./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/fib_safe-7.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b 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_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/fib_safe-7.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2a12d5b905fa07b94a851888f481630fccc5d15913fb6b7efa54c908526d1783 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:39:14,063 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:39:14,065 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:39:14,106 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:39:14,106 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:39:14,110 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:39:14,112 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:39:14,115 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:39:14,120 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:39:14,125 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:39:14,127 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:39:14,129 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:39:14,130 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:39:14,132 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:39:14,134 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:39:14,136 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:39:14,138 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:39:14,139 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:39:14,140 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:39:14,146 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:39:14,148 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:39:14,151 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:39:14,152 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:39:14,153 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:39:14,161 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:39:14,163 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:39:14,164 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:39:14,165 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:39:14,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:39:14,168 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:39:14,169 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:39:14,170 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:39:14,172 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:39:14,172 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:39:14,174 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:39:14,174 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:39:14,175 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:39:14,175 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:39:14,176 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:39:14,177 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:39:14,177 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:39:14,178 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 12:39:14,215 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:39:14,219 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:39:14,220 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:39:14,220 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:39:14,221 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:39:14,222 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:39:14,222 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:39:14,223 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:39:14,223 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:39:14,223 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:39:14,224 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:39:14,225 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:39:14,225 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:39:14,225 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:39:14,225 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:39:14,226 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:39:14,226 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:39:14,226 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:39:14,226 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 12:39:14,226 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:39:14,227 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:39:14,227 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:39:14,227 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:39:14,227 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:39:14,227 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:39:14,228 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:39:14,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:39:14,229 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:39:14,229 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:39:14,229 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:39:14,230 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:39:14,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:39:14,230 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:39:14,230 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:39:14,231 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:39:14,231 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_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a12d5b905fa07b94a851888f481630fccc5d15913fb6b7efa54c908526d1783 [2022-11-20 12:39:14,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:39:14,597 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:39:14,600 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:39:14,601 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:39:14,601 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:39:14,603 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/pthread/fib_safe-7.i [2022-11-20 12:39:17,719 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:39:18,007 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:39:18,007 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/sv-benchmarks/c/pthread/fib_safe-7.i [2022-11-20 12:39:18,022 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/data/38965725d/15ad8d3305144fa29b5c464004d88f92/FLAG88e17420a [2022-11-20 12:39:18,035 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/data/38965725d/15ad8d3305144fa29b5c464004d88f92 [2022-11-20 12:39:18,038 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:39:18,039 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:39:18,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:39:18,041 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:39:18,045 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:39:18,046 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:39:18" (1/1) ... [2022-11-20 12:39:18,047 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2342652f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:39:18, skipping insertion in model container [2022-11-20 12:39:18,047 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:39:18" (1/1) ... [2022-11-20 12:39:18,055 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:39:18,086 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:39:18,498 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_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/sv-benchmarks/c/pthread/fib_safe-7.i[30241,30254] [2022-11-20 12:39:18,528 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:39:18,541 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:39:18,593 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_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/sv-benchmarks/c/pthread/fib_safe-7.i[30241,30254] [2022-11-20 12:39:18,601 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:39:18,629 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:39:18,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:39:18 WrapperNode [2022-11-20 12:39:18,630 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:39:18,631 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:39:18,631 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:39:18,632 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:39:18,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:39:18" (1/1) ... [2022-11-20 12:39:18,660 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:39:18" (1/1) ... [2022-11-20 12:39:18,689 INFO L138 Inliner]: procedures = 165, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 80 [2022-11-20 12:39:18,690 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:39:18,690 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:39:18,691 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:39:18,691 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:39:18,700 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:39:18" (1/1) ... [2022-11-20 12:39:18,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:39:18" (1/1) ... [2022-11-20 12:39:18,711 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:39:18" (1/1) ... [2022-11-20 12:39:18,711 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:39:18" (1/1) ... [2022-11-20 12:39:18,722 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:39:18" (1/1) ... [2022-11-20 12:39:18,731 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:39:18" (1/1) ... [2022-11-20 12:39:18,734 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:39:18" (1/1) ... [2022-11-20 12:39:18,739 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:39:18" (1/1) ... [2022-11-20 12:39:18,742 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:39:18,742 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:39:18,743 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:39:18,743 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:39:18,743 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:39:18" (1/1) ... [2022-11-20 12:39:18,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:39:18,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:39:18,781 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:39:18,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:39:18,827 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-20 12:39:18,827 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-20 12:39:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-20 12:39:18,828 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-20 12:39:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:39:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 12:39:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:39:18,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:39:18,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:39:18,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:39:18,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 12:39:18,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:39:18,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:39:18,831 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 12:39:19,031 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:39:19,033 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:39:19,281 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:39:19,310 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:39:19,310 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-20 12:39:19,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:39:19 BoogieIcfgContainer [2022-11-20 12:39:19,313 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:39:19,316 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:39:19,316 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:39:19,320 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:39:19,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:39:18" (1/3) ... [2022-11-20 12:39:19,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5902db44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:39:19, skipping insertion in model container [2022-11-20 12:39:19,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:39:18" (2/3) ... [2022-11-20 12:39:19,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5902db44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:39:19, skipping insertion in model container [2022-11-20 12:39:19,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:39:19" (3/3) ... [2022-11-20 12:39:19,324 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_safe-7.i [2022-11-20 12:39:19,341 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 12:39:19,355 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:39:19,355 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-20 12:39:19,355 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:39:19,469 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 12:39:19,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 120 transitions, 250 flow [2022-11-20 12:39:19,567 INFO L130 PetriNetUnfolder]: 7/118 cut-off events. [2022-11-20 12:39:19,568 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:39:19,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 118 events. 7/118 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 137 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2022-11-20 12:39:19,575 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 120 transitions, 250 flow [2022-11-20 12:39:19,580 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 118 transitions, 242 flow [2022-11-20 12:39:19,591 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:39:19,598 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;@18b8a734, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:39:19,598 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-20 12:39:19,612 INFO L130 PetriNetUnfolder]: 1/40 cut-off events. [2022-11-20 12:39:19,612 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:39:19,613 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:39:19,614 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] [2022-11-20 12:39:19,614 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 12:39:19,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:39:19,620 INFO L85 PathProgramCache]: Analyzing trace with hash 112959114, now seen corresponding path program 1 times [2022-11-20 12:39:19,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:39:19,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639763277] [2022-11-20 12:39:19,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:39:19,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:39:19,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:39:20,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:39:20,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:39:20,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639763277] [2022-11-20 12:39:20,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639763277] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:39:20,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:39:20,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:39:20,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647879323] [2022-11-20 12:39:20,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:39:20,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:39:20,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:39:20,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:39:20,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:39:20,107 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 120 [2022-11-20 12:39:20,111 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 118 transitions, 242 flow. Second operand has 4 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:20,111 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:39:20,112 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 120 [2022-11-20 12:39:20,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:39:20,327 INFO L130 PetriNetUnfolder]: 81/446 cut-off events. [2022-11-20 12:39:20,327 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-20 12:39:20,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 586 conditions, 446 events. 81/446 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2407 event pairs, 33 based on Foata normal form. 57/372 useless extension candidates. Maximal degree in co-relation 544. Up to 81 conditions per place. [2022-11-20 12:39:20,335 INFO L137 encePairwiseOnDemand]: 108/120 looper letters, 19 selfloop transitions, 5 changer transitions 0/124 dead transitions. [2022-11-20 12:39:20,335 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 124 transitions, 305 flow [2022-11-20 12:39:20,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:39:20,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:39:20,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 448 transitions. [2022-11-20 12:39:20,351 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2022-11-20 12:39:20,352 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 448 transitions. [2022-11-20 12:39:20,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 448 transitions. [2022-11-20 12:39:20,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:39:20,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 448 transitions. [2022-11-20 12:39:20,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:20,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:20,369 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:20,371 INFO L175 Difference]: Start difference. First operand has 118 places, 118 transitions, 242 flow. Second operand 4 states and 448 transitions. [2022-11-20 12:39:20,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 124 transitions, 305 flow [2022-11-20 12:39:20,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 124 transitions, 302 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:39:20,379 INFO L231 Difference]: Finished difference. Result has 119 places, 116 transitions, 261 flow [2022-11-20 12:39:20,381 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=261, PETRI_PLACES=119, PETRI_TRANSITIONS=116} [2022-11-20 12:39:20,385 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 1 predicate places. [2022-11-20 12:39:20,385 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 116 transitions, 261 flow [2022-11-20 12:39:20,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:20,386 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:39:20,386 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] [2022-11-20 12:39:20,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:39:20,387 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 12:39:20,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:39:20,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1179537421, now seen corresponding path program 1 times [2022-11-20 12:39:20,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:39:20,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138543311] [2022-11-20 12:39:20,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:39:20,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:39:20,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:39:20,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:39:20,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:39:20,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138543311] [2022-11-20 12:39:20,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138543311] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:39:20,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:39:20,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:39:20,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073795463] [2022-11-20 12:39:20,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:39:20,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:39:20,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:39:20,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:39:20,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:39:20,548 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 120 [2022-11-20 12:39:20,549 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 116 transitions, 261 flow. Second operand has 4 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:20,549 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:39:20,550 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 120 [2022-11-20 12:39:20,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:39:20,680 INFO L130 PetriNetUnfolder]: 109/314 cut-off events. [2022-11-20 12:39:20,680 INFO L131 PetriNetUnfolder]: For 40/59 co-relation queries the response was YES. [2022-11-20 12:39:20,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 661 conditions, 314 events. 109/314 cut-off events. For 40/59 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1518 event pairs, 13 based on Foata normal form. 0/233 useless extension candidates. Maximal degree in co-relation 620. Up to 109 conditions per place. [2022-11-20 12:39:20,690 INFO L137 encePairwiseOnDemand]: 113/120 looper letters, 32 selfloop transitions, 4 changer transitions 0/132 dead transitions. [2022-11-20 12:39:20,690 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 132 transitions, 385 flow [2022-11-20 12:39:20,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:39:20,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:39:20,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 527 transitions. [2022-11-20 12:39:20,694 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8783333333333333 [2022-11-20 12:39:20,694 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 527 transitions. [2022-11-20 12:39:20,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 527 transitions. [2022-11-20 12:39:20,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:39:20,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 527 transitions. [2022-11-20 12:39:20,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 105.4) internal successors, (527), 5 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:20,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:20,700 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:20,701 INFO L175 Difference]: Start difference. First operand has 119 places, 116 transitions, 261 flow. Second operand 5 states and 527 transitions. [2022-11-20 12:39:20,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 132 transitions, 385 flow [2022-11-20 12:39:20,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 132 transitions, 385 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:39:20,705 INFO L231 Difference]: Finished difference. Result has 126 places, 119 transitions, 293 flow [2022-11-20 12:39:20,705 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=293, PETRI_PLACES=126, PETRI_TRANSITIONS=119} [2022-11-20 12:39:20,708 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 8 predicate places. [2022-11-20 12:39:20,709 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 119 transitions, 293 flow [2022-11-20 12:39:20,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:20,710 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:39:20,711 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-20 12:39:20,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:39:20,711 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 12:39:20,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:39:20,714 INFO L85 PathProgramCache]: Analyzing trace with hash 652098173, now seen corresponding path program 1 times [2022-11-20 12:39:20,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:39:20,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32823460] [2022-11-20 12:39:20,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:39:20,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:39:20,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:39:20,865 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:39:20,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:39:20,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32823460] [2022-11-20 12:39:20,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32823460] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:39:20,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738448373] [2022-11-20 12:39:20,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:39:20,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:39:20,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:39:20,871 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:39:20,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:39:21,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:39:21,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:39:21,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:39:21,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:39:21,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:39:21,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:39:21,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738448373] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:39:21,353 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:39:21,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2022-11-20 12:39:21,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694973850] [2022-11-20 12:39:21,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:39:21,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 12:39:21,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:39:21,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 12:39:21,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:39:21,362 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 120 [2022-11-20 12:39:21,364 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 119 transitions, 293 flow. Second operand has 11 states, 11 states have (on average 103.54545454545455) internal successors, (1139), 11 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:21,365 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:39:21,365 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 120 [2022-11-20 12:39:21,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:39:21,988 INFO L130 PetriNetUnfolder]: 235/1253 cut-off events. [2022-11-20 12:39:21,988 INFO L131 PetriNetUnfolder]: For 156/169 co-relation queries the response was YES. [2022-11-20 12:39:21,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2121 conditions, 1253 events. 235/1253 cut-off events. For 156/169 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 9649 event pairs, 23 based on Foata normal form. 0/1019 useless extension candidates. Maximal degree in co-relation 2072. Up to 245 conditions per place. [2022-11-20 12:39:22,008 INFO L137 encePairwiseOnDemand]: 110/120 looper letters, 48 selfloop transitions, 41 changer transitions 0/192 dead transitions. [2022-11-20 12:39:22,008 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 192 transitions, 731 flow [2022-11-20 12:39:22,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 12:39:22,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 12:39:22,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1944 transitions. [2022-11-20 12:39:22,015 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9 [2022-11-20 12:39:22,015 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1944 transitions. [2022-11-20 12:39:22,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1944 transitions. [2022-11-20 12:39:22,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:39:22,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1944 transitions. [2022-11-20 12:39:22,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 108.0) internal successors, (1944), 18 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:22,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 120.0) internal successors, (2280), 19 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:22,030 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 120.0) internal successors, (2280), 19 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:22,031 INFO L175 Difference]: Start difference. First operand has 126 places, 119 transitions, 293 flow. Second operand 18 states and 1944 transitions. [2022-11-20 12:39:22,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 192 transitions, 731 flow [2022-11-20 12:39:22,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 192 transitions, 729 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:39:22,038 INFO L231 Difference]: Finished difference. Result has 157 places, 160 transitions, 685 flow [2022-11-20 12:39:22,038 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=685, PETRI_PLACES=157, PETRI_TRANSITIONS=160} [2022-11-20 12:39:22,039 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 39 predicate places. [2022-11-20 12:39:22,039 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 160 transitions, 685 flow [2022-11-20 12:39:22,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 103.54545454545455) internal successors, (1139), 11 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:22,040 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:39:22,040 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-20 12:39:22,046 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 12:39:22,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:39:22,246 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 12:39:22,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:39:22,247 INFO L85 PathProgramCache]: Analyzing trace with hash 652098174, now seen corresponding path program 1 times [2022-11-20 12:39:22,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:39:22,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984097044] [2022-11-20 12:39:22,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:39:22,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:39:22,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:39:22,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:39:22,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:39:22,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984097044] [2022-11-20 12:39:22,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984097044] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:39:22,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266581919] [2022-11-20 12:39:22,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:39:22,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:39:22,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:39:22,411 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:39:22,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:39:22,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:39:22,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:39:22,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:39:22,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:39:22,598 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:39:22,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266581919] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:39:22,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:39:22,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2022-11-20 12:39:22,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4281959] [2022-11-20 12:39:22,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:39:22,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:39:22,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:39:22,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:39:22,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:39:22,609 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 120 [2022-11-20 12:39:22,615 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 160 transitions, 685 flow. Second operand has 5 states, 5 states have (on average 103.4) internal successors, (517), 5 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:22,615 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:39:22,615 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 120 [2022-11-20 12:39:22,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:39:22,845 INFO L130 PetriNetUnfolder]: 113/831 cut-off events. [2022-11-20 12:39:22,846 INFO L131 PetriNetUnfolder]: For 2930/2991 co-relation queries the response was YES. [2022-11-20 12:39:22,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1864 conditions, 831 events. 113/831 cut-off events. For 2930/2991 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5767 event pairs, 28 based on Foata normal form. 91/812 useless extension candidates. Maximal degree in co-relation 1826. Up to 99 conditions per place. [2022-11-20 12:39:22,860 INFO L137 encePairwiseOnDemand]: 114/120 looper letters, 23 selfloop transitions, 14 changer transitions 0/140 dead transitions. [2022-11-20 12:39:22,860 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 140 transitions, 618 flow [2022-11-20 12:39:22,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:39:22,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:39:22,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 531 transitions. [2022-11-20 12:39:22,862 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.885 [2022-11-20 12:39:22,862 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 531 transitions. [2022-11-20 12:39:22,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 531 transitions. [2022-11-20 12:39:22,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:39:22,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 531 transitions. [2022-11-20 12:39:22,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 106.2) internal successors, (531), 5 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:22,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:22,866 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:22,866 INFO L175 Difference]: Start difference. First operand has 157 places, 160 transitions, 685 flow. Second operand 5 states and 531 transitions. [2022-11-20 12:39:22,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 140 transitions, 618 flow [2022-11-20 12:39:22,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 140 transitions, 533 flow, removed 25 selfloop flow, removed 14 redundant places. [2022-11-20 12:39:22,878 INFO L231 Difference]: Finished difference. Result has 143 places, 136 transitions, 478 flow [2022-11-20 12:39:22,879 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=478, PETRI_PLACES=143, PETRI_TRANSITIONS=136} [2022-11-20 12:39:22,879 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 25 predicate places. [2022-11-20 12:39:22,880 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 136 transitions, 478 flow [2022-11-20 12:39:22,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 103.4) internal successors, (517), 5 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:22,880 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:39:22,880 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] [2022-11-20 12:39:22,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:39:23,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:39:23,086 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 12:39:23,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:39:23,087 INFO L85 PathProgramCache]: Analyzing trace with hash -82011894, now seen corresponding path program 1 times [2022-11-20 12:39:23,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:39:23,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886164960] [2022-11-20 12:39:23,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:39:23,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:39:23,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:39:23,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:39:23,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:39:23,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886164960] [2022-11-20 12:39:23,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886164960] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:39:23,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:39:23,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:39:23,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753922567] [2022-11-20 12:39:23,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:39:23,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:39:23,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:39:23,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:39:23,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:39:23,203 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 120 [2022-11-20 12:39:23,203 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 136 transitions, 478 flow. Second operand has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:23,204 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:39:23,204 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 120 [2022-11-20 12:39:23,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:39:23,438 INFO L130 PetriNetUnfolder]: 168/711 cut-off events. [2022-11-20 12:39:23,439 INFO L131 PetriNetUnfolder]: For 1690/1794 co-relation queries the response was YES. [2022-11-20 12:39:23,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2022 conditions, 711 events. 168/711 cut-off events. For 1690/1794 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 4448 event pairs, 36 based on Foata normal form. 18/664 useless extension candidates. Maximal degree in co-relation 1965. Up to 197 conditions per place. [2022-11-20 12:39:23,463 INFO L137 encePairwiseOnDemand]: 113/120 looper letters, 62 selfloop transitions, 4 changer transitions 0/165 dead transitions. [2022-11-20 12:39:23,464 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 165 transitions, 797 flow [2022-11-20 12:39:23,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:39:23,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:39:23,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 518 transitions. [2022-11-20 12:39:23,468 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8633333333333333 [2022-11-20 12:39:23,468 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 518 transitions. [2022-11-20 12:39:23,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 518 transitions. [2022-11-20 12:39:23,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:39:23,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 518 transitions. [2022-11-20 12:39:23,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 103.6) internal successors, (518), 5 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:23,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:23,475 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:23,475 INFO L175 Difference]: Start difference. First operand has 143 places, 136 transitions, 478 flow. Second operand 5 states and 518 transitions. [2022-11-20 12:39:23,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 165 transitions, 797 flow [2022-11-20 12:39:23,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 165 transitions, 794 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:39:23,485 INFO L231 Difference]: Finished difference. Result has 148 places, 139 transitions, 507 flow [2022-11-20 12:39:23,485 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=507, PETRI_PLACES=148, PETRI_TRANSITIONS=139} [2022-11-20 12:39:23,489 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 30 predicate places. [2022-11-20 12:39:23,489 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 139 transitions, 507 flow [2022-11-20 12:39:23,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:23,490 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:39:23,490 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-20 12:39:23,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 12:39:23,491 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 12:39:23,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:39:23,491 INFO L85 PathProgramCache]: Analyzing trace with hash -398869696, now seen corresponding path program 1 times [2022-11-20 12:39:23,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:39:23,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297867368] [2022-11-20 12:39:23,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:39:23,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:39:23,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:39:23,581 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:39:23,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:39:23,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297867368] [2022-11-20 12:39:23,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297867368] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:39:23,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:39:23,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:39:23,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118552731] [2022-11-20 12:39:23,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:39:23,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:39:23,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:39:23,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:39:23,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:39:23,591 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 120 [2022-11-20 12:39:23,592 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 139 transitions, 507 flow. Second operand has 4 states, 4 states have (on average 101.5) internal successors, (406), 4 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:23,592 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:39:23,593 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 120 [2022-11-20 12:39:23,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:39:23,789 INFO L130 PetriNetUnfolder]: 184/634 cut-off events. [2022-11-20 12:39:23,790 INFO L131 PetriNetUnfolder]: For 1633/1770 co-relation queries the response was YES. [2022-11-20 12:39:23,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2060 conditions, 634 events. 184/634 cut-off events. For 1633/1770 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4045 event pairs, 26 based on Foata normal form. 33/617 useless extension candidates. Maximal degree in co-relation 2000. Up to 138 conditions per place. [2022-11-20 12:39:23,811 INFO L137 encePairwiseOnDemand]: 114/120 looper letters, 59 selfloop transitions, 8 changer transitions 0/166 dead transitions. [2022-11-20 12:39:23,811 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 166 transitions, 855 flow [2022-11-20 12:39:23,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:39:23,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:39:23,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 512 transitions. [2022-11-20 12:39:23,814 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8533333333333334 [2022-11-20 12:39:23,816 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 512 transitions. [2022-11-20 12:39:23,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 512 transitions. [2022-11-20 12:39:23,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:39:23,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 512 transitions. [2022-11-20 12:39:23,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 102.4) internal successors, (512), 5 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:23,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:23,821 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:23,821 INFO L175 Difference]: Start difference. First operand has 148 places, 139 transitions, 507 flow. Second operand 5 states and 512 transitions. [2022-11-20 12:39:23,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 166 transitions, 855 flow [2022-11-20 12:39:23,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 166 transitions, 853 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:39:23,830 INFO L231 Difference]: Finished difference. Result has 151 places, 139 transitions, 525 flow [2022-11-20 12:39:23,831 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=525, PETRI_PLACES=151, PETRI_TRANSITIONS=139} [2022-11-20 12:39:23,834 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 33 predicate places. [2022-11-20 12:39:23,834 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 139 transitions, 525 flow [2022-11-20 12:39:23,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.5) internal successors, (406), 4 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:23,835 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:39:23,835 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] [2022-11-20 12:39:23,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 12:39:23,836 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 12:39:23,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:39:23,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1768695099, now seen corresponding path program 1 times [2022-11-20 12:39:23,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:39:23,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453539687] [2022-11-20 12:39:23,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:39:23,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:39:23,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:39:23,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:39:23,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:39:23,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453539687] [2022-11-20 12:39:23,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453539687] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:39:23,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:39:23,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:39:23,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846722170] [2022-11-20 12:39:23,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:39:23,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:39:23,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:39:23,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:39:23,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:39:23,968 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 120 [2022-11-20 12:39:23,969 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 139 transitions, 525 flow. Second operand has 4 states, 4 states have (on average 100.25) internal successors, (401), 4 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:23,969 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:39:23,970 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 120 [2022-11-20 12:39:23,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:39:24,516 INFO L130 PetriNetUnfolder]: 713/2625 cut-off events. [2022-11-20 12:39:24,516 INFO L131 PetriNetUnfolder]: For 5825/6193 co-relation queries the response was YES. [2022-11-20 12:39:24,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7265 conditions, 2625 events. 713/2625 cut-off events. For 5825/6193 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 22638 event pairs, 104 based on Foata normal form. 36/2406 useless extension candidates. Maximal degree in co-relation 7202. Up to 593 conditions per place. [2022-11-20 12:39:24,625 INFO L137 encePairwiseOnDemand]: 114/120 looper letters, 86 selfloop transitions, 4 changer transitions 0/193 dead transitions. [2022-11-20 12:39:24,625 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 193 transitions, 1085 flow [2022-11-20 12:39:24,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:39:24,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:39:24,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 422 transitions. [2022-11-20 12:39:24,634 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8791666666666667 [2022-11-20 12:39:24,635 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 422 transitions. [2022-11-20 12:39:24,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 422 transitions. [2022-11-20 12:39:24,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:39:24,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 422 transitions. [2022-11-20 12:39:24,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 105.5) internal successors, (422), 4 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:24,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:24,639 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:24,639 INFO L175 Difference]: Start difference. First operand has 151 places, 139 transitions, 525 flow. Second operand 4 states and 422 transitions. [2022-11-20 12:39:24,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 193 transitions, 1085 flow [2022-11-20 12:39:24,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 193 transitions, 1073 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:39:24,652 INFO L231 Difference]: Finished difference. Result has 153 places, 141 transitions, 539 flow [2022-11-20 12:39:24,652 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=539, PETRI_PLACES=153, PETRI_TRANSITIONS=141} [2022-11-20 12:39:24,653 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 35 predicate places. [2022-11-20 12:39:24,653 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 141 transitions, 539 flow [2022-11-20 12:39:24,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.25) internal successors, (401), 4 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:24,654 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:39:24,654 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:39:24,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 12:39:24,654 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 12:39:24,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:39:24,664 INFO L85 PathProgramCache]: Analyzing trace with hash 519941638, now seen corresponding path program 1 times [2022-11-20 12:39:24,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:39:24,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147742064] [2022-11-20 12:39:24,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:39:24,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:39:24,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:39:24,774 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:39:24,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:39:24,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147742064] [2022-11-20 12:39:24,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147742064] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:39:24,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503021397] [2022-11-20 12:39:24,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:39:24,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:39:24,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:39:24,777 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:39:24,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:39:24,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:39:24,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:39:24,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:39:24,902 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:39:24,902 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:39:24,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503021397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:39:24,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:39:24,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 12:39:24,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532001241] [2022-11-20 12:39:24,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:39:24,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:39:24,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:39:24,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:39:24,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:39:24,905 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 120 [2022-11-20 12:39:24,906 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 141 transitions, 539 flow. Second operand has 6 states, 6 states have (on average 100.5) internal successors, (603), 6 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:24,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:39:24,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 120 [2022-11-20 12:39:24,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:39:25,238 INFO L130 PetriNetUnfolder]: 180/725 cut-off events. [2022-11-20 12:39:25,238 INFO L131 PetriNetUnfolder]: For 1792/1908 co-relation queries the response was YES. [2022-11-20 12:39:25,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2248 conditions, 725 events. 180/725 cut-off events. For 1792/1908 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4811 event pairs, 30 based on Foata normal form. 23/700 useless extension candidates. Maximal degree in co-relation 2181. Up to 136 conditions per place. [2022-11-20 12:39:25,271 INFO L137 encePairwiseOnDemand]: 115/120 looper letters, 62 selfloop transitions, 6 changer transitions 0/169 dead transitions. [2022-11-20 12:39:25,271 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 169 transitions, 883 flow [2022-11-20 12:39:25,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:39:25,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:39:25,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 715 transitions. [2022-11-20 12:39:25,274 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8511904761904762 [2022-11-20 12:39:25,274 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 715 transitions. [2022-11-20 12:39:25,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 715 transitions. [2022-11-20 12:39:25,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:39:25,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 715 transitions. [2022-11-20 12:39:25,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 102.14285714285714) internal successors, (715), 7 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:25,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 120.0) internal successors, (960), 8 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:25,280 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 120.0) internal successors, (960), 8 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:25,280 INFO L175 Difference]: Start difference. First operand has 153 places, 141 transitions, 539 flow. Second operand 7 states and 715 transitions. [2022-11-20 12:39:25,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 169 transitions, 883 flow [2022-11-20 12:39:25,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 169 transitions, 881 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:39:25,290 INFO L231 Difference]: Finished difference. Result has 157 places, 140 transitions, 545 flow [2022-11-20 12:39:25,290 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=545, PETRI_PLACES=157, PETRI_TRANSITIONS=140} [2022-11-20 12:39:25,291 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 39 predicate places. [2022-11-20 12:39:25,291 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 140 transitions, 545 flow [2022-11-20 12:39:25,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 100.5) internal successors, (603), 6 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:25,291 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:39:25,292 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-20 12:39:25,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:39:25,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:39:25,497 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 12:39:25,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:39:25,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1863821652, now seen corresponding path program 1 times [2022-11-20 12:39:25,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:39:25,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984816127] [2022-11-20 12:39:25,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:39:25,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:39:25,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:39:25,554 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:39:25,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:39:25,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984816127] [2022-11-20 12:39:25,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984816127] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:39:25,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:39:25,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:39:25,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933757838] [2022-11-20 12:39:25,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:39:25,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:39:25,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:39:25,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:39:25,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:39:25,559 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 120 [2022-11-20 12:39:25,559 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 140 transitions, 545 flow. Second operand has 4 states, 4 states have (on average 101.75) internal successors, (407), 4 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:25,560 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:39:25,560 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 120 [2022-11-20 12:39:25,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:39:25,786 INFO L130 PetriNetUnfolder]: 155/639 cut-off events. [2022-11-20 12:39:25,786 INFO L131 PetriNetUnfolder]: For 1661/1773 co-relation queries the response was YES. [2022-11-20 12:39:25,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1994 conditions, 639 events. 155/639 cut-off events. For 1661/1773 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3865 event pairs, 25 based on Foata normal form. 31/638 useless extension candidates. Maximal degree in co-relation 1926. Up to 133 conditions per place. [2022-11-20 12:39:25,839 INFO L137 encePairwiseOnDemand]: 114/120 looper letters, 59 selfloop transitions, 8 changer transitions 0/167 dead transitions. [2022-11-20 12:39:25,839 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 167 transitions, 884 flow [2022-11-20 12:39:25,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:39:25,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:39:25,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 509 transitions. [2022-11-20 12:39:25,841 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8483333333333334 [2022-11-20 12:39:25,841 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 509 transitions. [2022-11-20 12:39:25,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 509 transitions. [2022-11-20 12:39:25,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:39:25,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 509 transitions. [2022-11-20 12:39:25,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 101.8) internal successors, (509), 5 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:25,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:25,845 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:25,845 INFO L175 Difference]: Start difference. First operand has 157 places, 140 transitions, 545 flow. Second operand 5 states and 509 transitions. [2022-11-20 12:39:25,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 167 transitions, 884 flow [2022-11-20 12:39:25,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 167 transitions, 873 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-20 12:39:25,854 INFO L231 Difference]: Finished difference. Result has 156 places, 140 transitions, 554 flow [2022-11-20 12:39:25,854 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=554, PETRI_PLACES=156, PETRI_TRANSITIONS=140} [2022-11-20 12:39:25,855 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 38 predicate places. [2022-11-20 12:39:25,855 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 140 transitions, 554 flow [2022-11-20 12:39:25,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.75) internal successors, (407), 4 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:25,856 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:39:25,856 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:39:25,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 12:39:25,856 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 12:39:25,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:39:25,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1943896707, now seen corresponding path program 1 times [2022-11-20 12:39:25,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:39:25,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12248583] [2022-11-20 12:39:25,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:39:25,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:39:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:39:25,971 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:39:25,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:39:25,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12248583] [2022-11-20 12:39:25,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12248583] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:39:25,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917775519] [2022-11-20 12:39:25,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:39:25,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:39:25,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:39:25,973 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:39:25,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:39:26,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:39:26,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:39:26,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:39:26,121 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:39:26,121 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:39:26,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917775519] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:39:26,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:39:26,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-20 12:39:26,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622768097] [2022-11-20 12:39:26,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:39:26,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:39:26,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:39:26,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:39:26,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:39:26,124 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 120 [2022-11-20 12:39:26,125 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 140 transitions, 554 flow. Second operand has 5 states, 5 states have (on average 101.2) internal successors, (506), 5 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:26,125 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:39:26,125 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 120 [2022-11-20 12:39:26,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:39:26,334 INFO L130 PetriNetUnfolder]: 148/585 cut-off events. [2022-11-20 12:39:26,334 INFO L131 PetriNetUnfolder]: For 1504/1605 co-relation queries the response was YES. [2022-11-20 12:39:26,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1887 conditions, 585 events. 148/585 cut-off events. For 1504/1605 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3325 event pairs, 29 based on Foata normal form. 23/572 useless extension candidates. Maximal degree in co-relation 1819. Up to 150 conditions per place. [2022-11-20 12:39:26,388 INFO L137 encePairwiseOnDemand]: 116/120 looper letters, 43 selfloop transitions, 5 changer transitions 0/148 dead transitions. [2022-11-20 12:39:26,388 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 148 transitions, 715 flow [2022-11-20 12:39:26,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:39:26,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:39:26,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 407 transitions. [2022-11-20 12:39:26,390 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8479166666666667 [2022-11-20 12:39:26,391 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 407 transitions. [2022-11-20 12:39:26,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 407 transitions. [2022-11-20 12:39:26,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:39:26,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 407 transitions. [2022-11-20 12:39:26,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 101.75) internal successors, (407), 4 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:26,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:26,394 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:26,394 INFO L175 Difference]: Start difference. First operand has 156 places, 140 transitions, 554 flow. Second operand 4 states and 407 transitions. [2022-11-20 12:39:26,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 148 transitions, 715 flow [2022-11-20 12:39:26,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 148 transitions, 703 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:39:26,401 INFO L231 Difference]: Finished difference. Result has 155 places, 139 transitions, 548 flow [2022-11-20 12:39:26,402 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=548, PETRI_PLACES=155, PETRI_TRANSITIONS=139} [2022-11-20 12:39:26,402 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 37 predicate places. [2022-11-20 12:39:26,402 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 139 transitions, 548 flow [2022-11-20 12:39:26,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 101.2) internal successors, (506), 5 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:26,403 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:39:26,403 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] [2022-11-20 12:39:26,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:39:26,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:39:26,609 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 12:39:26,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:39:26,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1261891889, now seen corresponding path program 1 times [2022-11-20 12:39:26,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:39:26,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28648322] [2022-11-20 12:39:26,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:39:26,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:39:26,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:39:26,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:39:26,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:39:26,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28648322] [2022-11-20 12:39:26,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28648322] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:39:26,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:39:26,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:39:26,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385093164] [2022-11-20 12:39:26,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:39:26,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:39:26,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:39:26,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:39:26,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:39:26,667 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 120 [2022-11-20 12:39:26,667 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 139 transitions, 548 flow. Second operand has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:26,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:39:26,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 120 [2022-11-20 12:39:26,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:39:27,200 INFO L130 PetriNetUnfolder]: 844/2627 cut-off events. [2022-11-20 12:39:27,200 INFO L131 PetriNetUnfolder]: For 6060/6426 co-relation queries the response was YES. [2022-11-20 12:39:27,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7703 conditions, 2627 events. 844/2627 cut-off events. For 6060/6426 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 21451 event pairs, 86 based on Foata normal form. 12/2393 useless extension candidates. Maximal degree in co-relation 7634. Up to 664 conditions per place. [2022-11-20 12:39:27,242 INFO L137 encePairwiseOnDemand]: 113/120 looper letters, 112 selfloop transitions, 4 changer transitions 0/217 dead transitions. [2022-11-20 12:39:27,242 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 217 transitions, 1344 flow [2022-11-20 12:39:27,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:39:27,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:39:27,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 516 transitions. [2022-11-20 12:39:27,244 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.86 [2022-11-20 12:39:27,245 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 516 transitions. [2022-11-20 12:39:27,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 516 transitions. [2022-11-20 12:39:27,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:39:27,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 516 transitions. [2022-11-20 12:39:27,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 103.2) internal successors, (516), 5 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:27,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:27,248 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:27,249 INFO L175 Difference]: Start difference. First operand has 155 places, 139 transitions, 548 flow. Second operand 5 states and 516 transitions. [2022-11-20 12:39:27,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 217 transitions, 1344 flow [2022-11-20 12:39:27,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 217 transitions, 1334 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:39:27,259 INFO L231 Difference]: Finished difference. Result has 159 places, 142 transitions, 570 flow [2022-11-20 12:39:27,260 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=570, PETRI_PLACES=159, PETRI_TRANSITIONS=142} [2022-11-20 12:39:27,260 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 41 predicate places. [2022-11-20 12:39:27,261 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 142 transitions, 570 flow [2022-11-20 12:39:27,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:27,261 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:39:27,261 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-20 12:39:27,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 12:39:27,262 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 12:39:27,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:39:27,262 INFO L85 PathProgramCache]: Analyzing trace with hash 831417940, now seen corresponding path program 1 times [2022-11-20 12:39:27,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:39:27,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919645957] [2022-11-20 12:39:27,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:39:27,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:39:27,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:39:27,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:39:27,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:39:27,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919645957] [2022-11-20 12:39:27,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919645957] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:39:27,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401124962] [2022-11-20 12:39:27,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:39:27,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:39:27,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:39:27,424 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:39:27,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 12:39:27,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:39:27,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:39:27,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:39:27,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:39:27,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:39:27,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:39:27,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401124962] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:39:27,998 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:39:27,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2022-11-20 12:39:27,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183859011] [2022-11-20 12:39:27,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:39:27,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 12:39:28,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:39:28,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 12:39:28,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-11-20 12:39:28,003 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 120 [2022-11-20 12:39:28,006 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 142 transitions, 570 flow. Second operand has 17 states, 17 states have (on average 99.94117647058823) internal successors, (1699), 17 states have internal predecessors, (1699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:28,022 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:39:28,022 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 120 [2022-11-20 12:39:28,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:39:29,259 INFO L130 PetriNetUnfolder]: 1218/4514 cut-off events. [2022-11-20 12:39:29,259 INFO L131 PetriNetUnfolder]: For 7970/8507 co-relation queries the response was YES. [2022-11-20 12:39:29,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11735 conditions, 4514 events. 1218/4514 cut-off events. For 7970/8507 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 42178 event pairs, 80 based on Foata normal form. 78/4332 useless extension candidates. Maximal degree in co-relation 11661. Up to 690 conditions per place. [2022-11-20 12:39:29,416 INFO L137 encePairwiseOnDemand]: 112/120 looper letters, 211 selfloop transitions, 11 changer transitions 0/325 dead transitions. [2022-11-20 12:39:29,417 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 325 transitions, 2340 flow [2022-11-20 12:39:29,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:39:29,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 12:39:29,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1126 transitions. [2022-11-20 12:39:29,420 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.853030303030303 [2022-11-20 12:39:29,420 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1126 transitions. [2022-11-20 12:39:29,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1126 transitions. [2022-11-20 12:39:29,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:39:29,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1126 transitions. [2022-11-20 12:39:29,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 102.36363636363636) internal successors, (1126), 11 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:29,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:29,428 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:29,428 INFO L175 Difference]: Start difference. First operand has 159 places, 142 transitions, 570 flow. Second operand 11 states and 1126 transitions. [2022-11-20 12:39:29,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 325 transitions, 2340 flow [2022-11-20 12:39:29,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 325 transitions, 2338 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:39:29,444 INFO L231 Difference]: Finished difference. Result has 172 places, 147 transitions, 625 flow [2022-11-20 12:39:29,445 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=625, PETRI_PLACES=172, PETRI_TRANSITIONS=147} [2022-11-20 12:39:29,445 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 54 predicate places. [2022-11-20 12:39:29,446 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 147 transitions, 625 flow [2022-11-20 12:39:29,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 99.94117647058823) internal successors, (1699), 17 states have internal predecessors, (1699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:29,447 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:39:29,447 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-20 12:39:29,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:39:29,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:39:29,653 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 12:39:29,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:39:29,654 INFO L85 PathProgramCache]: Analyzing trace with hash 4152592, now seen corresponding path program 1 times [2022-11-20 12:39:29,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:39:29,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624413588] [2022-11-20 12:39:29,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:39:29,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:39:29,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:39:29,818 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:39:29,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:39:29,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624413588] [2022-11-20 12:39:29,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624413588] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:39:29,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986677143] [2022-11-20 12:39:29,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:39:29,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:39:29,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:39:29,820 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:39:29,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 12:39:29,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:39:29,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:39:29,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:39:30,148 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:39:30,148 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:39:30,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986677143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:39:30,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:39:30,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2022-11-20 12:39:30,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56493395] [2022-11-20 12:39:30,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:39:30,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:39:30,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:39:30,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:39:30,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:39:30,152 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 120 [2022-11-20 12:39:30,153 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 147 transitions, 625 flow. Second operand has 7 states, 7 states have (on average 99.71428571428571) internal successors, (698), 7 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:30,154 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:39:30,154 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 120 [2022-11-20 12:39:30,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:39:31,160 INFO L130 PetriNetUnfolder]: 1071/4238 cut-off events. [2022-11-20 12:39:31,160 INFO L131 PetriNetUnfolder]: For 7379/7850 co-relation queries the response was YES. [2022-11-20 12:39:31,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11095 conditions, 4238 events. 1071/4238 cut-off events. For 7379/7850 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 39183 event pairs, 56 based on Foata normal form. 100/4093 useless extension candidates. Maximal degree in co-relation 11014. Up to 1302 conditions per place. [2022-11-20 12:39:31,240 INFO L137 encePairwiseOnDemand]: 115/120 looper letters, 90 selfloop transitions, 4 changer transitions 0/197 dead transitions. [2022-11-20 12:39:31,241 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 197 transitions, 1189 flow [2022-11-20 12:39:31,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:39:31,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:39:31,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 611 transitions. [2022-11-20 12:39:31,244 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8486111111111111 [2022-11-20 12:39:31,244 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 611 transitions. [2022-11-20 12:39:31,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 611 transitions. [2022-11-20 12:39:31,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:39:31,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 611 transitions. [2022-11-20 12:39:31,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 101.83333333333333) internal successors, (611), 6 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:31,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 120.0) internal successors, (840), 7 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:31,250 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 120.0) internal successors, (840), 7 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:31,250 INFO L175 Difference]: Start difference. First operand has 172 places, 147 transitions, 625 flow. Second operand 6 states and 611 transitions. [2022-11-20 12:39:31,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 197 transitions, 1189 flow [2022-11-20 12:39:31,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 197 transitions, 1173 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-11-20 12:39:31,270 INFO L231 Difference]: Finished difference. Result has 173 places, 147 transitions, 623 flow [2022-11-20 12:39:31,271 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=605, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=623, PETRI_PLACES=173, PETRI_TRANSITIONS=147} [2022-11-20 12:39:31,272 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 55 predicate places. [2022-11-20 12:39:31,272 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 147 transitions, 623 flow [2022-11-20 12:39:31,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 99.71428571428571) internal successors, (698), 7 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:31,273 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:39:31,273 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 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] [2022-11-20 12:39:31,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 12:39:31,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 12:39:31,479 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 12:39:31,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:39:31,479 INFO L85 PathProgramCache]: Analyzing trace with hash -866080606, now seen corresponding path program 1 times [2022-11-20 12:39:31,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:39:31,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271738395] [2022-11-20 12:39:31,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:39:31,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:39:31,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:39:31,628 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:39:31,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:39:31,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271738395] [2022-11-20 12:39:31,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271738395] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:39:31,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065563103] [2022-11-20 12:39:31,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:39:31,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:39:31,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:39:31,630 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:39:31,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 12:39:31,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:39:31,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:39:31,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:39:31,911 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:39:31,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:39:32,062 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:39:32,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065563103] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:39:32,062 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:39:32,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2022-11-20 12:39:32,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139033539] [2022-11-20 12:39:32,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:39:32,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 12:39:32,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:39:32,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 12:39:32,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2022-11-20 12:39:32,067 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 120 [2022-11-20 12:39:32,070 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 147 transitions, 623 flow. Second operand has 17 states, 17 states have (on average 103.52941176470588) internal successors, (1760), 17 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:32,070 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:39:32,070 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 120 [2022-11-20 12:39:32,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:39:33,382 INFO L130 PetriNetUnfolder]: 559/2830 cut-off events. [2022-11-20 12:39:33,382 INFO L131 PetriNetUnfolder]: For 12042/12379 co-relation queries the response was YES. [2022-11-20 12:39:33,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7835 conditions, 2830 events. 559/2830 cut-off events. For 12042/12379 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 26979 event pairs, 28 based on Foata normal form. 286/2964 useless extension candidates. Maximal degree in co-relation 7753. Up to 368 conditions per place. [2022-11-20 12:39:33,453 INFO L137 encePairwiseOnDemand]: 112/120 looper letters, 50 selfloop transitions, 58 changer transitions 0/222 dead transitions. [2022-11-20 12:39:33,453 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 222 transitions, 1347 flow [2022-11-20 12:39:33,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-20 12:39:33,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-11-20 12:39:33,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2871 transitions. [2022-11-20 12:39:33,460 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8861111111111111 [2022-11-20 12:39:33,460 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2871 transitions. [2022-11-20 12:39:33,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2871 transitions. [2022-11-20 12:39:33,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:39:33,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2871 transitions. [2022-11-20 12:39:33,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 106.33333333333333) internal successors, (2871), 27 states have internal predecessors, (2871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:33,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 120.0) internal successors, (3360), 28 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:33,479 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 120.0) internal successors, (3360), 28 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:33,479 INFO L175 Difference]: Start difference. First operand has 173 places, 147 transitions, 623 flow. Second operand 27 states and 2871 transitions. [2022-11-20 12:39:33,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 222 transitions, 1347 flow [2022-11-20 12:39:33,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 222 transitions, 1338 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-11-20 12:39:33,502 INFO L231 Difference]: Finished difference. Result has 209 places, 183 transitions, 1156 flow [2022-11-20 12:39:33,503 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1156, PETRI_PLACES=209, PETRI_TRANSITIONS=183} [2022-11-20 12:39:33,503 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 91 predicate places. [2022-11-20 12:39:33,504 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 183 transitions, 1156 flow [2022-11-20 12:39:33,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 103.52941176470588) internal successors, (1760), 17 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:33,505 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:39:33,505 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 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] [2022-11-20 12:39:33,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 12:39:33,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 12:39:33,711 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 12:39:33,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:39:33,711 INFO L85 PathProgramCache]: Analyzing trace with hash 751591720, now seen corresponding path program 1 times [2022-11-20 12:39:33,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:39:33,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029520966] [2022-11-20 12:39:33,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:39:33,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:39:33,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:39:33,756 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:39:33,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:39:33,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029520966] [2022-11-20 12:39:33,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029520966] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:39:33,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:39:33,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:39:33,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462721613] [2022-11-20 12:39:33,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:39:33,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:39:33,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:39:33,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:39:33,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:39:33,760 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 120 [2022-11-20 12:39:33,760 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 183 transitions, 1156 flow. Second operand has 4 states, 4 states have (on average 100.5) internal successors, (402), 4 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:33,760 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:39:33,761 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 120 [2022-11-20 12:39:33,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:39:36,646 INFO L130 PetriNetUnfolder]: 2877/10782 cut-off events. [2022-11-20 12:39:36,647 INFO L131 PetriNetUnfolder]: For 66444/68147 co-relation queries the response was YES. [2022-11-20 12:39:36,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35965 conditions, 10782 events. 2877/10782 cut-off events. For 66444/68147 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 118481 event pairs, 378 based on Foata normal form. 134/10498 useless extension candidates. Maximal degree in co-relation 35871. Up to 2014 conditions per place. [2022-11-20 12:39:37,014 INFO L137 encePairwiseOnDemand]: 114/120 looper letters, 241 selfloop transitions, 8 changer transitions 0/357 dead transitions. [2022-11-20 12:39:37,014 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 357 transitions, 3530 flow [2022-11-20 12:39:37,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:39:37,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:39:37,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 508 transitions. [2022-11-20 12:39:37,016 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8466666666666667 [2022-11-20 12:39:37,017 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 508 transitions. [2022-11-20 12:39:37,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 508 transitions. [2022-11-20 12:39:37,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:39:37,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 508 transitions. [2022-11-20 12:39:37,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 101.6) internal successors, (508), 5 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:37,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:37,021 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:37,021 INFO L175 Difference]: Start difference. First operand has 209 places, 183 transitions, 1156 flow. Second operand 5 states and 508 transitions. [2022-11-20 12:39:37,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 357 transitions, 3530 flow [2022-11-20 12:39:37,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 357 transitions, 3083 flow, removed 184 selfloop flow, removed 8 redundant places. [2022-11-20 12:39:37,182 INFO L231 Difference]: Finished difference. Result has 205 places, 183 transitions, 1035 flow [2022-11-20 12:39:37,183 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=1011, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1035, PETRI_PLACES=205, PETRI_TRANSITIONS=183} [2022-11-20 12:39:37,185 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 87 predicate places. [2022-11-20 12:39:37,185 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 183 transitions, 1035 flow [2022-11-20 12:39:37,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.5) internal successors, (402), 4 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:37,202 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:39:37,202 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 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] [2022-11-20 12:39:37,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 12:39:37,202 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 12:39:37,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:39:37,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1824507043, now seen corresponding path program 1 times [2022-11-20 12:39:37,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:39:37,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802744929] [2022-11-20 12:39:37,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:39:37,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:39:37,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:39:37,312 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:39:37,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:39:37,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802744929] [2022-11-20 12:39:37,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802744929] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:39:37,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060084695] [2022-11-20 12:39:37,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:39:37,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:39:37,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:39:37,316 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:39:37,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 12:39:37,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:39:37,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:39:37,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:39:37,462 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:39:37,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:39:37,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060084695] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:39:37,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:39:37,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-20 12:39:37,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961322396] [2022-11-20 12:39:37,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:39:37,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:39:37,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:39:37,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:39:37,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:39:37,467 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 120 [2022-11-20 12:39:37,469 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 183 transitions, 1035 flow. Second operand has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:37,469 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:39:37,469 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 120 [2022-11-20 12:39:37,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:39:39,959 INFO L130 PetriNetUnfolder]: 2705/10078 cut-off events. [2022-11-20 12:39:39,960 INFO L131 PetriNetUnfolder]: For 69078/70200 co-relation queries the response was YES. [2022-11-20 12:39:40,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34798 conditions, 10078 events. 2705/10078 cut-off events. For 69078/70200 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 109601 event pairs, 715 based on Foata normal form. 134/9852 useless extension candidates. Maximal degree in co-relation 34705. Up to 1966 conditions per place. [2022-11-20 12:39:40,209 INFO L137 encePairwiseOnDemand]: 116/120 looper letters, 127 selfloop transitions, 5 changer transitions 0/240 dead transitions. [2022-11-20 12:39:40,210 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 240 transitions, 1819 flow [2022-11-20 12:39:40,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:39:40,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:39:40,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 405 transitions. [2022-11-20 12:39:40,212 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.84375 [2022-11-20 12:39:40,212 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 405 transitions. [2022-11-20 12:39:40,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 405 transitions. [2022-11-20 12:39:40,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:39:40,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 405 transitions. [2022-11-20 12:39:40,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 101.25) internal successors, (405), 4 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:40,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:40,216 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:40,217 INFO L175 Difference]: Start difference. First operand has 205 places, 183 transitions, 1035 flow. Second operand 4 states and 405 transitions. [2022-11-20 12:39:40,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 240 transitions, 1819 flow [2022-11-20 12:39:40,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 240 transitions, 1797 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-20 12:39:40,350 INFO L231 Difference]: Finished difference. Result has 203 places, 182 transitions, 1022 flow [2022-11-20 12:39:40,350 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=1012, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1022, PETRI_PLACES=203, PETRI_TRANSITIONS=182} [2022-11-20 12:39:40,351 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 85 predicate places. [2022-11-20 12:39:40,351 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 182 transitions, 1022 flow [2022-11-20 12:39:40,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:40,352 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:39:40,352 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 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] [2022-11-20 12:39:40,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 12:39:40,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 12:39:40,558 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 12:39:40,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:39:40,559 INFO L85 PathProgramCache]: Analyzing trace with hash 956941888, now seen corresponding path program 1 times [2022-11-20 12:39:40,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:39:40,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529955460] [2022-11-20 12:39:40,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:39:40,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:39:40,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:39:40,851 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:39:40,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:39:40,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529955460] [2022-11-20 12:39:40,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529955460] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:39:40,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437654590] [2022-11-20 12:39:40,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:39:40,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:39:40,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:39:40,854 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:39:40,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 12:39:40,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:39:40,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:39:40,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:39:41,283 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:39:41,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:39:41,510 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:39:41,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437654590] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:39:41,511 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:39:41,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2022-11-20 12:39:41,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438023455] [2022-11-20 12:39:41,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:39:41,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 12:39:41,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:39:41,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 12:39:41,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2022-11-20 12:39:41,515 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 120 [2022-11-20 12:39:41,517 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 182 transitions, 1022 flow. Second operand has 23 states, 23 states have (on average 103.3913043478261) internal successors, (2378), 23 states have internal predecessors, (2378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:41,517 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:39:41,517 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 120 [2022-11-20 12:39:41,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:39:44,444 INFO L130 PetriNetUnfolder]: 1044/6317 cut-off events. [2022-11-20 12:39:44,444 INFO L131 PetriNetUnfolder]: For 102376/102929 co-relation queries the response was YES. [2022-11-20 12:39:44,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18345 conditions, 6317 events. 1044/6317 cut-off events. For 102376/102929 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 73063 event pairs, 32 based on Foata normal form. 618/6612 useless extension candidates. Maximal degree in co-relation 18249. Up to 628 conditions per place. [2022-11-20 12:39:44,563 INFO L137 encePairwiseOnDemand]: 112/120 looper letters, 68 selfloop transitions, 157 changer transitions 0/338 dead transitions. [2022-11-20 12:39:44,564 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 338 transitions, 2798 flow [2022-11-20 12:39:44,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-20 12:39:44,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-20 12:39:44,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 4778 transitions. [2022-11-20 12:39:44,573 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8848148148148148 [2022-11-20 12:39:44,573 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 4778 transitions. [2022-11-20 12:39:44,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 4778 transitions. [2022-11-20 12:39:44,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:39:44,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 4778 transitions. [2022-11-20 12:39:44,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 106.17777777777778) internal successors, (4778), 45 states have internal predecessors, (4778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:44,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 120.0) internal successors, (5520), 46 states have internal predecessors, (5520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:44,600 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 120.0) internal successors, (5520), 46 states have internal predecessors, (5520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:44,600 INFO L175 Difference]: Start difference. First operand has 203 places, 182 transitions, 1022 flow. Second operand 45 states and 4778 transitions. [2022-11-20 12:39:44,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 338 transitions, 2798 flow [2022-11-20 12:39:44,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 338 transitions, 2760 flow, removed 14 selfloop flow, removed 4 redundant places. [2022-11-20 12:39:44,685 INFO L231 Difference]: Finished difference. Result has 262 places, 285 transitions, 2583 flow [2022-11-20 12:39:44,685 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=979, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=2583, PETRI_PLACES=262, PETRI_TRANSITIONS=285} [2022-11-20 12:39:44,686 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 144 predicate places. [2022-11-20 12:39:44,686 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 285 transitions, 2583 flow [2022-11-20 12:39:44,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 103.3913043478261) internal successors, (2378), 23 states have internal predecessors, (2378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:44,687 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:39:44,688 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:39:44,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 12:39:44,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 12:39:44,893 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 12:39:44,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:39:44,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1322986484, now seen corresponding path program 2 times [2022-11-20 12:39:44,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:39:44,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582257922] [2022-11-20 12:39:44,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:39:44,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:39:44,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:39:45,213 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:39:45,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:39:45,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582257922] [2022-11-20 12:39:45,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582257922] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:39:45,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919276076] [2022-11-20 12:39:45,214 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:39:45,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:39:45,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:39:45,216 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:39:45,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 12:39:45,331 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:39:45,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:39:45,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 12:39:45,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:39:45,759 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:39:45,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:39:46,111 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:39:46,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919276076] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:39:46,112 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:39:46,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2022-11-20 12:39:46,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582110321] [2022-11-20 12:39:46,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:39:46,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-20 12:39:46,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:39:46,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-20 12:39:46,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=997, Unknown=0, NotChecked=0, Total=1190 [2022-11-20 12:39:46,120 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 120 [2022-11-20 12:39:46,125 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 285 transitions, 2583 flow. Second operand has 35 states, 35 states have (on average 99.8) internal successors, (3493), 35 states have internal predecessors, (3493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:46,125 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:39:46,126 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 120 [2022-11-20 12:39:46,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:39:59,925 INFO L130 PetriNetUnfolder]: 11112/45860 cut-off events. [2022-11-20 12:39:59,925 INFO L131 PetriNetUnfolder]: For 290793/295203 co-relation queries the response was YES. [2022-11-20 12:40:00,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146290 conditions, 45860 events. 11112/45860 cut-off events. For 290793/295203 co-relation queries the response was YES. Maximal size of possible extension queue 812. Compared 618881 event pairs, 408 based on Foata normal form. 588/45035 useless extension candidates. Maximal degree in co-relation 146172. Up to 6934 conditions per place. [2022-11-20 12:40:00,923 INFO L137 encePairwiseOnDemand]: 112/120 looper letters, 3288 selfloop transitions, 23 changer transitions 0/3413 dead transitions. [2022-11-20 12:40:00,923 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 3413 transitions, 47563 flow [2022-11-20 12:40:00,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 12:40:00,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-20 12:40:00,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2349 transitions. [2022-11-20 12:40:00,927 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8510869565217392 [2022-11-20 12:40:00,928 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2349 transitions. [2022-11-20 12:40:00,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2349 transitions. [2022-11-20 12:40:00,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:40:00,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2349 transitions. [2022-11-20 12:40:00,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 102.1304347826087) internal successors, (2349), 23 states have internal predecessors, (2349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:40:00,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 120.0) internal successors, (2880), 24 states have internal predecessors, (2880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:40:00,938 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 120.0) internal successors, (2880), 24 states have internal predecessors, (2880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:40:00,939 INFO L175 Difference]: Start difference. First operand has 262 places, 285 transitions, 2583 flow. Second operand 23 states and 2349 transitions. [2022-11-20 12:40:00,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 3413 transitions, 47563 flow [2022-11-20 12:40:01,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 3413 transitions, 42696 flow, removed 1940 selfloop flow, removed 15 redundant places. [2022-11-20 12:40:01,599 INFO L231 Difference]: Finished difference. Result has 274 places, 298 transitions, 2485 flow [2022-11-20 12:40:01,599 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=2333, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2485, PETRI_PLACES=274, PETRI_TRANSITIONS=298} [2022-11-20 12:40:01,600 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 156 predicate places. [2022-11-20 12:40:01,600 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 298 transitions, 2485 flow [2022-11-20 12:40:01,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 99.8) internal successors, (3493), 35 states have internal predecessors, (3493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:40:01,601 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:40:01,601 INFO L209 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 5, 5, 5, 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] [2022-11-20 12:40:01,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 12:40:01,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-20 12:40:01,806 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 12:40:01,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:40:01,807 INFO L85 PathProgramCache]: Analyzing trace with hash 738930051, now seen corresponding path program 2 times [2022-11-20 12:40:01,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:40:01,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848886156] [2022-11-20 12:40:01,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:40:01,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:40:01,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:40:02,031 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:40:02,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:40:02,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848886156] [2022-11-20 12:40:02,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848886156] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:40:02,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871991784] [2022-11-20 12:40:02,032 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:40:02,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:40:02,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:40:02,035 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:40:02,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 12:40:02,141 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:40:02,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:40:02,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:40:02,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:40:02,525 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:40:02,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:40:02,826 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:40:02,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871991784] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:40:02,826 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:40:02,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2022-11-20 12:40:02,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066494342] [2022-11-20 12:40:02,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:40:02,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-20 12:40:02,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:40:02,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-20 12:40:02,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=577, Unknown=0, NotChecked=0, Total=812 [2022-11-20 12:40:02,831 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 120 [2022-11-20 12:40:02,834 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 298 transitions, 2485 flow. Second operand has 29 states, 29 states have (on average 103.3103448275862) internal successors, (2996), 29 states have internal predecessors, (2996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:40:02,835 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:40:02,835 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 120 [2022-11-20 12:40:02,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:40:12,439 INFO L130 PetriNetUnfolder]: 3810/23013 cut-off events. [2022-11-20 12:40:12,439 INFO L131 PetriNetUnfolder]: For 778583/780559 co-relation queries the response was YES. [2022-11-20 12:40:13,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74758 conditions, 23013 events. 3810/23013 cut-off events. For 778583/780559 co-relation queries the response was YES. Maximal size of possible extension queue 1264. Compared 329528 event pairs, 96 based on Foata normal form. 1061/22624 useless extension candidates. Maximal degree in co-relation 74634. Up to 2009 conditions per place. [2022-11-20 12:40:13,167 INFO L137 encePairwiseOnDemand]: 112/120 looper letters, 106 selfloop transitions, 284 changer transitions 0/516 dead transitions. [2022-11-20 12:40:13,167 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 516 transitions, 5476 flow [2022-11-20 12:40:13,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-11-20 12:40:13,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2022-11-20 12:40:13,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 5819 transitions. [2022-11-20 12:40:13,177 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8816666666666667 [2022-11-20 12:40:13,177 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 5819 transitions. [2022-11-20 12:40:13,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 5819 transitions. [2022-11-20 12:40:13,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:40:13,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 5819 transitions. [2022-11-20 12:40:13,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 105.8) internal successors, (5819), 55 states have internal predecessors, (5819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:40:13,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 120.0) internal successors, (6720), 56 states have internal predecessors, (6720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:40:13,207 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 120.0) internal successors, (6720), 56 states have internal predecessors, (6720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:40:13,207 INFO L175 Difference]: Start difference. First operand has 274 places, 298 transitions, 2485 flow. Second operand 55 states and 5819 transitions. [2022-11-20 12:40:13,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 516 transitions, 5476 flow [2022-11-20 12:40:13,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 516 transitions, 5394 flow, removed 25 selfloop flow, removed 12 redundant places. [2022-11-20 12:40:13,933 INFO L231 Difference]: Finished difference. Result has 331 places, 446 transitions, 4979 flow [2022-11-20 12:40:13,933 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=2403, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=4979, PETRI_PLACES=331, PETRI_TRANSITIONS=446} [2022-11-20 12:40:13,934 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 213 predicate places. [2022-11-20 12:40:13,934 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 446 transitions, 4979 flow [2022-11-20 12:40:13,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 103.3103448275862) internal successors, (2996), 29 states have internal predecessors, (2996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:40:13,935 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:40:13,936 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 12:40:13,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 12:40:14,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:40:14,142 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 12:40:14,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:40:14,143 INFO L85 PathProgramCache]: Analyzing trace with hash 789398012, now seen corresponding path program 1 times [2022-11-20 12:40:14,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:40:14,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274575523] [2022-11-20 12:40:14,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:40:14,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:40:14,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:40:14,669 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:40:14,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:40:14,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274575523] [2022-11-20 12:40:14,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274575523] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:40:14,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334818873] [2022-11-20 12:40:14,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:40:14,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:40:14,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:40:14,672 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:40:14,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b049c28-bb43-4b57-bc0c-efc66c9f8a4d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 12:40:14,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:40:14,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:40:14,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:40:15,078 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:40:15,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:40:15,304 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:40:15,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334818873] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:40:15,305 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:40:15,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2022-11-20 12:40:15,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966092637] [2022-11-20 12:40:15,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:40:15,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-20 12:40:15,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:40:15,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-20 12:40:15,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=463, Unknown=0, NotChecked=0, Total=650 [2022-11-20 12:40:15,315 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 120 [2022-11-20 12:40:15,318 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 446 transitions, 4979 flow. Second operand has 26 states, 26 states have (on average 103.34615384615384) internal successors, (2687), 26 states have internal predecessors, (2687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:40:15,318 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:40:15,318 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 120 [2022-11-20 12:40:15,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand