533 transitions, 1598 flow [2022-11-16 12:06:39,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:06:39,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 12:06:39,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 7182 transitions. [2022-11-16 12:06:39,466 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.88470066518847 [2022-11-16 12:06:39,467 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 7182 transitions. [2022-11-16 12:06:39,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 7182 transitions. [2022-11-16 12:06:39,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:06:39,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 7182 transitions. [2022-11-16 12:06:39,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 399.0) internal successors, (7182), 18 states have internal predecessors, (7182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:39,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 451.0) internal successors, (8569), 19 states have internal predecessors, (8569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:39,509 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 451.0) internal successors, (8569), 19 states have internal predecessors, (8569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:39,509 INFO L175 Difference]: Start difference. First operand has 406 places, 414 transitions, 916 flow. Second operand 18 states and 7182 transitions. [2022-11-16 12:06:39,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 533 transitions, 1598 flow [2022-11-16 12:06:39,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 533 transitions, 1590 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:06:39,521 INFO L231 Difference]: Finished difference. Result has 420 places, 456 transitions, 1278 flow [2022-11-16 12:06:39,522 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=451, PETRI_DIFFERENCE_MINUEND_FLOW=908, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1278, PETRI_PLACES=420, PETRI_TRANSITIONS=456} [2022-11-16 12:06:39,523 INFO L288 CegarLoopForPetriNet]: 404 programPoint places, 16 predicate places. [2022-11-16 12:06:39,523 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 456 transitions, 1278 flow [2022-11-16 12:06:39,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 391.6666666666667) internal successors, (4700), 12 states have internal predecessors, (4700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:39,526 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:06:39,527 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:39,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2b25ea-087c-4a62-a449-840764566647/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:06:39,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2b25ea-087c-4a62-a449-840764566647/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:39,733 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2022-11-16 12:06:39,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:39,734 INFO L85 PathProgramCache]: Analyzing trace with hash 415910724, now seen corresponding path program 1 times [2022-11-16 12:06:39,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:39,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992284661] [2022-11-16 12:06:39,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:39,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:39,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:39,943 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:06:39,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:39,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992284661] [2022-11-16 12:06:39,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992284661] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:06:39,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897827984] [2022-11-16 12:06:39,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:39,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:39,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2b25ea-087c-4a62-a449-840764566647/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:06:39,947 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2b25ea-087c-4a62-a449-840764566647/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:06:39,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2b25ea-087c-4a62-a449-840764566647/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:06:40,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:40,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:06:40,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:06:40,140 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:06:40,141 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:06:40,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897827984] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:40,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:06:40,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 12:06:40,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759956423] [2022-11-16 12:06:40,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:40,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:06:40,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:40,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:06:40,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:06:40,151 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 451 [2022-11-16 12:06:40,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 456 transitions, 1278 flow. Second operand has 6 states, 6 states have (on average 391.3333333333333) internal successors, (2348), 6 states have internal predecessors, (2348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:40,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:06:40,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 451 [2022-11-16 12:06:40,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:06:40,790 INFO L130 PetriNetUnfolder]: 71/1633 cut-off events. [2022-11-16 12:06:40,790 INFO L131 PetriNetUnfolder]: For 205/205 co-relation queries the response was YES. [2022-11-16 12:06:40,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1979 conditions, 1633 events. 71/1633 cut-off events. For 205/205 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 10130 event pairs, 0 based on Foata normal form. 12/1390 useless extension candidates. Maximal degree in co-relation 1538. Up to 68 conditions per place. [2022-11-16 12:06:40,829 INFO L137 encePairwiseOnDemand]: 434/451 looper letters, 59 selfloop transitions, 43 changer transitions 0/464 dead transitions. [2022-11-16 12:06:40,829 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 464 transitions, 1453 flow [2022-11-16 12:06:40,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:06:40,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:06:40,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2795 transitions. [2022-11-16 12:06:40,835 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8853341780171049 [2022-11-16 12:06:40,835 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2795 transitions. [2022-11-16 12:06:40,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2795 transitions. [2022-11-16 12:06:40,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:06:40,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2795 transitions. [2022-11-16 12:06:40,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 399.2857142857143) internal successors, (2795), 7 states have internal predecessors, (2795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:40,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 451.0) internal successors, (3608), 8 states have internal predecessors, (3608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:40,852 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 451.0) internal successors, (3608), 8 states have internal predecessors, (3608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:40,852 INFO L175 