./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c --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_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/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_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/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_2034d2a3-3adb-4230-9137-2b04fdf8247f/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 2bf204635285748ea2bd88f763410b9afff54eeccde3aa0a970ff723633af9c2 --- 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 12:32:32,055 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:32:32,058 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:32:32,086 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:32:32,087 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:32:32,090 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:32:32,095 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:32:32,097 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:32:32,099 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:32:32,100 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:32:32,101 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:32:32,102 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:32:32,102 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:32:32,103 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:32:32,104 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:32:32,106 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:32:32,106 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:32:32,107 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:32:32,113 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:32:32,115 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:32:32,122 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:32:32,126 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:32:32,127 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:32:32,128 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:32:32,131 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:32:32,134 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:32:32,135 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:32:32,136 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:32:32,138 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:32:32,139 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:32:32,141 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:32:32,142 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:32:32,143 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:32:32,144 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:32:32,146 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:32:32,147 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:32:32,147 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:32:32,148 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:32:32,148 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:32:32,150 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:32:32,152 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:32:32,153 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 12:32:32,199 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:32:32,201 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:32:32,202 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:32:32,202 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:32:32,203 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:32:32,203 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:32:32,204 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:32:32,204 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:32:32,204 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:32:32,205 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:32:32,206 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:32:32,206 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:32:32,206 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:32:32,207 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:32:32,207 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:32:32,207 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:32:32,207 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:32:32,208 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:32:32,208 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 12:32:32,208 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:32:32,208 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:32:32,209 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:32:32,209 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:32:32,209 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:32:32,209 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:32:32,210 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:32:32,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:32:32,210 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:32:32,211 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:32:32,211 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:32:32,211 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:32:32,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:32:32,212 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:32:32,212 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:32:32,213 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:32:32,213 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_2034d2a3-3adb-4230-9137-2b04fdf8247f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2bf204635285748ea2bd88f763410b9afff54eeccde3aa0a970ff723633af9c2 [2022-11-20 12:32:32,518 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:32:32,544 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:32:32,547 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:32:32,548 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:32:32,549 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:32:32,550 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2022-11-20 12:32:35,620 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:32:35,808 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:32:35,808 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2022-11-20 12:32:35,816 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/data/0cd342eca/0a44646bb9e949cdb812bb64122c2930/FLAG189d81dc8 [2022-11-20 12:32:35,830 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/data/0cd342eca/0a44646bb9e949cdb812bb64122c2930 [2022-11-20 12:32:35,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:32:35,835 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:32:35,836 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:32:35,836 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:32:35,840 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:32:35,841 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:32:35" (1/1) ... [2022-11-20 12:32:35,842 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ce46b16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:35, skipping insertion in model container [2022-11-20 12:32:35,842 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:32:35" (1/1) ... [2022-11-20 12:32:35,850 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:32:35,869 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:32:36,050 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_2034d2a3-3adb-4230-9137-2b04fdf8247f/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c[2618,2631] [2022-11-20 12:32:36,055 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:32:36,065 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:32:36,090 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_2034d2a3-3adb-4230-9137-2b04fdf8247f/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c[2618,2631] [2022-11-20 12:32:36,093 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:32:36,106 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:32:36,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:36 WrapperNode [2022-11-20 12:32:36,107 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:32:36,108 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:32:36,108 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:32:36,108 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:32:36,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:36" (1/1) ... [2022-11-20 12:32:36,123 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:36" (1/1) ... [2022-11-20 12:32:36,149 INFO L138 Inliner]: procedures = 25, calls = 41, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 206 [2022-11-20 12:32:36,150 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:32:36,150 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:32:36,150 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:32:36,151 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:32:36,162 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:36" (1/1) ... [2022-11-20 12:32:36,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:36" (1/1) ... [2022-11-20 12:32:36,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:36" (1/1) ... [2022-11-20 12:32:36,166 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:36" (1/1) ... [2022-11-20 12:32:36,186 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:36" (1/1) ... [2022-11-20 12:32:36,191 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:36" (1/1) ... [2022-11-20 12:32:36,193 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:36" (1/1) ... [2022-11-20 12:32:36,195 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:36" (1/1) ... [2022-11-20 12:32:36,202 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:32:36,203 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:32:36,205 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:32:36,205 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:32:36,206 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:36" (1/1) ... [2022-11-20 12:32:36,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:32:36,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:32:36,246 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:32:36,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:32:36,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:32:36,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 12:32:36,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:32:36,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:32:36,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:32:36,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 12:32:36,287 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 12:32:36,287 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 12:32:36,287 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 12:32:36,287 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 12:32:36,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:32:36,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:32:36,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:32:36,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:32:36,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:32:36,290 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 12:32:36,411 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:32:36,414 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:32:37,012 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:32:37,024 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:32:37,024 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-20 12:32:37,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:32:37 BoogieIcfgContainer [2022-11-20 12:32:37,027 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:32:37,068 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:32:37,068 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:32:37,071 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:32:37,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:32:35" (1/3) ... [2022-11-20 12:32:37,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2177acd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:32:37, skipping insertion in model container [2022-11-20 12:32:37,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:36" (2/3) ... [2022-11-20 12:32:37,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2177acd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:32:37, skipping insertion in model container [2022-11-20 12:32:37,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:32:37" (3/3) ... [2022-11-20 12:32:37,074 INFO L112 eAbstractionObserver]: Analyzing ICFG loop-tiling-eq.wvr.c [2022-11-20 12:32:37,084 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 12:32:37,096 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:32:37,096 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2022-11-20 12:32:37,097 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:32:37,259 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 12:32:37,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 315 places, 335 transitions, 686 flow [2022-11-20 12:32:37,424 INFO L130 PetriNetUnfolder]: 27/333 cut-off events. [2022-11-20 12:32:37,424 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 12:32:37,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 333 events. 27/333 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 455 event pairs, 0 based on Foata normal form. 0/280 useless extension candidates. Maximal degree in co-relation 244. Up to 2 conditions per place. [2022-11-20 12:32:37,431 INFO L82 GeneralOperation]: Start removeDead. Operand has 315 places, 335 transitions, 686 flow [2022-11-20 12:32:37,438 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 290 places, 309 transitions, 630 flow [2022-11-20 12:32:37,448 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:32:37,455 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;@43048d1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:32:37,456 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2022-11-20 12:32:37,466 INFO L130 PetriNetUnfolder]: 2/48 cut-off events. [2022-11-20 12:32:37,466 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:32:37,466 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:32:37,467 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 12:32:37,468 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:32:37,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:37,473 INFO L85 PathProgramCache]: Analyzing trace with hash 774557976, now seen corresponding path program 1 times [2022-11-20 12:32:37,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:37,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057352441] [2022-11-20 12:32:37,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:37,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:37,624 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:32:37,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [214735301] [2022-11-20 12:32:37,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:37,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:32:37,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:32:37,630 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:32:37,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:32:37,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:37,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:32:37,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:32:38,169 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 12:32:38,170 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:32:38,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:38,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057352441] [2022-11-20 12:32:38,171 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:32:38,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214735301] [2022-11-20 12:32:38,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214735301] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:32:38,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:32:38,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:32:38,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202503768] [2022-11-20 12:32:38,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:32:38,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:32:38,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:38,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:32:38,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:32:38,286 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 335 [2022-11-20 12:32:38,294 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 309 transitions, 630 flow. Second operand has 7 states, 7 states have (on average 231.0) internal successors, (1617), 7 states have internal predecessors, (1617), 0 states have call successors, (0), 0 states 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 12:32:38,294 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:32:38,295 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 335 [2022-11-20 12:32:38,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:32:39,268 INFO L130 PetriNetUnfolder]: 26/606 cut-off events. [2022-11-20 12:32:39,268 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-11-20 12:32:39,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 777 conditions, 606 events. 26/606 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2212 event pairs, 4 based on Foata normal form. 38/537 useless extension candidates. Maximal degree in co-relation 525. Up to 67 conditions per place. [2022-11-20 12:32:39,275 INFO L137 encePairwiseOnDemand]: 302/335 looper letters, 104 selfloop transitions, 15 changer transitions 20/349 dead transitions. [2022-11-20 12:32:39,275 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 349 transitions, 1000 flow [2022-11-20 12:32:39,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 12:32:39,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 12:32:39,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3152 transitions. [2022-11-20 12:32:39,311 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7237657864523536 [2022-11-20 12:32:39,312 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3152 transitions. [2022-11-20 12:32:39,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3152 transitions. [2022-11-20 12:32:39,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:32:39,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3152 transitions. [2022-11-20 12:32:39,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 242.46153846153845) internal successors, (3152), 13 states have internal predecessors, (3152), 0 states have call successors, (0), 0 states 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 12:32:39,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 335.0) internal successors, (4690), 14 states have internal predecessors, (4690), 0 states have call successors, (0), 0 states 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 12:32:39,358 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 335.0) internal successors, (4690), 14 states have internal predecessors, (4690), 0 states have call successors, (0), 0 states 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 12:32:39,360 INFO L175 Difference]: Start difference. First operand has 290 places, 309 transitions, 630 flow. Second operand 13 states and 3152 transitions. [2022-11-20 12:32:39,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 349 transitions, 1000 flow [2022-11-20 12:32:39,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 349 transitions, 984 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:32:39,381 INFO L231 Difference]: Finished difference. Result has 298 places, 283 transitions, 613 flow [2022-11-20 12:32:39,383 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=613, PETRI_PLACES=298, PETRI_TRANSITIONS=283} [2022-11-20 12:32:39,390 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 8 predicate places. [2022-11-20 12:32:39,391 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 283 transitions, 613 flow [2022-11-20 12:32:39,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 231.0) internal successors, (1617), 7 states have internal predecessors, (1617), 0 states have call successors, (0), 0 states 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 12:32:39,392 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:32:39,394 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] [2022-11-20 12:32:39,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:32:39,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-20 12:32:39,607 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:32:39,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:39,608 INFO L85 PathProgramCache]: Analyzing trace with hash 873756140, now seen corresponding path program 1 times [2022-11-20 12:32:39,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:39,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003772495] [2022-11-20 12:32:39,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:39,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:39,637 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:32:39,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [491245511] [2022-11-20 12:32:39,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:39,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:32:39,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:32:39,640 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:32:39,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:32:39,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:39,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:32:39,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:32:39,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:32:39,845 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:32:39,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:39,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003772495] [2022-11-20 12:32:39,846 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:32:39,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491245511] [2022-11-20 12:32:39,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491245511] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:32:39,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:32:39,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:32:39,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755089685] [2022-11-20 12:32:39,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:32:39,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:32:39,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:39,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:32:39,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:32:39,852 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 335 [2022-11-20 12:32:39,854 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 283 transitions, 613 flow. Second operand has 4 states, 4 states have (on average 287.25) internal successors, (1149), 4 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states 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 12:32:39,855 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:32:39,855 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 335 [2022-11-20 12:32:39,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:32:40,123 INFO L130 PetriNetUnfolder]: 24/584 cut-off events. [2022-11-20 12:32:40,124 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-11-20 12:32:40,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 667 conditions, 584 events. 24/584 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2135 event pairs, 4 based on Foata normal form. 2/504 useless extension candidates. Maximal degree in co-relation 330. Up to 28 conditions per place. [2022-11-20 12:32:40,128 INFO L137 encePairwiseOnDemand]: 327/335 looper letters, 38 selfloop transitions, 6 changer transitions 0/295 dead transitions. [2022-11-20 12:32:40,128 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 295 transitions, 723 flow [2022-11-20 12:32:40,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:32:40,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:32:40,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1471 transitions. [2022-11-20 12:32:40,134 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8782089552238806 [2022-11-20 12:32:40,134 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1471 transitions. [2022-11-20 12:32:40,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1471 transitions. [2022-11-20 12:32:40,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:32:40,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1471 transitions. [2022-11-20 12:32:40,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 294.2) internal successors, (1471), 5 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states 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 12:32:40,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 335.0) internal successors, (2010), 6 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states 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 12:32:40,147 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 335.0) internal successors, (2010), 6 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states 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 12:32:40,148 INFO L175 Difference]: Start difference. First operand has 298 places, 283 transitions, 613 flow. Second operand 5 states and 1471 transitions. [2022-11-20 12:32:40,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 295 transitions, 723 flow [2022-11-20 12:32:40,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 295 transitions, 705 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-20 12:32:40,157 INFO L231 Difference]: Finished difference. Result has 284 places, 281 transitions, 597 flow [2022-11-20 12:32:40,158 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=597, PETRI_PLACES=284, PETRI_TRANSITIONS=281} [2022-11-20 12:32:40,159 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, -6 predicate places. [2022-11-20 12:32:40,159 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 281 transitions, 597 flow [2022-11-20 12:32:40,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 287.25) internal successors, (1149), 4 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states 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 12:32:40,161 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:32:40,161 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:32:40,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:32:40,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:32:40,368 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:32:40,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:40,370 INFO L85 PathProgramCache]: Analyzing trace with hash -881217779, now seen corresponding path program 1 times [2022-11-20 12:32:40,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:40,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872185011] [2022-11-20 12:32:40,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:40,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:40,399 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:32:40,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1377643332] [2022-11-20 12:32:40,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:40,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:32:40,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:32:40,401 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:32:40,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:32:40,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:40,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 12:32:40,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:32:41,482 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 12:32:41,482 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:32:41,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:41,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872185011] [2022-11-20 12:32:41,483 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:32:41,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377643332] [2022-11-20 12:32:41,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377643332] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:32:41,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:32:41,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 12:32:41,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401886139] [2022-11-20 12:32:41,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:32:41,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 12:32:41,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:41,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 12:32:41,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-11-20 12:32:41,491 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 335 [2022-11-20 12:32:41,496 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 281 transitions, 597 flow. Second operand has 13 states, 13 states have (on average 206.0) internal successors, (2678), 13 states have internal predecessors, (2678), 0 states have call successors, (0), 0 states 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 12:32:41,496 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:32:41,496 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 335 [2022-11-20 12:32:41,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:32:43,842 INFO L130 PetriNetUnfolder]: 46/605 cut-off events. [2022-11-20 12:32:43,842 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2022-11-20 12:32:43,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 842 conditions, 605 events. 46/605 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2461 event pairs, 26 based on Foata normal form. 1/524 useless extension candidates. Maximal degree in co-relation 418. Up to 92 conditions per place. [2022-11-20 12:32:43,846 INFO L137 encePairwiseOnDemand]: 318/335 looper letters, 139 selfloop transitions, 19 changer transitions 0/345 dead transitions. [2022-11-20 12:32:43,846 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 345 transitions, 1043 flow [2022-11-20 12:32:43,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 12:32:43,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-20 12:32:43,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4239 transitions. [2022-11-20 12:32:43,865 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6326865671641791 [2022-11-20 12:32:43,865 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4239 transitions. [2022-11-20 12:32:43,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4239 transitions. [2022-11-20 12:32:43,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:32:43,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4239 transitions. [2022-11-20 12:32:43,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 211.95) internal successors, (4239), 20 states have internal predecessors, (4239), 0 states have call successors, (0), 0 states 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 12:32:43,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 335.0) internal successors, (7035), 21 states have internal predecessors, (7035), 0 states have call successors, (0), 0 states 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 12:32:43,892 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 335.0) internal successors, (7035), 21 states have internal predecessors, (7035), 0 states have call successors, (0), 0 states 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 12:32:43,893 INFO L175 Difference]: Start difference. First operand has 284 places, 281 transitions, 597 flow. Second operand 20 states and 4239 transitions. [2022-11-20 12:32:43,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 345 transitions, 1043 flow [2022-11-20 12:32:43,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 345 transitions, 1031 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:32:43,900 INFO L231 Difference]: Finished difference. Result has 302 places, 284 transitions, 643 flow [2022-11-20 12:32:43,901 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=581, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=643, PETRI_PLACES=302, PETRI_TRANSITIONS=284} [2022-11-20 12:32:43,901 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 12 predicate places. [2022-11-20 12:32:43,902 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 284 transitions, 643 flow [2022-11-20 12:32:43,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 206.0) internal successors, (2678), 13 states have internal predecessors, (2678), 0 states have call successors, (0), 0 states 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 12:32:43,903 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:32:43,903 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:32:43,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:32:44,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:32:44,113 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:32:44,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:44,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1547946692, now seen corresponding path program 1 times [2022-11-20 12:32:44,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:44,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668110453] [2022-11-20 12:32:44,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:44,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:44,134 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:32:44,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1401918261] [2022-11-20 12:32:44,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:44,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:32:44,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:32:44,151 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:32:44,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:32:44,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:44,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 12:32:44,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:32:44,502 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 12:32:44,503 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:32:44,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:44,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668110453] [2022-11-20 12:32:44,503 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:32:44,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401918261] [2022-11-20 12:32:44,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401918261] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:32:44,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:32:44,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 12:32:44,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287421253] [2022-11-20 12:32:44,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:32:44,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:32:44,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:44,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:32:44,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:32:44,509 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 335 [2022-11-20 12:32:44,511 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 284 transitions, 643 flow. Second operand has 10 states, 10 states have (on average 208.5) internal successors, (2085), 10 states have internal predecessors, (2085), 0 states have call successors, (0), 0 states 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 12:32:44,511 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:32:44,511 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 335 [2022-11-20 12:32:44,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:32:45,504 INFO L130 PetriNetUnfolder]: 46/604 cut-off events. [2022-11-20 12:32:45,505 INFO L131 PetriNetUnfolder]: For 55/55 co-relation queries the response was YES. [2022-11-20 12:32:45,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 862 conditions, 604 events. 46/604 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2456 event pairs, 26 based on Foata normal form. 1/523 useless extension candidates. Maximal degree in co-relation 436. Up to 95 conditions per place. [2022-11-20 12:32:45,509 INFO L137 encePairwiseOnDemand]: 319/335 looper letters, 138 selfloop transitions, 17 changer transitions 0/344 dead transitions. [2022-11-20 12:32:45,509 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 344 transitions, 1075 flow [2022-11-20 12:32:45,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 12:32:45,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 12:32:45,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3864 transitions. [2022-11-20 12:32:45,519 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6407960199004975 [2022-11-20 12:32:45,520 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3864 transitions. [2022-11-20 12:32:45,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3864 transitions. [2022-11-20 12:32:45,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:32:45,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3864 transitions. [2022-11-20 12:32:45,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 214.66666666666666) internal successors, (3864), 18 states have internal predecessors, (3864), 0 states have call successors, (0), 0 states 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 12:32:45,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 335.0) internal successors, (6365), 19 states have internal predecessors, (6365), 0 states have call successors, (0), 0 states 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 12:32:45,545 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 335.0) internal successors, (6365), 19 states have internal predecessors, (6365), 0 states have call successors, (0), 0 states 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 12:32:45,545 INFO L175 Difference]: Start difference. First operand has 302 places, 284 transitions, 643 flow. Second operand 18 states and 3864 transitions. [2022-11-20 12:32:45,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 344 transitions, 1075 flow [2022-11-20 12:32:45,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 344 transitions, 1042 flow, removed 1 selfloop flow, removed 14 redundant places. [2022-11-20 12:32:45,554 INFO L231 Difference]: Finished difference. Result has 304 places, 283 transitions, 640 flow [2022-11-20 12:32:45,555 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=640, PETRI_PLACES=304, PETRI_TRANSITIONS=283} [2022-11-20 12:32:45,556 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 14 predicate places. [2022-11-20 12:32:45,556 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 283 transitions, 640 flow [2022-11-20 12:32:45,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 208.5) internal successors, (2085), 10 states have internal predecessors, (2085), 0 states have call successors, (0), 0 states 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 12:32:45,558 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:32:45,558 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:32:45,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:32:45,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:32:45,764 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:32:45,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:45,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1435173644, now seen corresponding path program 1 times [2022-11-20 12:32:45,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:45,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521265886] [2022-11-20 12:32:45,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:45,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:45,792 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:32:45,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [261393361] [2022-11-20 12:32:45,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:45,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:32:45,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:32:45,795 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:32:45,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 12:32:45,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:45,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:32:45,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:32:45,926 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 12:32:45,926 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:32:45,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:45,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521265886] [2022-11-20 12:32:45,927 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:32:45,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261393361] [2022-11-20 12:32:45,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261393361] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:32:45,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:32:45,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:32:45,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774944272] [2022-11-20 12:32:45,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:32:45,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:32:45,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:45,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:32:45,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:32:45,933 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 335 [2022-11-20 12:32:45,934 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 283 transitions, 640 flow. Second operand has 4 states, 4 states have (on average 276.5) internal successors, (1106), 4 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states 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 12:32:45,934 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:32:45,934 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 335 [2022-11-20 12:32:45,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:32:46,151 INFO L130 PetriNetUnfolder]: 26/830 cut-off events. [2022-11-20 12:32:46,151 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-11-20 12:32:46,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1027 conditions, 830 events. 26/830 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3824 event pairs, 0 based on Foata normal form. 0/724 useless extension candidates. Maximal degree in co-relation 475. Up to 79 conditions per place. [2022-11-20 12:32:46,155 INFO L137 encePairwiseOnDemand]: 315/335 looper letters, 56 selfloop transitions, 17 changer transitions 0/316 dead transitions. [2022-11-20 12:32:46,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 316 transitions, 856 flow [2022-11-20 12:32:46,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:32:46,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:32:46,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1451 transitions. [2022-11-20 12:32:46,159 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.866268656716418 [2022-11-20 12:32:46,160 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1451 transitions. [2022-11-20 12:32:46,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1451 transitions. [2022-11-20 12:32:46,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:32:46,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1451 transitions. [2022-11-20 12:32:46,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 290.2) internal successors, (1451), 5 states have internal predecessors, (1451), 0 states have call successors, (0), 0 states 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 12:32:46,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 335.0) internal successors, (2010), 6 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states 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 12:32:46,185 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 335.0) internal successors, (2010), 6 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states 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 12:32:46,185 INFO L175 Difference]: Start difference. First operand has 304 places, 283 transitions, 640 flow. Second operand 5 states and 1451 transitions. [2022-11-20 12:32:46,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 316 transitions, 856 flow [2022-11-20 12:32:46,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 316 transitions, 824 flow, removed 0 selfloop flow, removed 15 redundant places. [2022-11-20 12:32:46,192 INFO L231 Difference]: Finished difference. Result has 297 places, 297 transitions, 738 flow [2022-11-20 12:32:46,193 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=738, PETRI_PLACES=297, PETRI_TRANSITIONS=297} [2022-11-20 12:32:46,194 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 7 predicate places. [2022-11-20 12:32:46,196 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 297 transitions, 738 flow [2022-11-20 12:32:46,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 276.5) internal successors, (1106), 4 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states 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 12:32:46,198 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:32:46,199 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:32:46,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:32:46,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:32:46,405 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:32:46,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:46,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1540709418, now seen corresponding path program 1 times [2022-11-20 12:32:46,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:46,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928010278] [2022-11-20 12:32:46,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:46,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:46,425 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:32:46,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [891390114] [2022-11-20 12:32:46,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:46,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:32:46,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:32:46,426 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:32:46,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 12:32:46,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:46,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:32:46,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:32:46,549 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 12:32:46,549 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:32:46,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:46,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928010278] [2022-11-20 12:32:46,550 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:32:46,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891390114] [2022-11-20 12:32:46,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891390114] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:32:46,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:32:46,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:32:46,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525354441] [2022-11-20 12:32:46,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:32:46,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:32:46,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:46,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:32:46,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:32:46,553 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 335 [2022-11-20 12:32:46,554 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 297 transitions, 738 flow. Second operand has 4 states, 4 states have (on average 276.75) internal successors, (1107), 4 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:46,554 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:32:46,554 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 335 [2022-11-20 12:32:46,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:32:46,737 INFO L130 PetriNetUnfolder]: 26/818 cut-off events. [2022-11-20 12:32:46,737 INFO L131 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2022-11-20 12:32:46,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1075 conditions, 818 events. 26/818 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3744 event pairs, 0 based on Foata normal form. 12/742 useless extension candidates. Maximal degree in co-relation 595. Up to 70 conditions per place. [2022-11-20 12:32:46,742 INFO L137 encePairwiseOnDemand]: 321/335 looper letters, 29 selfloop transitions, 19 changer transitions 0/291 dead transitions. [2022-11-20 12:32:46,743 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 291 transitions, 804 flow [2022-11-20 12:32:46,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:32:46,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:32:46,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1140 transitions. [2022-11-20 12:32:46,746 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8507462686567164 [2022-11-20 12:32:46,746 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1140 transitions. [2022-11-20 12:32:46,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1140 transitions. [2022-11-20 12:32:46,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:32:46,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1140 transitions. [2022-11-20 12:32:46,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:46,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 335.0) internal successors, (1675), 5 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states 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 12:32:46,753 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 335.0) internal successors, (1675), 5 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states 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 12:32:46,753 INFO L175 Difference]: Start difference. First operand has 297 places, 297 transitions, 738 flow. Second operand 4 states and 1140 transitions. [2022-11-20 12:32:46,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 291 transitions, 804 flow [2022-11-20 12:32:46,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 291 transitions, 788 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:32:46,763 INFO L231 Difference]: Finished difference. Result has 295 places, 291 transitions, 730 flow [2022-11-20 12:32:46,764 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=730, PETRI_PLACES=295, PETRI_TRANSITIONS=291} [2022-11-20 12:32:46,767 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 5 predicate places. [2022-11-20 12:32:46,767 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 291 transitions, 730 flow [2022-11-20 12:32:46,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 276.75) internal successors, (1107), 4 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:32:46,768 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:32:46,768 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:32:46,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 12:32:46,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:32:46,981 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:32:46,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:46,981 INFO L85 PathProgramCache]: Analyzing trace with hash -373525375, now seen corresponding path program 1 times [2022-11-20 12:32:46,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:46,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211465] [2022-11-20 12:32:46,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:46,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:47,002 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:32:47,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1511169976] [2022-11-20 12:32:47,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:47,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:32:47,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:32:47,018 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:32:47,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 12:32:47,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:47,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:32:47,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:32:47,154 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:32:47,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:32:47,208 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:32:47,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:47,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211465] [2022-11-20 12:32:47,209 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:32:47,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511169976] [2022-11-20 12:32:47,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511169976] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:32:47,209 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:32:47,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-11-20 12:32:47,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667184590] [2022-11-20 12:32:47,210 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:32:47,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:32:47,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:47,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:32:47,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:32:47,213 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 335 [2022-11-20 12:32:47,216 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 291 transitions, 730 flow. Second operand has 10 states, 10 states have (on average 277.5) internal successors, (2775), 10 states have internal predecessors, (2775), 0 states have call successors, (0), 0 states 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 12:32:47,216 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:32:47,216 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 335 [2022-11-20 12:32:47,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:32:47,761 INFO L130 PetriNetUnfolder]: 62/1766 cut-off events. [2022-11-20 12:32:47,761 INFO L131 PetriNetUnfolder]: For 232/232 co-relation queries the response was YES. [2022-11-20 12:32:47,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2333 conditions, 1766 events. 62/1766 cut-off events. For 232/232 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 11597 event pairs, 0 based on Foata normal form. 18/1564 useless extension candidates. Maximal degree in co-relation 1134. Up to 67 conditions per place. [2022-11-20 12:32:47,771 INFO L137 encePairwiseOnDemand]: 315/335 looper letters, 104 selfloop transitions, 50 changer transitions 0/397 dead transitions. [2022-11-20 12:32:47,772 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 397 transitions, 1368 flow [2022-11-20 12:32:47,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:32:47,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-20 12:32:47,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 4013 transitions. [2022-11-20 12:32:47,780 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8556503198294243 [2022-11-20 12:32:47,780 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 4013 transitions. [2022-11-20 12:32:47,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 4013 transitions. [2022-11-20 12:32:47,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:32:47,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 4013 transitions. [2022-11-20 12:32:47,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 286.64285714285717) internal successors, (4013), 14 states have internal predecessors, (4013), 0 states have call successors, (0), 0 states 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 12:32:47,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 335.0) internal successors, (5025), 15 states have internal predecessors, (5025), 0 states have call successors, (0), 0 states 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 12:32:47,800 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 335.0) internal successors, (5025), 15 states have internal predecessors, (5025), 0 states have call successors, (0), 0 states 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 12:32:47,800 INFO L175 Difference]: Start difference. First operand has 295 places, 291 transitions, 730 flow. Second operand 14 states and 4013 transitions. [2022-11-20 12:32:47,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 397 transitions, 1368 flow [2022-11-20 12:32:47,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 397 transitions, 1288 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:32:47,808 INFO L231 Difference]: Finished difference. Result has 309 places, 324 transitions, 993 flow [2022-11-20 12:32:47,809 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=993, PETRI_PLACES=309, PETRI_TRANSITIONS=324} [2022-11-20 12:32:47,810 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 19 predicate places. [2022-11-20 12:32:47,810 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 324 transitions, 993 flow [2022-11-20 12:32:47,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 277.5) internal successors, (2775), 10 states have internal predecessors, (2775), 0 states have call successors, (0), 0 states 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 12:32:47,811 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:32:47,811 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:32:47,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 12:32:48,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 12:32:48,017 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:32:48,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:48,018 INFO L85 PathProgramCache]: Analyzing trace with hash -367726028, now seen corresponding path program 2 times [2022-11-20 12:32:48,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:48,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268832639] [2022-11-20 12:32:48,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:48,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:48,039 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:32:48,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [269741836] [2022-11-20 12:32:48,040 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:32:48,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:32:48,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:32:48,041 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:32:48,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 12:32:48,141 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:32:48,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:32:48,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:32:48,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:32:50,560 WARN L859 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~N~0 ~M~0))) (and (<= .cse0 2147483647) (<= (+ |c_ULTIMATE.start_create_fresh_int_array_~i~3#1| 1) .cse0)))) is different from true [2022-11-20 12:32:52,087 WARN L859 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~N~0 ~M~0))) (and (<= .cse0 2147483647) (<= (+ |c_ULTIMATE.start_create_fresh_int_array_#t~post27#1| 1) .cse0)))) is different from true [2022-11-20 12:32:52,088 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 20 not checked. [2022-11-20 12:32:52,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:33:17,053 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 12:33:17,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:33:17,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268832639] [2022-11-20 12:33:17,054 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:33:17,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269741836] [2022-11-20 12:33:17,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269741836] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:33:17,054 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:33:17,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-20 12:33:17,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780845576] [2022-11-20 12:33:17,055 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:33:17,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 12:33:17,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:33:17,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 12:33:17,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=78, Unknown=14, NotChecked=38, Total=156 [2022-11-20 12:33:17,059 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 335 [2022-11-20 12:33:17,062 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 324 transitions, 993 flow. Second operand has 13 states, 13 states have (on average 216.69230769230768) internal successors, (2817), 13 states have internal predecessors, (2817), 0 states have call successors, (0), 0 states 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 12:33:17,062 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:33:17,062 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 335 [2022-11-20 12:33:17,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:33:35,091 WARN L233 SmtUtils]: Spent 7.69s on a formula simplification. DAG size of input: 17 DAG size of output: 16 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:33:54,474 INFO L130 PetriNetUnfolder]: 812/4184 cut-off events. [2022-11-20 12:33:54,475 INFO L131 PetriNetUnfolder]: For 527/527 co-relation queries the response was YES. [2022-11-20 12:33:54,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6365 conditions, 4184 events. 812/4184 cut-off events. For 527/527 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 35599 event pairs, 410 based on Foata normal form. 2/3166 useless extension candidates. Maximal degree in co-relation 5028. Up to 1325 conditions per place. [2022-11-20 12:33:54,502 INFO L137 encePairwiseOnDemand]: 310/335 looper letters, 142 selfloop transitions, 37 changer transitions 0/365 dead transitions. [2022-11-20 12:33:54,502 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 365 transitions, 1433 flow [2022-11-20 12:33:54,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 12:33:54,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 12:33:54,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2909 transitions. [2022-11-20 12:33:54,509 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6679678530424799 [2022-11-20 12:33:54,509 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2909 transitions. [2022-11-20 12:33:54,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2909 transitions. [2022-11-20 12:33:54,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:33:54,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2909 transitions. [2022-11-20 12:33:54,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 223.76923076923077) internal successors, (2909), 13 states have internal predecessors, (2909), 0 states have call successors, (0), 0 states 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 12:33:54,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 335.0) internal successors, (4690), 14 states have internal predecessors, (4690), 0 states have call successors, (0), 0 states 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 12:33:54,526 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 335.0) internal successors, (4690), 14 states have internal predecessors, (4690), 0 states have call successors, (0), 0 states 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 12:33:54,526 INFO L175 Difference]: Start difference. First operand has 309 places, 324 transitions, 993 flow. Second operand 13 states and 2909 transitions. [2022-11-20 12:33:54,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 365 transitions, 1433 flow [2022-11-20 12:33:54,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 365 transitions, 1317 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-11-20 12:33:54,536 INFO L231 Difference]: Finished difference. Result has 317 places, 327 transitions, 984 flow [2022-11-20 12:33:54,537 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=867, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=984, PETRI_PLACES=317, PETRI_TRANSITIONS=327} [2022-11-20 12:33:54,539 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 27 predicate places. [2022-11-20 12:33:54,540 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 327 transitions, 984 flow [2022-11-20 12:33:54,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 216.69230769230768) internal successors, (2817), 13 states have internal predecessors, (2817), 0 states have call successors, (0), 0 states 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 12:33:54,541 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:33:54,541 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:33:54,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 12:33:54,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-20 12:33:54,752 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:33:54,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:33:54,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1657230818, now seen corresponding path program 1 times [2022-11-20 12:33:54,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:33:54,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145082844] [2022-11-20 12:33:54,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:33:54,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:33:54,771 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:33:54,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [345484967] [2022-11-20 12:33:54,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:33:54,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:33:54,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:33:54,773 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:33:54,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 12:33:54,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:33:54,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:33:54,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:33:55,052 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 12:33:55,052 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:33:55,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:33:55,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145082844] [2022-11-20 12:33:55,052 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:33:55,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345484967] [2022-11-20 12:33:55,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345484967] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:33:55,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:33:55,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:33:55,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118202821] [2022-11-20 12:33:55,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:33:55,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:33:55,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:33:55,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:33:55,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:33:55,058 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 335 [2022-11-20 12:33:55,060 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 327 transitions, 984 flow. Second operand has 7 states, 7 states have (on average 269.42857142857144) internal successors, (1886), 7 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states 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 12:33:55,060 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:33:55,060 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 335 [2022-11-20 12:33:55,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:33:56,275 INFO L130 PetriNetUnfolder]: 330/5172 cut-off events. [2022-11-20 12:33:56,275 INFO L131 PetriNetUnfolder]: For 736/736 co-relation queries the response was YES. [2022-11-20 12:33:56,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7091 conditions, 5172 events. 330/5172 cut-off events. For 736/736 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 47337 event pairs, 126 based on Foata normal form. 0/4382 useless extension candidates. Maximal degree in co-relation 5518. Up to 341 conditions per place. [2022-11-20 12:33:56,312 INFO L137 encePairwiseOnDemand]: 319/335 looper letters, 146 selfloop transitions, 34 changer transitions 0/423 dead transitions. [2022-11-20 12:33:56,312 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 423 transitions, 1695 flow [2022-11-20 12:33:56,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 12:33:56,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-20 12:33:56,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4119 transitions. [2022-11-20 12:33:56,322 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8197014925373134 [2022-11-20 12:33:56,322 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4119 transitions. [2022-11-20 12:33:56,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4119 transitions. [2022-11-20 12:33:56,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:33:56,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4119 transitions. [2022-11-20 12:33:56,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 274.6) internal successors, (4119), 15 states have internal predecessors, (4119), 0 states have call successors, (0), 0 states 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 12:33:56,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 335.0) internal successors, (5360), 16 states have internal predecessors, (5360), 0 states have call successors, (0), 0 states 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 12:33:56,376 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 335.0) internal successors, (5360), 16 states have internal predecessors, (5360), 0 states have call successors, (0), 0 states 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 12:33:56,376 INFO L175 Difference]: Start difference. First operand has 317 places, 327 transitions, 984 flow. Second operand 15 states and 4119 transitions. [2022-11-20 12:33:56,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 423 transitions, 1695 flow [2022-11-20 12:33:56,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 423 transitions, 1646 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-20 12:33:56,387 INFO L231 Difference]: Finished difference. Result has 330 places, 349 transitions, 1153 flow [2022-11-20 12:33:56,388 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=940, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1153, PETRI_PLACES=330, PETRI_TRANSITIONS=349} [2022-11-20 12:33:56,389 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 40 predicate places. [2022-11-20 12:33:56,389 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 349 transitions, 1153 flow [2022-11-20 12:33:56,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 269.42857142857144) internal successors, (1886), 7 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states 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 12:33:56,390 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:33:56,390 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:33:56,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 12:33:56,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-20 12:33:56,596 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:33:56,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:33:56,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1823949986, now seen corresponding path program 1 times [2022-11-20 12:33:56,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:33:56,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901798395] [2022-11-20 12:33:56,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:33:56,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:33:56,628 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:33:56,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [748341132] [2022-11-20 12:33:56,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:33:56,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:33:56,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:33:56,633 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:33:56,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 12:33:56,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:33:56,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:33:56,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:33:56,807 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 12:33:56,807 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:33:56,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:33:56,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901798395] [2022-11-20 12:33:56,807 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:33:56,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748341132] [2022-11-20 12:33:56,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748341132] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:33:56,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:33:56,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:33:56,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508755784] [2022-11-20 12:33:56,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:33:56,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:33:56,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:33:56,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:33:56,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:33:56,811 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 335 [2022-11-20 12:33:56,812 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 349 transitions, 1153 flow. Second operand has 5 states, 5 states have (on average 275.6) internal successors, (1378), 5 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states 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 12:33:56,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:33:56,812 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 335 [2022-11-20 12:33:56,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:33:58,224 INFO L130 PetriNetUnfolder]: 506/5730 cut-off events. [2022-11-20 12:33:58,224 INFO L131 PetriNetUnfolder]: For 1021/1021 co-relation queries the response was YES. [2022-11-20 12:33:58,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8272 conditions, 5730 events. 506/5730 cut-off events. For 1021/1021 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 56133 event pairs, 318 based on Foata normal form. 0/4984 useless extension candidates. Maximal degree in co-relation 8131. Up to 1169 conditions per place. [2022-11-20 12:33:58,260 INFO L137 encePairwiseOnDemand]: 328/335 looper letters, 46 selfloop transitions, 6 changer transitions 0/362 dead transitions. [2022-11-20 12:33:58,261 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 362 transitions, 1288 flow [2022-11-20 12:33:58,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:33:58,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:33:58,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1685 transitions. [2022-11-20 12:33:58,263 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8383084577114428 [2022-11-20 12:33:58,264 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1685 transitions. [2022-11-20 12:33:58,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1685 transitions. [2022-11-20 12:33:58,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:33:58,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1685 transitions. [2022-11-20 12:33:58,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 280.8333333333333) internal successors, (1685), 6 states have internal predecessors, (1685), 0 states have call successors, (0), 0 states 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 12:33:58,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 335.0) internal successors, (2345), 7 states have internal predecessors, (2345), 0 states have call successors, (0), 0 states 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 12:33:58,272 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 335.0) internal successors, (2345), 7 states have internal predecessors, (2345), 0 states have call successors, (0), 0 states 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 12:33:58,272 INFO L175 Difference]: Start difference. First operand has 330 places, 349 transitions, 1153 flow. Second operand 6 states and 1685 transitions. [2022-11-20 12:33:58,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 362 transitions, 1288 flow [2022-11-20 12:33:58,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 362 transitions, 1288 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:33:58,283 INFO L231 Difference]: Finished difference. Result has 338 places, 352 transitions, 1185 flow [2022-11-20 12:33:58,285 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=1153, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1185, PETRI_PLACES=338, PETRI_TRANSITIONS=352} [2022-11-20 12:33:58,286 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 48 predicate places. [2022-11-20 12:33:58,286 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 352 transitions, 1185 flow [2022-11-20 12:33:58,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 275.6) internal successors, (1378), 5 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states 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 12:33:58,287 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:33:58,287 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:33:58,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 12:33:58,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 12:33:58,493 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:33:58,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:33:58,493 INFO L85 PathProgramCache]: Analyzing trace with hash -775630940, now seen corresponding path program 1 times [2022-11-20 12:33:58,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:33:58,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168968157] [2022-11-20 12:33:58,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:33:58,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:33:58,535 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:33:58,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [481891839] [2022-11-20 12:33:58,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:33:58,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:33:58,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:33:58,539 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:33:58,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 12:33:58,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:33:58,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:33:58,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:33:58,799 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-11-20 12:33:58,800 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:33:58,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:33:58,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168968157] [2022-11-20 12:33:58,800 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:33:58,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481891839] [2022-11-20 12:33:58,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481891839] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:33:58,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:33:58,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 12:33:58,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388145940] [2022-11-20 12:33:58,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:33:58,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:33:58,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:33:58,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:33:58,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:33:58,805 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 335 [2022-11-20 12:33:58,807 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 352 transitions, 1185 flow. Second operand has 9 states, 9 states have (on average 273.44444444444446) internal successors, (2461), 9 states have internal predecessors, (2461), 0 states have call successors, (0), 0 states 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 12:33:58,807 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:33:58,807 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 335 [2022-11-20 12:33:58,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:34:00,166 INFO L130 PetriNetUnfolder]: 206/4472 cut-off events. [2022-11-20 12:34:00,166 INFO L131 PetriNetUnfolder]: For 1472/1486 co-relation queries the response was YES. [2022-11-20 12:34:00,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6545 conditions, 4472 events. 206/4472 cut-off events. For 1472/1486 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 38945 event pairs, 50 based on Foata normal form. 16/4010 useless extension candidates. Maximal degree in co-relation 6440. Up to 271 conditions per place. [2022-11-20 12:34:00,197 INFO L137 encePairwiseOnDemand]: 319/335 looper letters, 118 selfloop transitions, 28 changer transitions 0/400 dead transitions. [2022-11-20 12:34:00,197 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 400 transitions, 1651 flow [2022-11-20 12:34:00,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:34:00,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-20 12:34:00,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3896 transitions. [2022-11-20 12:34:00,202 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8307036247334755 [2022-11-20 12:34:00,202 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3896 transitions. [2022-11-20 12:34:00,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3896 transitions. [2022-11-20 12:34:00,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:34:00,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3896 transitions. [2022-11-20 12:34:00,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 278.2857142857143) internal successors, (3896), 14 states have internal predecessors, (3896), 0 states have call successors, (0), 0 states 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 12:34:00,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 335.0) internal successors, (5025), 15 states have internal predecessors, (5025), 0 states have call successors, (0), 0 states 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 12:34:00,218 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 335.0) internal successors, (5025), 15 states have internal predecessors, (5025), 0 states have call successors, (0), 0 states 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 12:34:00,218 INFO L175 Difference]: Start difference. First operand has 338 places, 352 transitions, 1185 flow. Second operand 14 states and 3896 transitions. [2022-11-20 12:34:00,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 400 transitions, 1651 flow [2022-11-20 12:34:00,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 400 transitions, 1625 flow, removed 10 selfloop flow, removed 4 redundant places. [2022-11-20 12:34:00,233 INFO L231 Difference]: Finished difference. Result has 347 places, 348 transitions, 1204 flow [2022-11-20 12:34:00,233 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=1120, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1204, PETRI_PLACES=347, PETRI_TRANSITIONS=348} [2022-11-20 12:34:00,234 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 57 predicate places. [2022-11-20 12:34:00,234 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 348 transitions, 1204 flow [2022-11-20 12:34:00,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 273.44444444444446) internal successors, (2461), 9 states have internal predecessors, (2461), 0 states have call successors, (0), 0 states 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 12:34:00,235 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:34:00,236 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:34:00,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 12:34:00,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:34:00,443 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:34:00,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:00,443 INFO L85 PathProgramCache]: Analyzing trace with hash -12098358, now seen corresponding path program 1 times [2022-11-20 12:34:00,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:00,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717689409] [2022-11-20 12:34:00,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:00,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:00,478 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:34:00,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [283102101] [2022-11-20 12:34:00,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:00,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:34:00,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:34:00,486 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:34:00,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 12:34:00,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:00,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:34:00,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:34:00,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:34:00,631 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:34:00,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:00,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717689409] [2022-11-20 12:34:00,632 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:34:00,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283102101] [2022-11-20 12:34:00,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283102101] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:00,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:00,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:34:00,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015328663] [2022-11-20 12:34:00,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:00,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:34:00,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:00,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:34:00,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:34:00,635 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 335 [2022-11-20 12:34:00,636 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 348 transitions, 1204 flow. Second operand has 4 states, 4 states have (on average 300.75) internal successors, (1203), 4 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states 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 12:34:00,636 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:34:00,636 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 335 [2022-11-20 12:34:00,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:34:01,789 INFO L130 PetriNetUnfolder]: 544/5724 cut-off events. [2022-11-20 12:34:01,789 INFO L131 PetriNetUnfolder]: For 851/851 co-relation queries the response was YES. [2022-11-20 12:34:01,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8855 conditions, 5724 events. 544/5724 cut-off events. For 851/851 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 55469 event pairs, 180 based on Foata normal form. 0/5120 useless extension candidates. Maximal degree in co-relation 7678. Up to 677 conditions per place. [2022-11-20 12:34:01,824 INFO L137 encePairwiseOnDemand]: 329/335 looper letters, 26 selfloop transitions, 8 changer transitions 0/363 dead transitions. [2022-11-20 12:34:01,824 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 363 transitions, 1311 flow [2022-11-20 12:34:01,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:34:01,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:34:01,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1527 transitions. [2022-11-20 12:34:01,827 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9116417910447762 [2022-11-20 12:34:01,827 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1527 transitions. [2022-11-20 12:34:01,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1527 transitions. [2022-11-20 12:34:01,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:34:01,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1527 transitions. [2022-11-20 12:34:01,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 305.4) internal successors, (1527), 5 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states 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 12:34:01,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 335.0) internal successors, (2010), 6 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states 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 12:34:01,833 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 335.0) internal successors, (2010), 6 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states 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 12:34:01,833 INFO L175 Difference]: Start difference. First operand has 347 places, 348 transitions, 1204 flow. Second operand 5 states and 1527 transitions. [2022-11-20 12:34:01,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 363 transitions, 1311 flow [2022-11-20 12:34:01,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 363 transitions, 1263 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-20 12:34:01,846 INFO L231 Difference]: Finished difference. Result has 346 places, 352 transitions, 1206 flow [2022-11-20 12:34:01,847 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=1156, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1206, PETRI_PLACES=346, PETRI_TRANSITIONS=352} [2022-11-20 12:34:01,848 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 56 predicate places. [2022-11-20 12:34:01,848 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 352 transitions, 1206 flow [2022-11-20 12:34:01,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 300.75) internal successors, (1203), 4 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states 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 12:34:01,848 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:34:01,849 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:34:01,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-20 12:34:02,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:34:02,055 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:34:02,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:02,055 INFO L85 PathProgramCache]: Analyzing trace with hash -152607381, now seen corresponding path program 1 times [2022-11-20 12:34:02,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:02,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562269103] [2022-11-20 12:34:02,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:02,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:02,072 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:34:02,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [454249990] [2022-11-20 12:34:02,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:02,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:34:02,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:34:02,080 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:34:02,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-20 12:34:02,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:02,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:34:02,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:34:02,352 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 12:34:02,353 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:34:02,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:02,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562269103] [2022-11-20 12:34:02,353 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:34:02,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454249990] [2022-11-20 12:34:02,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454249990] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:02,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:02,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:34:02,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515507863] [2022-11-20 12:34:02,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:02,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:34:02,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:02,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:34:02,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:34:02,358 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 335 [2022-11-20 12:34:02,360 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 352 transitions, 1206 flow. Second operand has 4 states, 4 states have (on average 300.5) internal successors, (1202), 4 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states 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 12:34:02,360 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:34:02,360 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 335 [2022-11-20 12:34:02,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:34:03,325 INFO L130 PetriNetUnfolder]: 120/4758 cut-off events. [2022-11-20 12:34:03,325 INFO L131 PetriNetUnfolder]: For 821/839 co-relation queries the response was YES. [2022-11-20 12:34:03,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6750 conditions, 4758 events. 120/4758 cut-off events. For 821/839 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 43219 event pairs, 0 based on Foata normal form. 0/4368 useless extension candidates. Maximal degree in co-relation 5750. Up to 302 conditions per place. [2022-11-20 12:34:03,350 INFO L137 encePairwiseOnDemand]: 329/335 looper letters, 24 selfloop transitions, 5 changer transitions 0/363 dead transitions. [2022-11-20 12:34:03,350 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 363 transitions, 1290 flow [2022-11-20 12:34:03,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:34:03,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:34:03,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1525 transitions. [2022-11-20 12:34:03,356 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9104477611940298 [2022-11-20 12:34:03,356 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1525 transitions. [2022-11-20 12:34:03,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1525 transitions. [2022-11-20 12:34:03,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:34:03,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1525 transitions. [2022-11-20 12:34:03,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 305.0) internal successors, (1525), 5 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states 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 12:34:03,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 335.0) internal successors, (2010), 6 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states 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 12:34:03,362 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 335.0) internal successors, (2010), 6 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states 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 12:34:03,362 INFO L175 Difference]: Start difference. First operand has 346 places, 352 transitions, 1206 flow. Second operand 5 states and 1525 transitions. [2022-11-20 12:34:03,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 363 transitions, 1290 flow [2022-11-20 12:34:03,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 363 transitions, 1290 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:34:03,377 INFO L231 Difference]: Finished difference. Result has 354 places, 355 transitions, 1240 flow [2022-11-20 12:34:03,378 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=1206, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1240, PETRI_PLACES=354, PETRI_TRANSITIONS=355} [2022-11-20 12:34:03,379 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 64 predicate places. [2022-11-20 12:34:03,380 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 355 transitions, 1240 flow [2022-11-20 12:34:03,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 300.5) internal successors, (1202), 4 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states 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 12:34:03,380 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:34:03,380 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:34:03,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-20 12:34:03,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:34:03,586 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:34:03,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:03,587 INFO L85 PathProgramCache]: Analyzing trace with hash -375048270, now seen corresponding path program 1 times [2022-11-20 12:34:03,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:03,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80676447] [2022-11-20 12:34:03,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:03,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:03,616 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:34:03,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [532191123] [2022-11-20 12:34:03,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:03,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:34:03,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:34:03,618 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:34:03,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-20 12:34:03,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:03,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:34:03,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:34:03,785 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:34:03,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:34:03,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:03,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80676447] [2022-11-20 12:34:03,786 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:34:03,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532191123] [2022-11-20 12:34:03,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532191123] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:03,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:03,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:34:03,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319714422] [2022-11-20 12:34:03,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:03,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:34:03,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:03,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:34:03,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:34:03,789 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 335 [2022-11-20 12:34:03,790 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 355 transitions, 1240 flow. Second operand has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states 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 12:34:03,790 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:34:03,790 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 335 [2022-11-20 12:34:03,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:34:04,797 INFO L130 PetriNetUnfolder]: 548/6460 cut-off events. [2022-11-20 12:34:04,797 INFO L131 PetriNetUnfolder]: For 1439/1507 co-relation queries the response was YES. [2022-11-20 12:34:04,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10217 conditions, 6460 events. 548/6460 cut-off events. For 1439/1507 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 64810 event pairs, 176 based on Foata normal form. 72/5936 useless extension candidates. Maximal degree in co-relation 8321. Up to 760 conditions per place. [2022-11-20 12:34:04,846 INFO L137 encePairwiseOnDemand]: 331/335 looper letters, 15 selfloop transitions, 8 changer transitions 0/355 dead transitions. [2022-11-20 12:34:04,846 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 355 transitions, 1282 flow [2022-11-20 12:34:04,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:34:04,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:34:04,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1214 transitions. [2022-11-20 12:34:04,849 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9059701492537313 [2022-11-20 12:34:04,849 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1214 transitions. [2022-11-20 12:34:04,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1214 transitions. [2022-11-20 12:34:04,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:34:04,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1214 transitions. [2022-11-20 12:34:04,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 303.5) internal successors, (1214), 4 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states 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 12:34:04,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 335.0) internal successors, (1675), 5 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states 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 12:34:04,855 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 335.0) internal successors, (1675), 5 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states 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 12:34:04,855 INFO L175 Difference]: Start difference. First operand has 354 places, 355 transitions, 1240 flow. Second operand 4 states and 1214 transitions. [2022-11-20 12:34:04,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 355 transitions, 1282 flow [2022-11-20 12:34:04,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 355 transitions, 1272 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:34:04,879 INFO L231 Difference]: Finished difference. Result has 354 places, 353 transitions, 1236 flow [2022-11-20 12:34:04,880 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=1220, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1236, PETRI_PLACES=354, PETRI_TRANSITIONS=353} [2022-11-20 12:34:04,880 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 64 predicate places. [2022-11-20 12:34:04,881 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 353 transitions, 1236 flow [2022-11-20 12:34:04,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states 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 12:34:04,881 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:34:04,881 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:34:04,888 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-11-20 12:34:05,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 12:34:05,088 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:34:05,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:05,088 INFO L85 PathProgramCache]: Analyzing trace with hash -435860741, now seen corresponding path program 1 times [2022-11-20 12:34:05,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:05,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147922713] [2022-11-20 12:34:05,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:05,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:05,119 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:34:05,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [660380700] [2022-11-20 12:34:05,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:05,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:34:05,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:34:05,122 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:34:05,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-20 12:34:05,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:05,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:34:05,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:34:05,329 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 12:34:05,330 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:34:05,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:05,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147922713] [2022-11-20 12:34:05,330 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:34:05,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660380700] [2022-11-20 12:34:05,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660380700] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:05,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:05,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:34:05,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049832325] [2022-11-20 12:34:05,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:05,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:34:05,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:05,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:34:05,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:34:05,334 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 335 [2022-11-20 12:34:05,336 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 353 transitions, 1236 flow. Second operand has 4 states, 4 states have (on average 300.75) internal successors, (1203), 4 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states 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 12:34:05,336 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:34:05,336 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 335 [2022-11-20 12:34:05,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:34:06,152 INFO L130 PetriNetUnfolder]: 120/4682 cut-off events. [2022-11-20 12:34:06,152 INFO L131 PetriNetUnfolder]: For 1095/1113 co-relation queries the response was YES. [2022-11-20 12:34:06,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6842 conditions, 4682 events. 120/4682 cut-off events. For 1095/1113 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 42238 event pairs, 0 based on Foata normal form. 40/4392 useless extension candidates. Maximal degree in co-relation 5856. Up to 320 conditions per place. [2022-11-20 12:34:06,174 INFO L137 encePairwiseOnDemand]: 331/335 looper letters, 14 selfloop transitions, 5 changer transitions 0/351 dead transitions. [2022-11-20 12:34:06,175 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 351 transitions, 1264 flow [2022-11-20 12:34:06,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:34:06,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:34:06,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1212 transitions. [2022-11-20 12:34:06,178 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9044776119402985 [2022-11-20 12:34:06,178 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1212 transitions. [2022-11-20 12:34:06,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1212 transitions. [2022-11-20 12:34:06,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:34:06,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1212 transitions. [2022-11-20 12:34:06,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states 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 12:34:06,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 335.0) internal successors, (1675), 5 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states 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 12:34:06,182 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 335.0) internal successors, (1675), 5 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states 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 12:34:06,182 INFO L175 Difference]: Start difference. First operand has 354 places, 353 transitions, 1236 flow. Second operand 4 states and 1212 transitions. [2022-11-20 12:34:06,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 351 transitions, 1264 flow [2022-11-20 12:34:06,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 351 transitions, 1244 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:34:06,198 INFO L231 Difference]: Finished difference. Result has 351 places, 351 transitions, 1216 flow [2022-11-20 12:34:06,198 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=1206, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1216, PETRI_PLACES=351, PETRI_TRANSITIONS=351} [2022-11-20 12:34:06,199 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 61 predicate places. [2022-11-20 12:34:06,199 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 351 transitions, 1216 flow [2022-11-20 12:34:06,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 300.75) internal successors, (1203), 4 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states 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 12:34:06,200 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:34:06,200 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:34:06,206 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-11-20 12:34:06,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-20 12:34:06,406 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:34:06,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:06,406 INFO L85 PathProgramCache]: Analyzing trace with hash 2044303991, now seen corresponding path program 1 times [2022-11-20 12:34:06,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:06,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538237491] [2022-11-20 12:34:06,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:06,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:06,434 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:34:06,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1368207011] [2022-11-20 12:34:06,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:06,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:34:06,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:34:06,436 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:34:06,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-20 12:34:06,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:06,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 12:34:06,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:34:06,831 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-20 12:34:06,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:34:07,160 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-20 12:34:07,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:07,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538237491] [2022-11-20 12:34:07,160 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:34:07,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368207011] [2022-11-20 12:34:07,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368207011] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:34:07,160 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:34:07,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2022-11-20 12:34:07,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557299066] [2022-11-20 12:34:07,161 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:34:07,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 12:34:07,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:07,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 12:34:07,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2022-11-20 12:34:07,166 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 335 [2022-11-20 12:34:07,169 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 351 transitions, 1216 flow. Second operand has 21 states, 21 states have (on average 259.04761904761904) internal successors, (5440), 21 states have internal predecessors, (5440), 0 states have call successors, (0), 0 states 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 12:34:07,169 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:34:07,170 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 335 [2022-11-20 12:34:07,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:34:09,695 INFO L130 PetriNetUnfolder]: 340/7786 cut-off events. [2022-11-20 12:34:09,696 INFO L131 PetriNetUnfolder]: For 2202/2218 co-relation queries the response was YES. [2022-11-20 12:34:09,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12161 conditions, 7786 events. 340/7786 cut-off events. For 2202/2218 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 80133 event pairs, 136 based on Foata normal form. 18/7230 useless extension candidates. Maximal degree in co-relation 10502. Up to 351 conditions per place. [2022-11-20 12:34:09,757 INFO L137 encePairwiseOnDemand]: 311/335 looper letters, 145 selfloop transitions, 79 changer transitions 0/456 dead transitions. [2022-11-20 12:34:09,757 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 456 transitions, 2116 flow [2022-11-20 12:34:09,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 12:34:09,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-20 12:34:09,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 7844 transitions. [2022-11-20 12:34:09,770 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.780497512437811 [2022-11-20 12:34:09,770 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 7844 transitions. [2022-11-20 12:34:09,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 7844 transitions. [2022-11-20 12:34:09,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:34:09,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 7844 transitions. [2022-11-20 12:34:09,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 261.46666666666664) internal successors, (7844), 30 states have internal predecessors, (7844), 0 states have call successors, (0), 0 states 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 12:34:09,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 335.0) internal successors, (10385), 31 states have internal predecessors, (10385), 0 states have call successors, (0), 0 states 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 12:34:09,804 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 335.0) internal successors, (10385), 31 states have internal predecessors, (10385), 0 states have call successors, (0), 0 states 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 12:34:09,804 INFO L175 Difference]: Start difference. First operand has 351 places, 351 transitions, 1216 flow. Second operand 30 states and 7844 transitions. [2022-11-20 12:34:09,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 456 transitions, 2116 flow [2022-11-20 12:34:09,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 456 transitions, 2106 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:34:09,831 INFO L231 Difference]: Finished difference. Result has 382 places, 381 transitions, 1615 flow [2022-11-20 12:34:09,832 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=1206, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1615, PETRI_PLACES=382, PETRI_TRANSITIONS=381} [2022-11-20 12:34:09,832 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 92 predicate places. [2022-11-20 12:34:09,833 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 381 transitions, 1615 flow [2022-11-20 12:34:09,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 259.04761904761904) internal successors, (5440), 21 states have internal predecessors, (5440), 0 states have call successors, (0), 0 states 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 12:34:09,834 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:34:09,834 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:34:09,845 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-11-20 12:34:10,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 12:34:10,040 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:34:10,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:10,040 INFO L85 PathProgramCache]: Analyzing trace with hash -919115944, now seen corresponding path program 1 times [2022-11-20 12:34:10,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:10,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709417059] [2022-11-20 12:34:10,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:10,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:10,062 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:34:10,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1640278866] [2022-11-20 12:34:10,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:10,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:34:10,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:34:10,064 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:34:10,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-20 12:34:10,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:10,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:34:10,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:34:10,507 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:34:10,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:34:10,870 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:34:10,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:10,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709417059] [2022-11-20 12:34:10,871 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:34:10,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640278866] [2022-11-20 12:34:10,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640278866] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:34:10,871 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:34:10,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2022-11-20 12:34:10,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804025473] [2022-11-20 12:34:10,872 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:34:10,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 12:34:10,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:10,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 12:34:10,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2022-11-20 12:34:10,880 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 335 [2022-11-20 12:34:10,885 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 381 transitions, 1615 flow. Second operand has 19 states, 19 states have (on average 249.78947368421052) internal successors, (4746), 19 states have internal predecessors, (4746), 0 states have call successors, (0), 0 states 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 12:34:10,885 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:34:10,885 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 335 [2022-11-20 12:34:10,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:34:13,745 INFO L130 PetriNetUnfolder]: 746/9516 cut-off events. [2022-11-20 12:34:13,745 INFO L131 PetriNetUnfolder]: For 2955/3013 co-relation queries the response was YES. [2022-11-20 12:34:13,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15723 conditions, 9516 events. 746/9516 cut-off events. For 2955/3013 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 102948 event pairs, 314 based on Foata normal form. 58/8610 useless extension candidates. Maximal degree in co-relation 12648. Up to 655 conditions per place. [2022-11-20 12:34:13,833 INFO L137 encePairwiseOnDemand]: 307/335 looper letters, 201 selfloop transitions, 74 changer transitions 0/492 dead transitions. [2022-11-20 12:34:13,833 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 492 transitions, 2569 flow [2022-11-20 12:34:13,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 12:34:13,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-20 12:34:13,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 8569 transitions. [2022-11-20 12:34:13,844 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7523266022827041 [2022-11-20 12:34:13,845 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 8569 transitions. [2022-11-20 12:34:13,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 8569 transitions. [2022-11-20 12:34:13,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:34:13,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 8569 transitions. [2022-11-20 12:34:13,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 252.02941176470588) internal successors, (8569), 34 states have internal predecessors, (8569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:14,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 335.0) internal successors, (11725), 35 states have internal predecessors, (11725), 0 states have call successors, (0), 0 states 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 12:34:14,018 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 335.0) internal successors, (11725), 35 states have internal predecessors, (11725), 0 states have call successors, (0), 0 states 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 12:34:14,018 INFO L175 Difference]: Start difference. First operand has 382 places, 381 transitions, 1615 flow. Second operand 34 states and 8569 transitions. [2022-11-20 12:34:14,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 492 transitions, 2569 flow [2022-11-20 12:34:14,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 492 transitions, 2484 flow, removed 17 selfloop flow, removed 6 redundant places. [2022-11-20 12:34:14,055 INFO L231 Difference]: Finished difference. Result has 419 places, 395 transitions, 1794 flow [2022-11-20 12:34:14,056 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=1533, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1794, PETRI_PLACES=419, PETRI_TRANSITIONS=395} [2022-11-20 12:34:14,057 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 129 predicate places. [2022-11-20 12:34:14,057 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 395 transitions, 1794 flow [2022-11-20 12:34:14,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 249.78947368421052) internal successors, (4746), 19 states have internal predecessors, (4746), 0 states have call successors, (0), 0 states 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 12:34:14,058 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:34:14,058 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:34:14,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-20 12:34:14,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 12:34:14,264 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:34:14,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:14,265 INFO L85 PathProgramCache]: Analyzing trace with hash 976410379, now seen corresponding path program 1 times [2022-11-20 12:34:14,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:14,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569556372] [2022-11-20 12:34:14,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:14,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:14,279 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:34:14,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1474867552] [2022-11-20 12:34:14,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:14,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:34:14,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:34:14,281 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:34:14,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-20 12:34:14,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:14,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:34:14,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:34:14,529 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 12:34:14,530 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:34:14,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:14,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569556372] [2022-11-20 12:34:14,530 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:34:14,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474867552] [2022-11-20 12:34:14,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474867552] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:14,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:14,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:34:14,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174937996] [2022-11-20 12:34:14,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:14,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:34:14,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:14,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:34:14,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:34:14,534 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 335 [2022-11-20 12:34:14,535 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 395 transitions, 1794 flow. Second operand has 6 states, 6 states have (on average 236.5) internal successors, (1419), 6 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states 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 12:34:14,535 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:34:14,535 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 335 [2022-11-20 12:34:14,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:34:16,150 INFO L130 PetriNetUnfolder]: 436/8482 cut-off events. [2022-11-20 12:34:16,150 INFO L131 PetriNetUnfolder]: For 3171/3227 co-relation queries the response was YES. [2022-11-20 12:34:16,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13155 conditions, 8482 events. 436/8482 cut-off events. For 3171/3227 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 89571 event pairs, 126 based on Foata normal form. 52/7538 useless extension candidates. Maximal degree in co-relation 11623. Up to 1116 conditions per place. [2022-11-20 12:34:16,235 INFO L137 encePairwiseOnDemand]: 327/335 looper letters, 84 selfloop transitions, 5 changer transitions 14/413 dead transitions. [2022-11-20 12:34:16,235 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 413 transitions, 2022 flow [2022-11-20 12:34:16,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:34:16,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:34:16,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1685 transitions. [2022-11-20 12:34:16,238 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7185501066098081 [2022-11-20 12:34:16,238 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1685 transitions. [2022-11-20 12:34:16,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1685 transitions. [2022-11-20 12:34:16,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:34:16,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1685 transitions. [2022-11-20 12:34:16,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 240.71428571428572) internal successors, (1685), 7 states have internal predecessors, (1685), 0 states have call successors, (0), 0 states 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 12:34:16,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 335.0) internal successors, (2680), 8 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states 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 12:34:16,244 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 335.0) internal successors, (2680), 8 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states 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 12:34:16,245 INFO L175 Difference]: Start difference. First operand has 419 places, 395 transitions, 1794 flow. Second operand 7 states and 1685 transitions. [2022-11-20 12:34:16,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 413 transitions, 2022 flow [2022-11-20 12:34:16,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 413 transitions, 1944 flow, removed 1 selfloop flow, removed 15 redundant places. [2022-11-20 12:34:16,278 INFO L231 Difference]: Finished difference. Result has 413 places, 386 transitions, 1672 flow [2022-11-20 12:34:16,279 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=1716, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1672, PETRI_PLACES=413, PETRI_TRANSITIONS=386} [2022-11-20 12:34:16,280 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 123 predicate places. [2022-11-20 12:34:16,280 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 386 transitions, 1672 flow [2022-11-20 12:34:16,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 236.5) internal successors, (1419), 6 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states 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 12:34:16,280 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:34:16,281 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:34:16,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-20 12:34:16,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-20 12:34:16,487 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:34:16,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:16,487 INFO L85 PathProgramCache]: Analyzing trace with hash -200258300, now seen corresponding path program 2 times [2022-11-20 12:34:16,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:16,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635203888] [2022-11-20 12:34:16,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:16,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:16,518 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:34:16,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [213166553] [2022-11-20 12:34:16,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:34:16,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:34:16,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:34:16,520 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:34:16,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-20 12:34:16,677 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:34:16,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:34:16,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:34:16,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:34:18,726 WARN L859 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~N~0 ~M~0))) (and (<= .cse0 2147483647) (<= c_~L~0 .cse0)))) is different from true [2022-11-20 12:34:21,303 WARN L859 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~N~0 ~M~0))) (and (<= .cse0 2147483647) (<= |c_ULTIMATE.start_create_fresh_int_array_#in~size#1| .cse0)))) is different from true [2022-11-20 12:34:23,362 WARN L859 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~N~0 ~M~0))) (and (<= |c_ULTIMATE.start_create_fresh_int_array_~size#1| .cse0) (<= .cse0 2147483647)))) is different from true [2022-11-20 12:34:25,931 WARN L859 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~N~0 ~M~0))) (and (<= .cse0 2147483647) (<= (+ |c_ULTIMATE.start_create_fresh_int_array_~i~3#1| 1) .cse0)))) is different from true [2022-11-20 12:34:27,985 WARN L859 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~N~0 ~M~0))) (and (<= .cse0 2147483647) (<= (+ |c_ULTIMATE.start_create_fresh_int_array_#t~post27#1| 1) .cse0)))) is different from true [2022-11-20 12:34:27,986 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 20 not checked. [2022-11-20 12:34:27,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:34:28,179 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-11-20 12:34:28,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:28,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635203888] [2022-11-20 12:34:28,180 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:34:28,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213166553] [2022-11-20 12:34:28,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213166553] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:34:28,180 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:34:28,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-20 12:34:28,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551904499] [2022-11-20 12:34:28,180 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:34:28,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 12:34:28,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:28,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 12:34:28,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=48, Unknown=5, NotChecked=80, Total=156 [2022-11-20 12:34:28,184 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 335 [2022-11-20 12:34:28,186 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 386 transitions, 1672 flow. Second operand has 13 states, 13 states have (on average 219.0) internal successors, (2847), 13 states have internal predecessors, (2847), 0 states have call successors, (0), 0 states 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 12:34:28,186 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:34:28,187 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 335 [2022-11-20 12:34:28,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:34:55,959 WARN L233 SmtUtils]: Spent 7.34s on a formula simplification. DAG size of input: 19 DAG size of output: 16 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:35:03,903 WARN L233 SmtUtils]: Spent 7.92s on a formula simplification. DAG size of input: 20 DAG size of output: 16 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:35:11,037 INFO L130 PetriNetUnfolder]: 2242/14698 cut-off events. [2022-11-20 12:35:11,037 INFO L131 PetriNetUnfolder]: For 11535/11687 co-relation queries the response was YES. [2022-11-20 12:35:11,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28983 conditions, 14698 events. 2242/14698 cut-off events. For 11535/11687 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 168492 event pairs, 1794 based on Foata normal form. 154/13198 useless extension candidates. Maximal degree in co-relation 28085. Up to 4455 conditions per place. [2022-11-20 12:35:11,447 INFO L137 encePairwiseOnDemand]: 315/335 looper letters, 182 selfloop transitions, 43 changer transitions 0/422 dead transitions. [2022-11-20 12:35:11,447 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 422 transitions, 2222 flow [2022-11-20 12:35:11,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:35:11,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-20 12:35:11,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3112 transitions. [2022-11-20 12:35:11,451 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6635394456289979 [2022-11-20 12:35:11,452 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3112 transitions. [2022-11-20 12:35:11,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3112 transitions. [2022-11-20 12:35:11,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:35:11,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3112 transitions. [2022-11-20 12:35:11,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 222.28571428571428) internal successors, (3112), 14 states have internal predecessors, (3112), 0 states have call successors, (0), 0 states 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 12:35:11,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 335.0) internal successors, (5025), 15 states have internal predecessors, (5025), 0 states have call successors, (0), 0 states 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 12:35:11,463 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 335.0) internal successors, (5025), 15 states have internal predecessors, (5025), 0 states have call successors, (0), 0 states 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 12:35:11,463 INFO L175 Difference]: Start difference. First operand has 413 places, 386 transitions, 1672 flow. Second operand 14 states and 3112 transitions. [2022-11-20 12:35:11,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 422 transitions, 2222 flow [2022-11-20 12:35:11,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 422 transitions, 2158 flow, removed 11 selfloop flow, removed 14 redundant places. [2022-11-20 12:35:11,555 INFO L231 Difference]: Finished difference. Result has 400 places, 385 transitions, 1690 flow [2022-11-20 12:35:11,555 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=1604, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1690, PETRI_PLACES=400, PETRI_TRANSITIONS=385} [2022-11-20 12:35:11,556 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 110 predicate places. [2022-11-20 12:35:11,556 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 385 transitions, 1690 flow [2022-11-20 12:35:11,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 219.0) internal successors, (2847), 13 states have internal predecessors, (2847), 0 states have call successors, (0), 0 states 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 12:35:11,557 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:35:11,557 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:11,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-20 12:35:11,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:35:11,763 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:35:11,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:11,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1517188225, now seen corresponding path program 1 times [2022-11-20 12:35:11,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:35:11,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903664258] [2022-11-20 12:35:11,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:11,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:35:11,780 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:35:11,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1220308306] [2022-11-20 12:35:11,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:11,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:35:11,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:35:11,782 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:35:11,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-20 12:35:11,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:11,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:35:11,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:35:11,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:35:11,981 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:35:11,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:35:11,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903664258] [2022-11-20 12:35:11,981 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:35:11,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220308306] [2022-11-20 12:35:11,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220308306] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:35:11,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:35:11,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:35:11,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216101588] [2022-11-20 12:35:11,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:35:11,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:35:11,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:35:11,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:35:11,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:35:11,985 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 335 [2022-11-20 12:35:11,986 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 385 transitions, 1690 flow. Second operand has 4 states, 4 states have (on average 292.5) internal successors, (1170), 4 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states 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 12:35:11,986 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:35:11,986 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 335 [2022-11-20 12:35:11,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:35:14,662 INFO L130 PetriNetUnfolder]: 2190/13252 cut-off events. [2022-11-20 12:35:14,662 INFO L131 PetriNetUnfolder]: For 4047/4067 co-relation queries the response was YES. [2022-11-20 12:35:14,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21511 conditions, 13252 events. 2190/13252 cut-off events. For 4047/4067 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 164356 event pairs, 900 based on Foata normal form. 0/10826 useless extension candidates. Maximal degree in co-relation 17125. Up to 2613 conditions per place. [2022-11-20 12:35:14,753 INFO L137 encePairwiseOnDemand]: 329/335 looper letters, 41 selfloop transitions, 6 changer transitions 0/407 dead transitions. [2022-11-20 12:35:14,753 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 407 transitions, 1834 flow [2022-11-20 12:35:14,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:35:14,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:35:14,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1502 transitions. [2022-11-20 12:35:14,756 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8967164179104478 [2022-11-20 12:35:14,756 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1502 transitions. [2022-11-20 12:35:14,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1502 transitions. [2022-11-20 12:35:14,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:35:14,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1502 transitions. [2022-11-20 12:35:14,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 300.4) internal successors, (1502), 5 states have internal predecessors, (1502), 0 states have call successors, (0), 0 states 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 12:35:14,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 335.0) internal successors, (2010), 6 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states 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 12:35:14,761 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 335.0) internal successors, (2010), 6 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states 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 12:35:14,761 INFO L175 Difference]: Start difference. First operand has 400 places, 385 transitions, 1690 flow. Second operand 5 states and 1502 transitions. [2022-11-20 12:35:14,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 407 transitions, 1834 flow [2022-11-20 12:35:14,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 407 transitions, 1765 flow, removed 0 selfloop flow, removed 10 redundant places. [2022-11-20 12:35:14,783 INFO L231 Difference]: Finished difference. Result has 398 places, 389 transitions, 1663 flow [2022-11-20 12:35:14,784 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=1621, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1663, PETRI_PLACES=398, PETRI_TRANSITIONS=389} [2022-11-20 12:35:14,784 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 108 predicate places. [2022-11-20 12:35:14,784 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 389 transitions, 1663 flow [2022-11-20 12:35:14,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 292.5) internal successors, (1170), 4 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states 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 12:35:14,785 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:35:14,785 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:14,796 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-11-20 12:35:14,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:35:14,991 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:35:14,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:14,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1517189219, now seen corresponding path program 1 times [2022-11-20 12:35:14,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:35:14,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784516028] [2022-11-20 12:35:14,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:14,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:35:15,020 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:35:15,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [295620661] [2022-11-20 12:35:15,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:15,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:35:15,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:35:15,022 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:35:15,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-20 12:35:15,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:15,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:35:15,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:35:15,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:35:15,317 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:35:15,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:35:15,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784516028] [2022-11-20 12:35:15,317 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:35:15,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295620661] [2022-11-20 12:35:15,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295620661] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:35:15,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:35:15,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:35:15,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779675566] [2022-11-20 12:35:15,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:35:15,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:35:15,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:35:15,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:35:15,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:35:15,321 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 335 [2022-11-20 12:35:15,322 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 389 transitions, 1663 flow. Second operand has 7 states, 7 states have (on average 246.0) internal successors, (1722), 7 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states 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 12:35:15,322 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:35:15,322 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 335 [2022-11-20 12:35:15,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:35:19,308 INFO L130 PetriNetUnfolder]: 1810/16634 cut-off events. [2022-11-20 12:35:19,308 INFO L131 PetriNetUnfolder]: For 6172/6208 co-relation queries the response was YES. [2022-11-20 12:35:19,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29040 conditions, 16634 events. 1810/16634 cut-off events. For 6172/6208 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 213115 event pairs, 1200 based on Foata normal form. 0/14652 useless extension candidates. Maximal degree in co-relation 22388. Up to 4252 conditions per place. [2022-11-20 12:35:19,445 INFO L137 encePairwiseOnDemand]: 325/335 looper letters, 208 selfloop transitions, 38 changer transitions 0/486 dead transitions. [2022-11-20 12:35:19,446 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 486 transitions, 2546 flow [2022-11-20 12:35:19,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:35:19,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 12:35:19,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2801 transitions. [2022-11-20 12:35:19,450 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7601085481682497 [2022-11-20 12:35:19,450 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2801 transitions. [2022-11-20 12:35:19,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2801 transitions. [2022-11-20 12:35:19,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:35:19,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2801 transitions. [2022-11-20 12:35:19,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 254.63636363636363) internal successors, (2801), 11 states have internal predecessors, (2801), 0 states have call successors, (0), 0 states 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 12:35:19,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 335.0) internal successors, (4020), 12 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states 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 12:35:19,460 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 335.0) internal successors, (4020), 12 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states 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 12:35:19,461 INFO L175 Difference]: Start difference. First operand has 398 places, 389 transitions, 1663 flow. Second operand 11 states and 2801 transitions. [2022-11-20 12:35:19,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 486 transitions, 2546 flow [2022-11-20 12:35:19,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 486 transitions, 2546 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:35:19,515 INFO L231 Difference]: Finished difference. Result has 413 places, 405 transitions, 1889 flow [2022-11-20 12:35:19,515 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=1663, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1889, PETRI_PLACES=413, PETRI_TRANSITIONS=405} [2022-11-20 12:35:19,516 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 123 predicate places. [2022-11-20 12:35:19,516 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 405 transitions, 1889 flow [2022-11-20 12:35:19,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 246.0) internal successors, (1722), 7 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states 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 12:35:19,517 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:35:19,517 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:19,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-20 12:35:19,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:35:19,722 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:35:19,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:19,723 INFO L85 PathProgramCache]: Analyzing trace with hash -211804433, now seen corresponding path program 1 times [2022-11-20 12:35:19,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:35:19,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031440245] [2022-11-20 12:35:19,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:19,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:35:19,738 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:35:19,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [286293413] [2022-11-20 12:35:19,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:19,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:35:19,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:35:19,740 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:35:19,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-20 12:35:19,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:19,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:35:19,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:35:19,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:35:19,950 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:35:19,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:35:19,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031440245] [2022-11-20 12:35:19,950 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:35:19,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286293413] [2022-11-20 12:35:19,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286293413] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:35:19,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:35:19,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:35:19,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162548148] [2022-11-20 12:35:19,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:35:19,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:35:19,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:35:19,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:35:19,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:35:19,954 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 335 [2022-11-20 12:35:19,955 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 405 transitions, 1889 flow. Second operand has 4 states, 4 states have (on average 292.75) internal successors, (1171), 4 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states 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 12:35:19,955 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:35:19,955 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 335 [2022-11-20 12:35:19,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:35:24,195 INFO L130 PetriNetUnfolder]: 2560/17726 cut-off events. [2022-11-20 12:35:24,195 INFO L131 PetriNetUnfolder]: For 7545/7581 co-relation queries the response was YES. [2022-11-20 12:35:24,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30926 conditions, 17726 events. 2560/17726 cut-off events. For 7545/7581 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 229149 event pairs, 1250 based on Foata normal form. 288/15804 useless extension candidates. Maximal degree in co-relation 23890. Up to 3840 conditions per place. [2022-11-20 12:35:24,350 INFO L137 encePairwiseOnDemand]: 331/335 looper letters, 23 selfloop transitions, 6 changer transitions 0/405 dead transitions. [2022-11-20 12:35:24,350 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 405 transitions, 1943 flow [2022-11-20 12:35:24,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:35:24,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:35:24,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1190 transitions. [2022-11-20 12:35:24,351 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8880597014925373 [2022-11-20 12:35:24,352 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1190 transitions. [2022-11-20 12:35:24,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1190 transitions. [2022-11-20 12:35:24,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:35:24,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1190 transitions. [2022-11-20 12:35:24,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 297.5) internal successors, (1190), 4 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states 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 12:35:24,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 335.0) internal successors, (1675), 5 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states 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 12:35:24,355 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 335.0) internal successors, (1675), 5 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states 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 12:35:24,356 INFO L175 Difference]: Start difference. First operand has 413 places, 405 transitions, 1889 flow. Second operand 4 states and 1190 transitions. [2022-11-20 12:35:24,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 405 transitions, 1943 flow [2022-11-20 12:35:24,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 405 transitions, 1927 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:35:24,419 INFO L231 Difference]: Finished difference. Result has 411 places, 403 transitions, 1875 flow [2022-11-20 12:35:24,419 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=1863, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1875, PETRI_PLACES=411, PETRI_TRANSITIONS=403} [2022-11-20 12:35:24,420 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 121 predicate places. [2022-11-20 12:35:24,420 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 403 transitions, 1875 flow [2022-11-20 12:35:24,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 292.75) internal successors, (1171), 4 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states 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 12:35:24,420 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:35:24,421 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:35:24,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-20 12:35:24,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-20 12:35:24,627 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:35:24,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:24,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1008598400, now seen corresponding path program 2 times [2022-11-20 12:35:24,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:35:24,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807686514] [2022-11-20 12:35:24,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:24,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:35:24,670 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:35:24,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1631686302] [2022-11-20 12:35:24,677 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:35:24,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:35:24,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:35:24,681 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:35:24,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-20 12:35:24,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:35:24,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:35:24,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:35:24,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:35:26,753 WARN L859 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~N~0 ~M~0))) (and (<= .cse0 2147483647) (<= c_~L~0 .cse0)))) is different from true [2022-11-20 12:35:29,444 WARN L859 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~N~0 ~M~0))) (and (<= (+ c_thread1Thread1of1ForFork1_~i~0 1) .cse0) (<= .cse0 2147483647)))) is different from true [2022-11-20 12:35:31,250 WARN L859 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~N~0 ~M~0))) (and (<= .cse0 2147483647) (<= (+ |c_thread1Thread1of1ForFork1_#t~post1| 1) .cse0)))) is different from true [2022-11-20 12:35:31,251 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 5 not checked. [2022-11-20 12:35:31,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:35:31,447 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-20 12:35:31,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:35:31,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807686514] [2022-11-20 12:35:31,448 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:35:31,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631686302] [2022-11-20 12:35:31,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631686302] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:35:31,448 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:35:31,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-20 12:35:31,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794685910] [2022-11-20 12:35:31,448 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:35:31,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:35:31,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:35:31,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:35:31,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=24, Unknown=3, NotChecked=30, Total=72 [2022-11-20 12:35:31,451 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 335 [2022-11-20 12:35:31,452 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 403 transitions, 1875 flow. Second operand has 9 states, 9 states have (on average 256.77777777777777) internal successors, (2311), 9 states have internal predecessors, (2311), 0 states have call successors, (0), 0 states 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 12:35:31,453 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:35:31,453 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 335 [2022-11-20 12:35:31,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:35:59,435 WARN L233 SmtUtils]: Spent 5.93s on a formula simplification. DAG size of input: 19 DAG size of output: 16 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:36:06,893 WARN L233 SmtUtils]: Spent 7.43s on a formula simplification. DAG size of input: 20 DAG size of output: 16 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:36:21,950 INFO L130 PetriNetUnfolder]: 13310/48742 cut-off events. [2022-11-20 12:36:21,951 INFO L131 PetriNetUnfolder]: For 34143/34517 co-relation queries the response was YES. [2022-11-20 12:36:22,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103454 conditions, 48742 events. 13310/48742 cut-off events. For 34143/34517 co-relation queries the response was YES. Maximal size of possible extension queue 767. Compared 606043 event pairs, 7268 based on Foata normal form. 696/43654 useless extension candidates. Maximal degree in co-relation 78887. Up to 13669 conditions per place. [2022-11-20 12:36:22,722 INFO L137 encePairwiseOnDemand]: 322/335 looper letters, 125 selfloop transitions, 25 changer transitions 3/478 dead transitions. [2022-11-20 12:36:22,723 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 478 transitions, 2426 flow [2022-11-20 12:36:22,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 12:36:22,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-20 12:36:22,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3142 transitions. [2022-11-20 12:36:22,740 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.781592039800995 [2022-11-20 12:36:22,740 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3142 transitions. [2022-11-20 12:36:22,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3142 transitions. [2022-11-20 12:36:22,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:36:22,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3142 transitions. [2022-11-20 12:36:22,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 261.8333333333333) internal successors, (3142), 12 states have internal predecessors, (3142), 0 states have call successors, (0), 0 states 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 12:36:22,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 335.0) internal successors, (4355), 13 states have internal predecessors, (4355), 0 states have call successors, (0), 0 states 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 12:36:22,759 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 335.0) internal successors, (4355), 13 states have internal predecessors, (4355), 0 states have call successors, (0), 0 states 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 12:36:22,760 INFO L175 Difference]: Start difference. First operand has 411 places, 403 transitions, 1875 flow. Second operand 12 states and 3142 transitions. [2022-11-20 12:36:22,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 478 transitions, 2426 flow [2022-11-20 12:36:23,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 478 transitions, 2414 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:36:23,420 INFO L231 Difference]: Finished difference. Result has 424 places, 418 transitions, 2035 flow [2022-11-20 12:36:23,421 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=1863, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2035, PETRI_PLACES=424, PETRI_TRANSITIONS=418} [2022-11-20 12:36:23,422 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 134 predicate places. [2022-11-20 12:36:23,422 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 418 transitions, 2035 flow [2022-11-20 12:36:23,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 256.77777777777777) internal successors, (2311), 9 states have internal predecessors, (2311), 0 states have call successors, (0), 0 states 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 12:36:23,423 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:36:23,423 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:36:23,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-20 12:36:23,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-20 12:36:23,624 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:36:23,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:36:23,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1725042474, now seen corresponding path program 1 times [2022-11-20 12:36:23,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:36:23,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175194621] [2022-11-20 12:36:23,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:36:23,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:36:23,648 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:36:23,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [245208608] [2022-11-20 12:36:23,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:36:23,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:36:23,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:36:23,650 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:36:23,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-20 12:36:23,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:23,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:36:23,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:36:24,221 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:36:24,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:36:24,368 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:36:24,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:36:24,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175194621] [2022-11-20 12:36:24,369 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:36:24,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245208608] [2022-11-20 12:36:24,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245208608] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:36:24,369 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:36:24,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-11-20 12:36:24,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525159378] [2022-11-20 12:36:24,369 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:36:24,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:36:24,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:36:24,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:36:24,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:36:24,374 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 335 [2022-11-20 12:36:24,377 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 418 transitions, 2035 flow. Second operand has 12 states, 12 states have (on average 265.25) internal successors, (3183), 12 states have internal predecessors, (3183), 0 states have call successors, (0), 0 states 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 12:36:24,377 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:36:24,377 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 335 [2022-11-20 12:36:24,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:36:32,612 INFO L130 PetriNetUnfolder]: 3878/30200 cut-off events. [2022-11-20 12:36:32,612 INFO L131 PetriNetUnfolder]: For 16187/16367 co-relation queries the response was YES. [2022-11-20 12:36:32,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56391 conditions, 30200 events. 3878/30200 cut-off events. For 16187/16367 co-relation queries the response was YES. Maximal size of possible extension queue 648. Compared 427184 event pairs, 2054 based on Foata normal form. 200/27400 useless extension candidates. Maximal degree in co-relation 43675. Up to 7393 conditions per place. [2022-11-20 12:36:33,003 INFO L137 encePairwiseOnDemand]: 320/335 looper letters, 85 selfloop transitions, 19 changer transitions 0/464 dead transitions. [2022-11-20 12:36:33,003 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 464 transitions, 2387 flow [2022-11-20 12:36:33,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 12:36:33,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-20 12:36:33,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4554 transitions. [2022-11-20 12:36:33,009 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7996488147497806 [2022-11-20 12:36:33,009 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4554 transitions. [2022-11-20 12:36:33,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4554 transitions. [2022-11-20 12:36:33,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:36:33,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4554 transitions. [2022-11-20 12:36:33,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 267.88235294117646) internal successors, (4554), 17 states have internal predecessors, (4554), 0 states have call successors, (0), 0 states 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 12:36:33,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 335.0) internal successors, (6030), 18 states have internal predecessors, (6030), 0 states have call successors, (0), 0 states 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 12:36:33,285 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 335.0) internal successors, (6030), 18 states have internal predecessors, (6030), 0 states have call successors, (0), 0 states 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 12:36:33,294 INFO L175 Difference]: Start difference. First operand has 424 places, 418 transitions, 2035 flow. Second operand 17 states and 4554 transitions. [2022-11-20 12:36:33,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 464 transitions, 2387 flow [2022-11-20 12:36:33,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 464 transitions, 2357 flow, removed 12 selfloop flow, removed 2 redundant places. [2022-11-20 12:36:33,460 INFO L231 Difference]: Finished difference. Result has 444 places, 429 transitions, 2120 flow [2022-11-20 12:36:33,461 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=2005, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2120, PETRI_PLACES=444, PETRI_TRANSITIONS=429} [2022-11-20 12:36:33,461 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 154 predicate places. [2022-11-20 12:36:33,461 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 429 transitions, 2120 flow [2022-11-20 12:36:33,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 265.25) internal successors, (3183), 12 states have internal predecessors, (3183), 0 states have call successors, (0), 0 states 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 12:36:33,462 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:36:33,462 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:36:33,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-20 12:36:33,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-20 12:36:33,663 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:36:33,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:36:33,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1506973979, now seen corresponding path program 1 times [2022-11-20 12:36:33,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:36:33,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019371357] [2022-11-20 12:36:33,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:36:33,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:36:33,681 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:36:33,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1464021440] [2022-11-20 12:36:33,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:36:33,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:36:33,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:36:33,683 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:36:33,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-20 12:36:33,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:33,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:36:33,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:36:34,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:36:34,008 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:36:34,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:36:34,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019371357] [2022-11-20 12:36:34,008 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:36:34,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464021440] [2022-11-20 12:36:34,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464021440] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:36:34,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:36:34,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:36:34,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106945679] [2022-11-20 12:36:34,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:36:34,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:36:34,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:36:34,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:36:34,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:36:34,012 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 335 [2022-11-20 12:36:34,013 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 429 transitions, 2120 flow. Second operand has 5 states, 5 states have (on average 285.4) internal successors, (1427), 5 states have internal predecessors, (1427), 0 states have call successors, (0), 0 states 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 12:36:34,013 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:36:34,013 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 335 [2022-11-20 12:36:34,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:36:37,408 INFO L130 PetriNetUnfolder]: 707/14456 cut-off events. [2022-11-20 12:36:37,409 INFO L131 PetriNetUnfolder]: For 9376/9472 co-relation queries the response was YES. [2022-11-20 12:36:37,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25585 conditions, 14456 events. 707/14456 cut-off events. For 9376/9472 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 171082 event pairs, 297 based on Foata normal form. 56/13372 useless extension candidates. Maximal degree in co-relation 24196. Up to 1710 conditions per place. [2022-11-20 12:36:37,565 INFO L137 encePairwiseOnDemand]: 327/335 looper letters, 46 selfloop transitions, 7 changer transitions 0/439 dead transitions. [2022-11-20 12:36:37,565 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 439 transitions, 2275 flow [2022-11-20 12:36:37,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:36:37,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:36:37,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1729 transitions. [2022-11-20 12:36:37,568 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8601990049751244 [2022-11-20 12:36:37,568 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1729 transitions. [2022-11-20 12:36:37,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1729 transitions. [2022-11-20 12:36:37,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:36:37,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1729 transitions. [2022-11-20 12:36:37,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 288.1666666666667) internal successors, (1729), 6 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states 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 12:36:37,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 335.0) internal successors, (2345), 7 states have internal predecessors, (2345), 0 states have call successors, (0), 0 states 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 12:36:37,574 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 335.0) internal successors, (2345), 7 states have internal predecessors, (2345), 0 states have call successors, (0), 0 states 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 12:36:37,574 INFO L175 Difference]: Start difference. First operand has 444 places, 429 transitions, 2120 flow. Second operand 6 states and 1729 transitions. [2022-11-20 12:36:37,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 439 transitions, 2275 flow [2022-11-20 12:36:37,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 439 transitions, 2252 flow, removed 3 selfloop flow, removed 6 redundant places. [2022-11-20 12:36:37,657 INFO L231 Difference]: Finished difference. Result has 445 places, 430 transitions, 2130 flow [2022-11-20 12:36:37,658 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=2101, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2130, PETRI_PLACES=445, PETRI_TRANSITIONS=430} [2022-11-20 12:36:37,658 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 155 predicate places. [2022-11-20 12:36:37,658 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 430 transitions, 2130 flow [2022-11-20 12:36:37,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 285.4) internal successors, (1427), 5 states have internal predecessors, (1427), 0 states have call successors, (0), 0 states 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 12:36:37,658 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:36:37,659 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:36:37,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-20 12:36:37,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-20 12:36:37,859 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:36:37,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:36:37,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1703167644, now seen corresponding path program 1 times [2022-11-20 12:36:37,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:36:37,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900860499] [2022-11-20 12:36:37,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:36:37,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:36:37,875 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:36:37,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2016259312] [2022-11-20 12:36:37,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:36:37,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:36:37,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:36:37,877 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:36:37,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-20 12:36:38,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:38,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:36:38,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:36:38,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:36:38,317 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:36:38,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:36:38,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900860499] [2022-11-20 12:36:38,318 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:36:38,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016259312] [2022-11-20 12:36:38,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016259312] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:36:38,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:36:38,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:36:38,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113014584] [2022-11-20 12:36:38,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:36:38,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:36:38,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:36:38,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:36:38,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:36:38,322 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 335 [2022-11-20 12:36:38,323 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 430 transitions, 2130 flow. Second operand has 3 states, 3 states have (on average 298.0) internal successors, (894), 3 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:36:38,323 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:36:38,323 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 335 [2022-11-20 12:36:38,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:36:42,524 INFO L130 PetriNetUnfolder]: 1527/15310 cut-off events. [2022-11-20 12:36:42,525 INFO L131 PetriNetUnfolder]: For 10951/11047 co-relation queries the response was YES. [2022-11-20 12:36:42,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28405 conditions, 15310 events. 1527/15310 cut-off events. For 10951/11047 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 187083 event pairs, 572 based on Foata normal form. 224/14094 useless extension candidates. Maximal degree in co-relation 27055. Up to 2046 conditions per place. [2022-11-20 12:36:42,721 INFO L137 encePairwiseOnDemand]: 331/335 looper letters, 37 selfloop transitions, 5 changer transitions 0/440 dead transitions. [2022-11-20 12:36:42,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 440 transitions, 2234 flow [2022-11-20 12:36:42,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:36:42,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:36:42,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 923 transitions. [2022-11-20 12:36:42,723 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.918407960199005 [2022-11-20 12:36:42,723 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 923 transitions. [2022-11-20 12:36:42,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 923 transitions. [2022-11-20 12:36:42,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:36:42,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 923 transitions. [2022-11-20 12:36:42,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 307.6666666666667) internal successors, (923), 3 states have internal predecessors, (923), 0 states have call successors, (0), 0 states 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 12:36:42,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states 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 12:36:42,727 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states 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 12:36:42,727 INFO L175 Difference]: Start difference. First operand has 445 places, 430 transitions, 2130 flow. Second operand 3 states and 923 transitions. [2022-11-20 12:36:42,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 440 transitions, 2234 flow [2022-11-20 12:36:42,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 440 transitions, 2225 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:36:42,831 INFO L231 Difference]: Finished difference. Result has 445 places, 428 transitions, 2128 flow [2022-11-20 12:36:42,832 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=2109, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2128, PETRI_PLACES=445, PETRI_TRANSITIONS=428} [2022-11-20 12:36:42,832 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 155 predicate places. [2022-11-20 12:36:42,832 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 428 transitions, 2128 flow [2022-11-20 12:36:42,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 298.0) internal successors, (894), 3 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:36:42,833 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:36:42,833 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:36:42,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-20 12:36:43,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-20 12:36:43,039 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 12:36:43,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:36:43,040 INFO L85 PathProgramCache]: Analyzing trace with hash -84872001, now seen corresponding path program 1 times [2022-11-20 12:36:43,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:36:43,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062049752] [2022-11-20 12:36:43,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:36:43,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:36:43,063 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:36:43,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [756204904] [2022-11-20 12:36:43,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:36:43,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:36:43,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:36:43,065 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:36:43,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034d2a3-3adb-4230-9137-2b04fdf8247f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-20 12:36:43,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:43,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:36:43,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:36:43,316 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 12:36:43,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:36:43,382 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 12:36:43,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:36:43,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062049752] [2022-11-20 12:36:43,383 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:36:43,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756204904] [2022-11-20 12:36:43,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756204904] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:36:43,383 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:36:43,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-11-20 12:36:43,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514110812] [2022-11-20 12:36:43,383 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:36:43,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:36:43,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:36:43,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:36:43,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:36:43,387 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 335 [2022-11-20 12:36:43,389 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 428 transitions, 2128 flow. Second operand has 10 states, 10 states have (on average 302.1) internal successors, (3021), 10 states have internal predecessors, (3021), 0 states have call successors, (0), 0 states 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 12:36:43,389 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:36:43,389 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 335 [2022-11-20 12:36:43,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:36:48,092 INFO L130 PetriNetUnfolder]: 1226/17475 cut-off events. [2022-11-20 12:36:48,092 INFO L131 PetriNetUnfolder]: For 20854/21330 co-relation queries the response was YES. [2022-11-20 12:36:48,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35831 conditions, 17475 events. 1226/17475 cut-off events. For 20854/21330 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 211440 event pairs, 70 based on Foata normal form. 204/16373 useless extension candidates. Maximal degree in co-relation 33715. Up to 1143 conditions per place. [2022-11-20 12:36:48,290 INFO L137 encePairwiseOnDemand]: 329/335 looper letters, 95 selfloop transitions, 31 changer transitions 0/514 dead transitions. [2022-11-20 12:36:48,291 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 514 transitions, 2889 flow [2022-11-20 12:36:48,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:36:48,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-20 12:36:48,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 4259 transitions. [2022-11-20 12:36:48,294 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9081023454157783 [2022-11-20 12:36:48,294 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 4259 transitions. [2022-11-20 12:36:48,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 4259 transitions. [2022-11-20 12:36:48,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:36:48,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 4259 transitions. [2022-11-20 12:36:48,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 304.2142857142857) internal successors, (4259), 14 states have internal predecessors, (4259), 0 states have call successors, (0), 0 states 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 12:36:48,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 335.0) internal successors, (5025), 15 states have internal predecessors, (5025), 0 states have call successors, (0), 0 states 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 12:36:48,306 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 335.0) internal successors, (5025), 15 states have internal predecessors, (5025), 0 states have call successors, (0), 0 states 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 12:36:48,307 INFO L175 Difference]: Start difference. First operand has 445 places, 428 transitions, 2128 flow. Second operand 14 states and 4259 transitions. [2022-11-20 12:36:48,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 514 transitions, 2889 flow