Difference]: Start difference. First operand has 420 places, 456 transitions, 1278 flow. Second operand 7 states and 2795 transitions. [2022-11-16 12:06:40,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 464 transitions, 1453 flow [2022-11-16 12:06:40,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 464 transitions, 1337 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-11-16 12:06:40,869 INFO L231 Difference]: Finished difference. Result has 414 places, 444 transitions, 1167 flow [2022-11-16 12:06:40,869 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=451, PETRI_DIFFERENCE_MINUEND_FLOW=1081, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1167, PETRI_PLACES=414, PETRI_TRANSITIONS=444} [2022-11-16 12:06:40,872 INFO L288 CegarLoopForPetriNet]: 404 programPoint places, 10 predicate places. [2022-11-16 12:06:40,872 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 444 transitions, 1167 flow [2022-11-16 12:06:40,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 391.3333333333333) internal successors, (2348), 6 states have internal predecessors, (2348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:40,874 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:06:40,874 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:40,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2b25ea-087c-4a62-a449-840764566647/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:06:41,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2b25ea-087c-4a62-a449-840764566647/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:41,080 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2022-11-16 12:06:41,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:41,080 INFO L85 PathProgramCache]: Analyzing trace with hash -848366301, now seen corresponding path program 2 times [2022-11-16 12:06:41,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:41,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892627428] [2022-11-16 12:06:41,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:41,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:41,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:41,358 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:06:41,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:41,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892627428] [2022-11-16 12:06:41,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892627428] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:06:41,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83893100] [2022-11-16 12:06:41,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:06:41,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:41,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2b25ea-087c-4a62-a449-840764566647/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:06:41,361 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2b25ea-087c-4a62-a449-840764566647/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:06:41,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2b25ea-087c-4a62-a449-840764566647/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:06:41,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:06:41,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:06:41,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:06:41,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:06:41,685 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 12:06:41,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:06:41,882 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 12:06:41,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83893100] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:06:41,882 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:06:41,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-16 12:06:41,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945133698] [2022-11-16 12:06:41,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:06:41,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:06:41,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:41,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:06:41,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:06:41,892 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 355 out of 451 [2022-11-16 12:06:41,907 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 444 transitions, 1167 flow. Second operand has 18 states, 18 states have (on average 358.6111111111111) internal successors, (6455), 18 states have internal predecessors, (6455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:41,907 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:06:41,907 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 355 of 451 [2022-11-16 12:06:41,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:06:46,298 INFO L130 PetriNetUnfolder]: 1002/9656 cut-off events. [2022-11-16 12:06:46,299 INFO L131 PetriNetUnfolder]: For 343/343 co-relation queries the response was YES. [2022-11-16 12:06:46,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11446 conditions, 9656 events. 1002/9656 cut-off events. For 343/343 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 105793 event pairs, 539 based on Foata normal form. 6/7616 useless extension candidates. Maximal degree in co-relation 9258. Up to 211 conditions per place. [2022-11-16 12:06:46,544 INFO L137 encePairwiseOnDemand]: 423/451 looper letters, 248 selfloop transitions, 97 changer transitions 0/673 dead transitions. [2022-11-16 12:06:46,544 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 673 transitions, 2452 flow [2022-11-16 12:06:46,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-16 12:06:46,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-16 12:06:46,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 17746 transitions. [2022-11-16 12:06:46,578 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8030227612109145 [2022-11-16 12:06:46,578 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 17746 transitions. [2022-11-16 12:06:46,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 17746 transitions. [2022-11-16 12:06:46,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:06:46,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 17746 transitions. [2022-11-16 12:06:46,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 362.16326530612247) internal successors, (17746), 49 states have internal predecessors, (17746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:46,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 451.0) internal successors, (22550), 50 states have internal predecessors, (22550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:46,664 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 451.0) internal successors, (22550), 50 states have internal predecessors, (22550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:46,665 INFO L175 Difference]: Start difference. First operand has 414 places, 444 transitions, 1167 flow. Second operand 49 states and 17746 transitions. [2022-11-16 12:06:46,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 673 transitions, 2452 flow [2022-11-16 12:06:46,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 673 transitions, 2383 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:06:46,679 INFO L231 Difference]: Finished difference. Result has 460 places, 484 transitions, 1510 flow [2022-11-16 12:06:46,680 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=451, PETRI_DIFFERENCE_MINUEND_FLOW=1103, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=1510, PETRI_PLACES=460, PETRI_TRANSITIONS=484} [2022-11-16 12:06:46,681 INFO L288 CegarLoopForPetriNet]: 404 programPoint places, 56 predicate places. [2022-11-16 12:06:46,682 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 484 transitions, 1510 flow [2022-11-16 12:06:46,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 358.6111111111111) internal successors, (6455), 18 states have internal predecessors, (6455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:46,684 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:06:46,684 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:46,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2b25ea-087c-4a62-a449-840764566647/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:06:46,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2b25ea-087c-4a62-a449-840764566647/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:46,897 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2022-11-16 12:06:46,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:46,897 INFO L85 PathProgramCache]: Analyzing trace with hash -2076104386, now seen corresponding path program 1 times [2022-11-16 12:06:46,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:46,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694659769] [2022-11-16 12:06:46,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:46,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:46,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:47,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:06:47,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:47,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694659769] [2022-11-16 12:06:47,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694659769] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:47,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:06:47,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:06:47,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203919113] [2022-11-16 12:06:47,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:47,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 12:06:47,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:47,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 12:06:47,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:06:47,345 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 451 [2022-11-16 12:06:47,349 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 484 transitions, 1510 flow. Second operand has 11 states, 11 states have (on average 339.3636363636364) internal successors, (3733), 11 states have internal predecessors, (3733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:47,349 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:06:47,349 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 451 [2022-11-16 12:06:47,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:08,322 INFO L130 PetriNetUnfolder]: 19888/123426 cut-off events. [2022-11-16 12:07:08,322 INFO L131 PetriNetUnfolder]: For 1751/1751 co-relation queries the response was YES. [2022-11-16 12:07:09,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148738 conditions, 123426 events. 19888/123426 cut-off events. For 1751/1751 co-relation queries the response was YES. Maximal size of possible extension queue 1951. Compared 2061001 event pairs, 13202 based on Foata normal form. 0/95594 useless extension candidates. Maximal degree in co-relation 127459. Up to 10797 conditions per place. [2022-11-16 12:07:09,829 INFO L137 encePairwiseOnDemand]: 433/451 looper letters, 234 selfloop transitions, 35 changer transitions 0/604 dead transitions. [2022-11-16 12:07:09,829 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 604 transitions, 2531 flow [2022-11-16 12:07:09,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 12:07:09,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-16 12:07:09,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 5862 transitions. [2022-11-16 12:07:09,840 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7645754532411634 [2022-11-16 12:07:09,840 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 5862 transitions. [2022-11-16 12:07:09,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 5862 transitions. [2022-11-16 12:07:09,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:09,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 5862 transitions. [2022-11-16 12:07:09,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 344.8235294117647) internal successors, (5862), 17 states have internal predecessors, (5862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:09,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 451.0) internal successors, (8118), 18 states have internal predecessors, (8118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:09,874 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 451.0) internal successors, (8118), 18 states have internal predecessors, (8118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:09,874 INFO L175 Difference]: Start difference. First operand has 460 places, 484 transitions, 1510 flow. Second operand 17 states and 5862 transitions. [2022-11-16 12:07:09,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 604 transitions, 2531 flow [2022-11-16 12:07:09,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 604 transitions, 2350 flow, removed 27 selfloop flow, removed 15 redundant places. [2022-11-16 12:07:09,889 INFO L231 Difference]: Finished difference. Result has 470 places, 498 transitions, 1589 flow [2022-11-16 12:07:09,890 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=451, PETRI_DIFFERENCE_MINUEND_FLOW=1387, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1589, PETRI_PLACES=470, PETRI_TRANSITIONS=498} [2022-11-16 12:07:09,893 INFO L288 CegarLoopForPetriNet]: 404 programPoint places, 66 predicate places. [2022-11-16 12:07:09,894 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 498 transitions, 1589 flow [2022-11-16 12:07:09,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 339.3636363636364) internal successors, (3733), 11 states have internal predecessors, (3733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:09,895 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:09,895 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:09,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:07:09,896 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2022-11-16 12:07:09,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:09,896 INFO L85 PathProgramCache]: Analyzing trace with hash 65274551, now seen corresponding path program 1 times [2022-11-16 12:07:09,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:09,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176031814] [2022-11-16 12:07:09,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:09,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:09,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:10,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:10,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:10,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176031814] [2022-11-16 12:07:10,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176031814] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:10,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:10,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:07:10,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821523273] [2022-11-16 12:07:10,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:10,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:07:10,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:10,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:07:10,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:07:10,130 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 361 out of 451 [2022-11-16 12:07:10,133 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 498 transitions, 1589 flow. Second operand has 8 states, 8 states have (on average 365.25) internal successors, (2922), 8 states have internal predecessors, (2922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:10,133 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:10,133 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 361 of 451 [2022-11-16 12:07:10,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand