./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-match-symm.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_7fa8cce1-675a-432c-81f8-e9bc54de4544/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8cce1-675a-432c-81f8-e9bc54de4544/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_7fa8cce1-675a-432c-81f8-e9bc54de4544/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8cce1-675a-432c-81f8-e9bc54de4544/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-match-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8cce1-675a-432c-81f8-e9bc54de4544/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_7fa8cce1-675a-432c-81f8-e9bc54de4544/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 016929a4a7ae1865ccc9d17762b9a3f4b350d2f1f075a0491feba933e4e45fac --- 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 12:36:49,131 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:36:49,134 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:36:49,176 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:36:49,177 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:36:49,178 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:36:49,180 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:36:49,182 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:36:49,184 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:36:49,185 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:36:49,186 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:36:49,188 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:36:49,189 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:36:49,190 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:36:49,191 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:36:49,193 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:36:49,194 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:36:49,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:36:49,198 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:36:49,200 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:36:49,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:36:49,206 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:36:49,210 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:36:49,213 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:36:49,221 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:36:49,224 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:36:49,232 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:36:49,233 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:36:49,235 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:36:49,237 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:36:49,237 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:36:49,238 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:36:49,239 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:36:49,240 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:36:49,242 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:36:49,242 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:36:49,243 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:36:49,244 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:36:49,244 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:36:49,245 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:36:49,246 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:36:49,248 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8cce1-675a-432c-81f8-e9bc54de4544/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 12:36:49,276 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:36:49,277 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:36:49,277 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:36:49,277 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:36:49,278 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:36:49,279 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:36:49,280 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:36:49,280 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:36:49,280 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:36:49,281 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:36:49,281 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:36:49,281 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:36:49,282 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:36:49,282 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:36:49,282 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:36:49,283 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:36:49,283 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:36:49,284 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:36:49,284 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 12:36:49,284 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:36:49,285 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:36:49,285 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:36:49,285 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:36:49,285 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:36:49,286 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:36:49,286 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:36:49,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:36:49,287 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:36:49,287 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:36:49,287 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:36:49,288 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:36:49,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:36:49,288 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:36:49,289 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:36:49,289 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:36:49,289 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_7fa8cce1-675a-432c-81f8-e9bc54de4544/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8cce1-675a-432c-81f8-e9bc54de4544/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 016929a4a7ae1865ccc9d17762b9a3f4b350d2f1f075a0491feba933e4e45fac [2022-11-20 12:36:49,594 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:36:49,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:36:49,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:36:49,629 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:36:49,630 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:36:49,631 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8cce1-675a-432c-81f8-e9bc54de4544/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/chl-match-symm.wvr.c [2022-11-20 12:36:53,041 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:36:53,401 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:36:53,402 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8cce1-675a-432c-81f8-e9bc54de4544/sv-benchmarks/c/weaver/chl-match-symm.wvr.c [2022-11-20 12:36:53,411 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8cce1-675a-432c-81f8-e9bc54de4544/bin/uautomizer-ug76WZFUDN/data/93c6bd6ba/5e2537d6e10c41b8ab0b8013cc522925/FLAG447327d63 [2022-11-20 12:36:53,428 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8cce1-675a-432c-81f8-e9bc54de4544/bin/uautomizer-ug76WZFUDN/data/93c6bd6ba/5e2537d6e10c41b8ab0b8013cc522925 [2022-11-20 12:36:53,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:36:53,435 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:36:53,438 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:36:53,438 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:36:53,442 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:36:53,444 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:36:53" (1/1) ... [2022-11-20 12:36:53,445 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33227e3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:53, skipping insertion in model container [2022-11-20 12:36:53,446 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:36:53" (1/1) ... [2022-11-20 12:36:53,455 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:36:53,485 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:36:53,644 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_7fa8cce1-675a-432c-81f8-e9bc54de4544/sv-benchmarks/c/weaver/chl-match-symm.wvr.c[2584,2597] [2022-11-20 12:36:53,649 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:36:53,661 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:36:53,685 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_7fa8cce1-675a-432c-81f8-e9bc54de4544/sv-benchmarks/c/weaver/chl-match-symm.wvr.c[2584,2597] [2022-11-20 12:36:53,688 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:36:53,709 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:36:53,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:53 WrapperNode [2022-11-20 12:36:53,710 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:36:53,711 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:36:53,712 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:36:53,712 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:36:53,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:53" (1/1) ... [2022-11-20 12:36:53,729 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:53" (1/1) ... [2022-11-20 12:36:53,761 INFO L138 Inliner]: procedures = 22, calls = 27, calls flagged for inlining = 11, calls inlined = 17, statements flattened = 204 [2022-11-20 12:36:53,762 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:36:53,769 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:36:53,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:36:53,769 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:36:53,776 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:53" (1/1) ... [2022-11-20 12:36:53,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:53" (1/1) ... [2022-11-20 12:36:53,779 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:53" (1/1) ... [2022-11-20 12:36:53,780 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:53" (1/1) ... [2022-11-20 12:36:53,787 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:53" (1/1) ... [2022-11-20 12:36:53,793 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:53" (1/1) ... [2022-11-20 12:36:53,795 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:53" (1/1) ... [2022-11-20 12:36:53,797 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:53" (1/1) ... [2022-11-20 12:36:53,801 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:36:53,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:36:53,803 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:36:53,814 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:36:53,815 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:53" (1/1) ... [2022-11-20 12:36:53,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:36:53,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8cce1-675a-432c-81f8-e9bc54de4544/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:36:53,848 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8cce1-675a-432c-81f8-e9bc54de4544/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:36:53,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8cce1-675a-432c-81f8-e9bc54de4544/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:36:53,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:36:53,887 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 12:36:53,887 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 12:36:53,887 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 12:36:53,887 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 12:36:53,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:36:53,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:36:53,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:36:53,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:36:53,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:36:53,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:36:53,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:36:53,891 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 12:36:54,004 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:36:54,007 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:36:54,569 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:36:54,582 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:36:54,582 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 12:36:54,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:36:54 BoogieIcfgContainer [2022-11-20 12:36:54,586 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:36:54,589 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:36:54,589 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:36:54,593 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:36:54,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:36:53" (1/3) ... [2022-11-20 12:36:54,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23870a85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:36:54, skipping insertion in model container [2022-11-20 12:36:54,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:53" (2/3) ... [2022-11-20 12:36:54,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23870a85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:36:54, skipping insertion in model container [2022-11-20 12:36:54,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:36:54" (3/3) ... [2022-11-20 12:36:54,597 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-match-symm.wvr.c [2022-11-20 12:36:54,608 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 12:36:54,623 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:36:54,623 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2022-11-20 12:36:54,623 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:36:54,797 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 12:36:54,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 287 places, 299 transitions, 614 flow [2022-11-20 12:36:55,049 INFO L130 PetriNetUnfolder]: 19/297 cut-off events. [2022-11-20 12:36:55,050 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 12:36:55,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 297 events. 19/297 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 418 event pairs, 0 based on Foata normal form. 0/254 useless extension candidates. Maximal degree in co-relation 217. Up to 2 conditions per place. [2022-11-20 12:36:55,090 INFO L82 GeneralOperation]: Start removeDead. Operand has 287 places, 299 transitions, 614 flow [2022-11-20 12:36:55,105 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 253 places, 262 transitions, 533 flow [2022-11-20 12:36:55,124 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:36:55,131 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;@67b5a951, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:36:55,131 INFO L358 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2022-11-20 12:36:55,149 INFO L130 PetriNetUnfolder]: 0/64 cut-off events. [2022-11-20 12:36:55,150 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:36:55,150 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:36:55,151 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 12:36:55,152 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-11-20 12:36:55,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:36:55,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1964531808, now seen corresponding path program 1 times [2022-11-20 12:36:55,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:36:55,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92526432] [2022-11-20 12:36:55,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:36:55,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:36:55,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:55,710 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 12:36:55,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:36:55,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92526432] [2022-11-20 12:36:55,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92526432] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:36:55,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:36:55,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:36:55,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072518491] [2022-11-20 12:36:55,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:36:55,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:36:55,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:36:55,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:36:55,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:36:55,778 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 299 [2022-11-20 12:36:55,785 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 262 transitions, 533 flow. Second operand has 6 states, 6 states have (on average 238.83333333333334) internal successors, (1433), 6 states have internal predecessors, (1433), 0 states have call successors, (0), 0 states 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 12:36:55,786 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:36:55,786 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 299 [2022-11-20 12:36:55,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:36:56,479 INFO L130 PetriNetUnfolder]: 119/1131 cut-off events. [2022-11-20 12:36:56,479 INFO L131 PetriNetUnfolder]: For 55/55 co-relation queries the response was YES. [2022-11-20 12:36:56,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1454 conditions, 1131 events. 119/1131 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 7309 event pairs, 15 based on Foata normal form. 142/1064 useless extension candidates. Maximal degree in co-relation 1374. Up to 81 conditions per place. [2022-11-20 12:36:56,503 INFO L137 encePairwiseOnDemand]: 281/299 looper letters, 51 selfloop transitions, 9 changer transitions 0/265 dead transitions. [2022-11-20 12:36:56,504 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 265 transitions, 671 flow [2022-11-20 12:36:56,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:36:56,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:36:56,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1741 transitions. [2022-11-20 12:36:56,537 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.831820353559484 [2022-11-20 12:36:56,538 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1741 transitions. [2022-11-20 12:36:56,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1741 transitions. [2022-11-20 12:36:56,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:36:56,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1741 transitions. [2022-11-20 12:36:56,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 248.71428571428572) internal successors, (1741), 7 states have internal predecessors, (1741), 0 states have call successors, (0), 0 states 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 12:36:56,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states 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 12:36:56,576 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states 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 12:36:56,579 INFO L175 Difference]: Start difference. First operand has 253 places, 262 transitions, 533 flow. Second operand 7 states and 1741 transitions. [2022-11-20 12:36:56,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 265 transitions, 671 flow [2022-11-20 12:36:56,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 265 transitions, 661 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:36:56,596 INFO L231 Difference]: Finished difference. Result has 255 places, 253 transitions, 528 flow [2022-11-20 12:36:56,599 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=528, PETRI_PLACES=255, PETRI_TRANSITIONS=253} [2022-11-20 12:36:56,606 INFO L288 CegarLoopForPetriNet]: 253 programPoint places, 2 predicate places. [2022-11-20 12:36:56,606 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 253 transitions, 528 flow [2022-11-20 12:36:56,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 238.83333333333334) internal successors, (1433), 6 states have internal predecessors, (1433), 0 states have call successors, (0), 0 states 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 12:36:56,608 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:36:56,609 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:36:56,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:36:56,610 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-11-20 12:36:56,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:36:56,611 INFO L85 PathProgramCache]: Analyzing trace with hash 770944624, now seen corresponding path program 1 times [2022-11-20 12:36:56,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:36:56,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922379379] [2022-11-20 12:36:56,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:36:56,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:36:56,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:56,841 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 12:36:56,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:36:56,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922379379] [2022-11-20 12:36:56,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922379379] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:36:56,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:36:56,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:36:56,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555367870] [2022-11-20 12:36:56,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:36:56,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:36:56,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:36:56,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:36:56,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:36:56,848 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 299 [2022-11-20 12:36:56,849 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 253 transitions, 528 flow. Second operand has 4 states, 4 states have (on average 238.75) internal successors, (955), 4 states have internal predecessors, (955), 0 states have call successors, (0), 0 states 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 12:36:56,849 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:36:56,850 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 299 [2022-11-20 12:36:56,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:36:57,136 INFO L130 PetriNetUnfolder]: 75/589 cut-off events. [2022-11-20 12:36:57,136 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-11-20 12:36:57,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 939 conditions, 589 events. 75/589 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2944 event pairs, 30 based on Foata normal form. 4/514 useless extension candidates. Maximal degree in co-relation 372. Up to 99 conditions per place. [2022-11-20 12:36:57,149 INFO L137 encePairwiseOnDemand]: 286/299 looper letters, 59 selfloop transitions, 9 changer transitions 0/273 dead transitions. [2022-11-20 12:36:57,149 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 273 transitions, 709 flow [2022-11-20 12:36:57,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:36:57,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:36:57,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1020 transitions. [2022-11-20 12:36:57,153 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8528428093645485 [2022-11-20 12:36:57,153 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1020 transitions. [2022-11-20 12:36:57,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1020 transitions. [2022-11-20 12:36:57,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:36:57,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1020 transitions. [2022-11-20 12:36:57,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states 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 12:36:57,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 299.0) internal successors, (1495), 5 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states 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 12:36:57,162 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 299.0) internal successors, (1495), 5 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states 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 12:36:57,162 INFO L175 Difference]: Start difference. First operand has 255 places, 253 transitions, 528 flow. Second operand 4 states and 1020 transitions. [2022-11-20 12:36:57,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 273 transitions, 709 flow [2022-11-20 12:36:57,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 273 transitions, 691 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-20 12:36:57,176 INFO L231 Difference]: Finished difference. Result has 253 places, 256 transitions, 566 flow [2022-11-20 12:36:57,176 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=566, PETRI_PLACES=253, PETRI_TRANSITIONS=256} [2022-11-20 12:36:57,177 INFO L288 CegarLoopForPetriNet]: 253 programPoint places, 0 predicate places. [2022-11-20 12:36:57,178 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 256 transitions, 566 flow [2022-11-20 12:36:57,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 238.75) internal successors, (955), 4 states have internal predecessors, (955), 0 states have call successors, (0), 0 states 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 12:36:57,179 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:36:57,179 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] [2022-11-20 12:36:57,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:36:57,181 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-11-20 12:36:57,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:36:57,182 INFO L85 PathProgramCache]: Analyzing trace with hash -306281460, now seen corresponding path program 1 times [2022-11-20 12:36:57,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:36:57,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532466216] [2022-11-20 12:36:57,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:36:57,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:36:57,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:57,325 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 12:36:57,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:36:57,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532466216] [2022-11-20 12:36:57,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532466216] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:36:57,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:36:57,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:36:57,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930468854] [2022-11-20 12:36:57,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:36:57,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:36:57,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:36:57,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:36:57,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:36:57,331 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 299 [2022-11-20 12:36:57,333 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 256 transitions, 566 flow. Second operand has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states 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 12:36:57,333 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:36:57,334 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 299 [2022-11-20 12:36:57,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:36:57,791 INFO L130 PetriNetUnfolder]: 189/1081 cut-off events. [2022-11-20 12:36:57,791 INFO L131 PetriNetUnfolder]: For 95/97 co-relation queries the response was YES. [2022-11-20 12:36:57,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1532 conditions, 1081 events. 189/1081 cut-off events. For 95/97 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8892 event pairs, 30 based on Foata normal form. 0/832 useless extension candidates. Maximal degree in co-relation 1334. Up to 145 conditions per place. [2022-11-20 12:36:57,806 INFO L137 encePairwiseOnDemand]: 289/299 looper letters, 50 selfloop transitions, 9 changer transitions 0/266 dead transitions. [2022-11-20 12:36:57,807 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 266 transitions, 707 flow [2022-11-20 12:36:57,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:36:57,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:36:57,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1719 transitions. [2022-11-20 12:36:57,812 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8213091256569517 [2022-11-20 12:36:57,812 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1719 transitions. [2022-11-20 12:36:57,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1719 transitions. [2022-11-20 12:36:57,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:36:57,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1719 transitions. [2022-11-20 12:36:57,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 245.57142857142858) internal successors, (1719), 7 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states 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 12:36:57,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states 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 12:36:57,826 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states 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 12:36:57,826 INFO L175 Difference]: Start difference. First operand has 253 places, 256 transitions, 566 flow. Second operand 7 states and 1719 transitions. [2022-11-20 12:36:57,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 266 transitions, 707 flow [2022-11-20 12:36:57,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 266 transitions, 707 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:36:57,834 INFO L231 Difference]: Finished difference. Result has 258 places, 255 transitions, 582 flow [2022-11-20 12:36:57,835 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=582, PETRI_PLACES=258, PETRI_TRANSITIONS=255} [2022-11-20 12:36:57,838 INFO L288 CegarLoopForPetriNet]: 253 programPoint places, 5 predicate places. [2022-11-20 12:36:57,838 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 255 transitions, 582 flow [2022-11-20 12:36:57,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states 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 12:36:57,839 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:36:57,840 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:36:57,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:36:57,840 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-11-20 12:36:57,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:36:57,841 INFO L85 PathProgramCache]: Analyzing trace with hash -904789845, now seen corresponding path program 1 times [2022-11-20 12:36:57,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:36:57,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006131320] [2022-11-20 12:36:57,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:36:57,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:36:57,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:57,971 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 12:36:57,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:36:57,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006131320] [2022-11-20 12:36:57,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006131320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:36:57,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:36:57,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:36:57,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008960943] [2022-11-20 12:36:57,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:36:57,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:36:57,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:36:57,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:36:57,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:36:57,976 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 299 [2022-11-20 12:36:57,977 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 255 transitions, 582 flow. Second operand has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states 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 12:36:57,978 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:36:57,978 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 299 [2022-11-20 12:36:57,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:36:58,321 INFO L130 PetriNetUnfolder]: 143/894 cut-off events. [2022-11-20 12:36:58,321 INFO L131 PetriNetUnfolder]: For 150/152 co-relation queries the response was YES. [2022-11-20 12:36:58,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1281 conditions, 894 events. 143/894 cut-off events. For 150/152 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6618 event pairs, 60 based on Foata normal form. 6/674 useless extension candidates. Maximal degree in co-relation 1217. Up to 161 conditions per place. [2022-11-20 12:36:58,335 INFO L137 encePairwiseOnDemand]: 286/299 looper letters, 58 selfloop transitions, 9 changer transitions 0/274 dead transitions. [2022-11-20 12:36:58,335 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 274 transitions, 756 flow [2022-11-20 12:36:58,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:36:58,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:36:58,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1019 transitions. [2022-11-20 12:36:58,338 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8520066889632107 [2022-11-20 12:36:58,338 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1019 transitions. [2022-11-20 12:36:58,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1019 transitions. [2022-11-20 12:36:58,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:36:58,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1019 transitions. [2022-11-20 12:36:58,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 254.75) internal successors, (1019), 4 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states 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 12:36:58,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 299.0) internal successors, (1495), 5 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states 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 12:36:58,345 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 299.0) internal successors, (1495), 5 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states 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 12:36:58,346 INFO L175 Difference]: Start difference. First operand has 258 places, 255 transitions, 582 flow. Second operand 4 states and 1019 transitions. [2022-11-20 12:36:58,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 274 transitions, 756 flow [2022-11-20 12:36:58,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 274 transitions, 738 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-20 12:36:58,352 INFO L231 Difference]: Finished difference. Result has 256 places, 258 transitions, 620 flow [2022-11-20 12:36:58,353 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=620, PETRI_PLACES=256, PETRI_TRANSITIONS=258} [2022-11-20 12:36:58,354 INFO L288 CegarLoopForPetriNet]: 253 programPoint places, 3 predicate places. [2022-11-20 12:36:58,354 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 258 transitions, 620 flow [2022-11-20 12:36:58,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states 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 12:36:58,355 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:36:58,355 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] [2022-11-20 12:36:58,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 12:36:58,355 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-11-20 12:36:58,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:36:58,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1011005399, now seen corresponding path program 1 times [2022-11-20 12:36:58,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:36:58,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532488846] [2022-11-20 12:36:58,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:36:58,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:36:58,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:58,491 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 12:36:58,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:36:58,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532488846] [2022-11-20 12:36:58,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532488846] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:36:58,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:36:58,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:36:58,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969654279] [2022-11-20 12:36:58,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:36:58,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:36:58,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:36:58,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:36:58,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:36:58,498 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 299 [2022-11-20 12:36:58,500 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 258 transitions, 620 flow. Second operand has 4 states, 4 states have (on average 239.25) internal successors, (957), 4 states have internal predecessors, (957), 0 states have call successors, (0), 0 states 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 12:36:58,500 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:36:58,501 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 299 [2022-11-20 12:36:58,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:36:58,762 INFO L130 PetriNetUnfolder]: 68/598 cut-off events. [2022-11-20 12:36:58,763 INFO L131 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2022-11-20 12:36:58,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 971 conditions, 598 events. 68/598 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2979 event pairs, 24 based on Foata normal form. 4/532 useless extension candidates. Maximal degree in co-relation 819. Up to 78 conditions per place. [2022-11-20 12:36:58,774 INFO L137 encePairwiseOnDemand]: 290/299 looper letters, 59 selfloop transitions, 7 changer transitions 0/273 dead transitions. [2022-11-20 12:36:58,775 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 273 transitions, 779 flow [2022-11-20 12:36:58,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:36:58,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:36:58,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1016 transitions. [2022-11-20 12:36:58,778 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8494983277591973 [2022-11-20 12:36:58,778 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1016 transitions. [2022-11-20 12:36:58,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1016 transitions. [2022-11-20 12:36:58,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:36:58,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1016 transitions. [2022-11-20 12:36:58,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 254.0) internal successors, (1016), 4 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states 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 12:36:58,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 299.0) internal successors, (1495), 5 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states 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 12:36:58,786 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 299.0) internal successors, (1495), 5 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states 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 12:36:58,786 INFO L175 Difference]: Start difference. First operand has 256 places, 258 transitions, 620 flow. Second operand 4 states and 1016 transitions. [2022-11-20 12:36:58,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 273 transitions, 779 flow [2022-11-20 12:36:58,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 273 transitions, 774 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:36:58,793 INFO L231 Difference]: Finished difference. Result has 258 places, 256 transitions, 617 flow [2022-11-20 12:36:58,794 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=603, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=617, PETRI_PLACES=258, PETRI_TRANSITIONS=256} [2022-11-20 12:36:58,795 INFO L288 CegarLoopForPetriNet]: 253 programPoint places, 5 predicate places. [2022-11-20 12:36:58,795 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 256 transitions, 617 flow [2022-11-20 12:36:58,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 239.25) internal successors, (957), 4 states have internal predecessors, (957), 0 states have call successors, (0), 0 states 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 12:36:58,796 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:36:58,796 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] [2022-11-20 12:36:58,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 12:36:58,797 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-11-20 12:36:58,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:36:58,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1276397034, now seen corresponding path program 1 times [2022-11-20 12:36:58,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:36:58,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122514764] [2022-11-20 12:36:58,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:36:58,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:36:58,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:58,884 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 12:36:58,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:36:58,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122514764] [2022-11-20 12:36:58,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122514764] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:36:58,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:36:58,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:36:58,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977373995] [2022-11-20 12:36:58,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:36:58,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:36:58,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:36:58,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:36:58,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:36:58,890 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 299 [2022-11-20 12:36:58,892 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 256 transitions, 617 flow. Second operand has 6 states, 6 states have (on average 239.16666666666666) internal successors, (1435), 6 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states 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 12:36:58,892 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:36:58,892 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 299 [2022-11-20 12:36:58,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:36:59,396 INFO L130 PetriNetUnfolder]: 185/1815 cut-off events. [2022-11-20 12:36:59,397 INFO L131 PetriNetUnfolder]: For 102/102 co-relation queries the response was YES. [2022-11-20 12:36:59,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2526 conditions, 1815 events. 185/1815 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 14462 event pairs, 47 based on Foata normal form. 0/1520 useless extension candidates. Maximal degree in co-relation 1837. Up to 174 conditions per place. [2022-11-20 12:36:59,414 INFO L137 encePairwiseOnDemand]: 289/299 looper letters, 42 selfloop transitions, 10 changer transitions 0/261 dead transitions. [2022-11-20 12:36:59,414 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 261 transitions, 737 flow [2022-11-20 12:36:59,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:36:59,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:36:59,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1711 transitions. [2022-11-20 12:36:59,419 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8174868609651218 [2022-11-20 12:36:59,419 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1711 transitions. [2022-11-20 12:36:59,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1711 transitions. [2022-11-20 12:36:59,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:36:59,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1711 transitions. [2022-11-20 12:36:59,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 244.42857142857142) internal successors, (1711), 7 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states 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 12:36:59,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states 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 12:36:59,430 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states 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 12:36:59,430 INFO L175 Difference]: Start difference. First operand has 258 places, 256 transitions, 617 flow. Second operand 7 states and 1711 transitions. [2022-11-20 12:36:59,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 261 transitions, 737 flow [2022-11-20 12:36:59,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 261 transitions, 726 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:36:59,442 INFO L231 Difference]: Finished difference. Result has 261 places, 255 transitions, 624 flow [2022-11-20 12:36:59,443 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=624, PETRI_PLACES=261, PETRI_TRANSITIONS=255} [2022-11-20 12:36:59,444 INFO L288 CegarLoopForPetriNet]: 253 programPoint places, 8 predicate places. [2022-11-20 12:36:59,444 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 255 transitions, 624 flow [2022-11-20 12:36:59,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 239.16666666666666) internal successors, (1435), 6 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states 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 12:36:59,445 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:36:59,445 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] [2022-11-20 12:36:59,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 12:36:59,446 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-11-20 12:36:59,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:36:59,446 INFO L85 PathProgramCache]: Analyzing trace with hash -867745107, now seen corresponding path program 1 times [2022-11-20 12:36:59,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:36:59,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59029890] [2022-11-20 12:36:59,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:36:59,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:36:59,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:59,554 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 12:36:59,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:36:59,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59029890] [2022-11-20 12:36:59,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59029890] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:36:59,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:36:59,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:36:59,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316626644] [2022-11-20 12:36:59,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:36:59,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:36:59,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:36:59,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:36:59,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:36:59,559 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 299 [2022-11-20 12:36:59,560 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 255 transitions, 624 flow. Second operand has 5 states, 5 states have (on average 231.6) internal successors, (1158), 5 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states 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 12:36:59,561 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:36:59,561 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 299 [2022-11-20 12:36:59,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:36:59,875 INFO L130 PetriNetUnfolder]: 83/635 cut-off events. [2022-11-20 12:36:59,876 INFO L131 PetriNetUnfolder]: For 51/51 co-relation queries the response was YES. [2022-11-20 12:36:59,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1093 conditions, 635 events. 83/635 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3397 event pairs, 31 based on Foata normal form. 0/569 useless extension candidates. Maximal degree in co-relation 941. Up to 103 conditions per place. [2022-11-20 12:36:59,891 INFO L137 encePairwiseOnDemand]: 284/299 looper letters, 68 selfloop transitions, 15 changer transitions 0/282 dead transitions. [2022-11-20 12:36:59,891 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 282 transitions, 847 flow [2022-11-20 12:36:59,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:36:59,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:36:59,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1459 transitions. [2022-11-20 12:36:59,896 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8132664437012264 [2022-11-20 12:36:59,896 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1459 transitions. [2022-11-20 12:36:59,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1459 transitions. [2022-11-20 12:36:59,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:36:59,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1459 transitions. [2022-11-20 12:36:59,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 243.16666666666666) internal successors, (1459), 6 states have internal predecessors, (1459), 0 states have call successors, (0), 0 states 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 12:36:59,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 299.0) internal successors, (2093), 7 states have internal predecessors, (2093), 0 states have call successors, (0), 0 states 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 12:36:59,905 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 299.0) internal successors, (2093), 7 states have internal predecessors, (2093), 0 states have call successors, (0), 0 states 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 12:36:59,906 INFO L175 Difference]: Start difference. First operand has 261 places, 255 transitions, 624 flow. Second operand 6 states and 1459 transitions. [2022-11-20 12:36:59,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 282 transitions, 847 flow [2022-11-20 12:36:59,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 282 transitions, 820 flow, removed 2 selfloop flow, removed 7 redundant places. [2022-11-20 12:36:59,913 INFO L231 Difference]: Finished difference. Result has 260 places, 261 transitions, 669 flow [2022-11-20 12:36:59,914 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=587, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=669, PETRI_PLACES=260, PETRI_TRANSITIONS=261} [2022-11-20 12:36:59,915 INFO L288 CegarLoopForPetriNet]: 253 programPoint places, 7 predicate places. [2022-11-20 12:36:59,915 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 261 transitions, 669 flow [2022-11-20 12:36:59,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 231.6) internal successors, (1158), 5 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states 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 12:36:59,916 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:36:59,916 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] [2022-11-20 12:36:59,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 12:36:59,917 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-11-20 12:36:59,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:36:59,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1148288366, now seen corresponding path program 1 times [2022-11-20 12:36:59,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:36:59,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166273884] [2022-11-20 12:36:59,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:36:59,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:36:59,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:59,986 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 12:36:59,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:36:59,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166273884] [2022-11-20 12:36:59,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166273884] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:36:59,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:36:59,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:36:59,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051612029] [2022-11-20 12:36:59,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:36:59,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:36:59,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:36:59,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:36:59,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:36:59,990 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 299 [2022-11-20 12:36:59,991 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 261 transitions, 669 flow. Second operand has 4 states, 4 states have (on average 239.5) internal successors, (958), 4 states have internal predecessors, (958), 0 states have call successors, (0), 0 states 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 12:36:59,991 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:36:59,991 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 299 [2022-11-20 12:36:59,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:37:00,295 INFO L130 PetriNetUnfolder]: 126/826 cut-off events. [2022-11-20 12:37:00,295 INFO L131 PetriNetUnfolder]: For 214/216 co-relation queries the response was YES. [2022-11-20 12:37:00,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1246 conditions, 826 events. 126/826 cut-off events. For 214/216 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5839 event pairs, 20 based on Foata normal form. 6/636 useless extension candidates. Maximal degree in co-relation 1181. Up to 128 conditions per place. [2022-11-20 12:37:00,309 INFO L137 encePairwiseOnDemand]: 290/299 looper letters, 58 selfloop transitions, 7 changer transitions 0/275 dead transitions. [2022-11-20 12:37:00,309 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 275 transitions, 821 flow [2022-11-20 12:37:00,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:37:00,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:37:00,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1015 transitions. [2022-11-20 12:37:00,312 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8486622073578596 [2022-11-20 12:37:00,313 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1015 transitions. [2022-11-20 12:37:00,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1015 transitions. [2022-11-20 12:37:00,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:37:00,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1015 transitions. [2022-11-20 12:37:00,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 253.75) internal successors, (1015), 4 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states 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 12:37:00,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 299.0) internal successors, (1495), 5 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states 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 12:37:00,320 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 299.0) internal successors, (1495), 5 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states 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 12:37:00,320 INFO L175 Difference]: Start difference. First operand has 260 places, 261 transitions, 669 flow. Second operand 4 states and 1015 transitions. [2022-11-20 12:37:00,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 275 transitions, 821 flow [2022-11-20 12:37:00,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 275 transitions, 802 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-11-20 12:37:00,327 INFO L231 Difference]: Finished difference. Result has 259 places, 259 transitions, 652 flow [2022-11-20 12:37:00,328 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=652, PETRI_PLACES=259, PETRI_TRANSITIONS=259} [2022-11-20 12:37:00,332 INFO L288 CegarLoopForPetriNet]: 253 programPoint places, 6 predicate places. [2022-11-20 12:37:00,332 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 259 transitions, 652 flow [2022-11-20 12:37:00,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 239.5) internal successors, (958), 4 states have internal predecessors, (958), 0 states have call successors, (0), 0 states 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 12:37:00,333 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:37:00,334 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] [2022-11-20 12:37:00,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 12:37:00,334 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-11-20 12:37:00,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:37:00,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1659081777, now seen corresponding path program 1 times [2022-11-20 12:37:00,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:37:00,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488163918] [2022-11-20 12:37:00,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:37:00,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:37:00,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:37:00,521 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 12:37:00,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:37:00,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488163918] [2022-11-20 12:37:00,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488163918] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:37:00,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:37:00,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:37:00,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052850640] [2022-11-20 12:37:00,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:37:00,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:37:00,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:37:00,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:37:00,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:37:00,527 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 299 [2022-11-20 12:37:00,530 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 259 transitions, 652 flow. Second operand has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states 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 12:37:00,530 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:37:00,531 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 299 [2022-11-20 12:37:00,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:37:01,066 INFO L130 PetriNetUnfolder]: 225/1681 cut-off events. [2022-11-20 12:37:01,066 INFO L131 PetriNetUnfolder]: For 160/160 co-relation queries the response was YES. [2022-11-20 12:37:01,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2583 conditions, 1681 events. 225/1681 cut-off events. For 160/160 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 14195 event pairs, 58 based on Foata normal form. 0/1410 useless extension candidates. Maximal degree in co-relation 1818. Up to 141 conditions per place. [2022-11-20 12:37:01,093 INFO L137 encePairwiseOnDemand]: 284/299 looper letters, 62 selfloop transitions, 17 changer transitions 0/276 dead transitions. [2022-11-20 12:37:01,093 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 276 transitions, 858 flow [2022-11-20 12:37:01,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:37:01,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 12:37:01,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2570 transitions. [2022-11-20 12:37:01,100 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7813925205229553 [2022-11-20 12:37:01,100 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2570 transitions. [2022-11-20 12:37:01,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2570 transitions. [2022-11-20 12:37:01,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:37:01,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2570 transitions. [2022-11-20 12:37:01,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 233.63636363636363) internal successors, (2570), 11 states have internal predecessors, (2570), 0 states have call successors, (0), 0 states 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 12:37:01,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 299.0) internal successors, (3588), 12 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states 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 12:37:01,128 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 299.0) internal successors, (3588), 12 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states 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 12:37:01,128 INFO L175 Difference]: Start difference. First operand has 259 places, 259 transitions, 652 flow. Second operand 11 states and 2570 transitions. [2022-11-20 12:37:01,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 276 transitions, 858 flow [2022-11-20 12:37:01,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 276 transitions, 847 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:37:01,135 INFO L231 Difference]: Finished difference. Result has 269 places, 260 transitions, 690 flow [2022-11-20 12:37:01,136 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=641, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=690, PETRI_PLACES=269, PETRI_TRANSITIONS=260} [2022-11-20 12:37:01,137 INFO L288 CegarLoopForPetriNet]: 253 programPoint places, 16 predicate places. [2022-11-20 12:37:01,137 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 260 transitions, 690 flow [2022-11-20 12:37:01,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states 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 12:37:01,142 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:37:01,142 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] [2022-11-20 12:37:01,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 12:37:01,142 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-11-20 12:37:01,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:37:01,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1237200138, now seen corresponding path program 1 times [2022-11-20 12:37:01,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:37:01,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849056675] [2022-11-20 12:37:01,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:37:01,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:37:01,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:37:01,222 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 12:37:01,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:37:01,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849056675] [2022-11-20 12:37:01,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849056675] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:37:01,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:37:01,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:37:01,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422735219] [2022-11-20 12:37:01,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:37:01,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:37:01,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:37:01,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:37:01,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:37:01,227 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 299 [2022-11-20 12:37:01,229 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 260 transitions, 690 flow. Second operand has 6 states, 6 states have (on average 239.33333333333334) internal successors, (1436), 6 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states 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 12:37:01,229 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:37:01,229 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 299 [2022-11-20 12:37:01,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:37:01,635 INFO L130 PetriNetUnfolder]: 211/1313 cut-off events. [2022-11-20 12:37:01,635 INFO L131 PetriNetUnfolder]: For 290/349 co-relation queries the response was YES. [2022-11-20 12:37:01,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2167 conditions, 1313 events. 211/1313 cut-off events. For 290/349 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 11385 event pairs, 46 based on Foata normal form. 0/1058 useless extension candidates. Maximal degree in co-relation 1938. Up to 214 conditions per place. [2022-11-20 12:37:01,652 INFO L137 encePairwiseOnDemand]: 289/299 looper letters, 42 selfloop transitions, 10 changer transitions 0/265 dead transitions. [2022-11-20 12:37:01,653 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 265 transitions, 816 flow [2022-11-20 12:37:01,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:37:01,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:37:01,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1711 transitions. [2022-11-20 12:37:01,659 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8174868609651218 [2022-11-20 12:37:01,659 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1711 transitions. [2022-11-20 12:37:01,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1711 transitions. [2022-11-20 12:37:01,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:37:01,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1711 transitions. [2022-11-20 12:37:01,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 244.42857142857142) internal successors, (1711), 7 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states 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 12:37:01,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states 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 12:37:01,673 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states 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 12:37:01,673 INFO L175 Difference]: Start difference. First operand has 269 places, 260 transitions, 690 flow. Second operand 7 states and 1711 transitions. [2022-11-20 12:37:01,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 265 transitions, 816 flow [2022-11-20 12:37:01,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 265 transitions, 787 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-20 12:37:01,682 INFO L231 Difference]: Finished difference. Result has 268 places, 259 transitions, 685 flow [2022-11-20 12:37:01,682 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=665, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=685, PETRI_PLACES=268, PETRI_TRANSITIONS=259} [2022-11-20 12:37:01,683 INFO L288 CegarLoopForPetriNet]: 253 programPoint places, 15 predicate places. [2022-11-20 12:37:01,684 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 259 transitions, 685 flow [2022-11-20 12:37:01,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 239.33333333333334) internal successors, (1436), 6 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states 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 12:37:01,685 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:37:01,685 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] [2022-11-20 12:37:01,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 12:37:01,686 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-11-20 12:37:01,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:37:01,686 INFO L85 PathProgramCache]: Analyzing trace with hash 108073214, now seen corresponding path program 1 times [2022-11-20 12:37:01,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:37:01,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105888804] [2022-11-20 12:37:01,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:37:01,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:37:01,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:37:01,836 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 12:37:01,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:37:01,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105888804] [2022-11-20 12:37:01,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105888804] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:37:01,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:37:01,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:37:01,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176324967] [2022-11-20 12:37:01,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:37:01,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:37:01,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:37:01,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:37:01,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:37:01,841 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 299 [2022-11-20 12:37:01,844 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 259 transitions, 685 flow. Second operand has 8 states, 8 states have (on average 229.125) internal successors, (1833), 8 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states 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 12:37:01,844 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:37:01,844 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 299 [2022-11-20 12:37:01,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:37:02,309 INFO L130 PetriNetUnfolder]: 196/1093 cut-off events. [2022-11-20 12:37:02,309 INFO L131 PetriNetUnfolder]: For 267/267 co-relation queries the response was YES. [2022-11-20 12:37:02,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2034 conditions, 1093 events. 196/1093 cut-off events. For 267/267 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8962 event pairs, 54 based on Foata normal form. 0/924 useless extension candidates. Maximal degree in co-relation 1439. Up to 137 conditions per place. [2022-11-20 12:37:02,329 INFO L137 encePairwiseOnDemand]: 283/299 looper letters, 61 selfloop transitions, 16 changer transitions 0/277 dead transitions. [2022-11-20 12:37:02,329 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 277 transitions, 905 flow [2022-11-20 12:37:02,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:37:02,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 12:37:02,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2572 transitions. [2022-11-20 12:37:02,335 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7820006080875647 [2022-11-20 12:37:02,336 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2572 transitions. [2022-11-20 12:37:02,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2572 transitions. [2022-11-20 12:37:02,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:37:02,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2572 transitions. [2022-11-20 12:37:02,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 233.8181818181818) internal successors, (2572), 11 states have internal predecessors, (2572), 0 states have call successors, (0), 0 states 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 12:37:02,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 299.0) internal successors, (3588), 12 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states 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 12:37:02,352 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 299.0) internal successors, (3588), 12 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states 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 12:37:02,352 INFO L175 Difference]: Start difference. First operand has 268 places, 259 transitions, 685 flow. Second operand 11 states and 2572 transitions. [2022-11-20 12:37:02,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 277 transitions, 905 flow [2022-11-20 12:37:02,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 277 transitions, 871 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-20 12:37:02,360 INFO L231 Difference]: Finished difference. Result has 274 places, 260 transitions, 710 flow [2022-11-20 12:37:02,361 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=665, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=710, PETRI_PLACES=274, PETRI_TRANSITIONS=260} [2022-11-20 12:37:02,361 INFO L288 CegarLoopForPetriNet]: 253 programPoint places, 21 predicate places. [2022-11-20 12:37:02,361 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 260 transitions, 710 flow [2022-11-20 12:37:02,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 229.125) internal successors, (1833), 8 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states 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 12:37:02,371 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:37:02,372 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] [2022-11-20 12:37:02,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 12:37:02,372 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-11-20 12:37:02,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:37:02,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1631963545, now seen corresponding path program 1 times [2022-11-20 12:37:02,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:37:02,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670392727] [2022-11-20 12:37:02,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:37:02,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:37:02,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:37:02,457 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 12:37:02,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:37:02,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670392727] [2022-11-20 12:37:02,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670392727] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:37:02,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:37:02,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:37:02,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824011490] [2022-11-20 12:37:02,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:37:02,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:37:02,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:37:02,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:37:02,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:37:02,461 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 299 [2022-11-20 12:37:02,463 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 260 transitions, 710 flow. Second operand has 5 states, 5 states have (on average 231.8) internal successors, (1159), 5 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states 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 12:37:02,463 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:37:02,463 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 299 [2022-11-20 12:37:02,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:37:02,809 INFO L130 PetriNetUnfolder]: 156/894 cut-off events. [2022-11-20 12:37:02,810 INFO L131 PetriNetUnfolder]: For 227/229 co-relation queries the response was YES. [2022-11-20 12:37:02,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1416 conditions, 894 events. 156/894 cut-off events. For 227/229 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 6744 event pairs, 36 based on Foata normal form. 0/683 useless extension candidates. Maximal degree in co-relation 1345. Up to 169 conditions per place. [2022-11-20 12:37:02,827 INFO L137 encePairwiseOnDemand]: 284/299 looper letters, 67 selfloop transitions, 15 changer transitions 0/286 dead transitions. [2022-11-20 12:37:02,827 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 286 transitions, 926 flow [2022-11-20 12:37:02,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:37:02,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:37:02,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1458 transitions. [2022-11-20 12:37:02,832 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8127090301003345 [2022-11-20 12:37:02,832 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1458 transitions. [2022-11-20 12:37:02,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1458 transitions. [2022-11-20 12:37:02,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:37:02,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1458 transitions. [2022-11-20 12:37:02,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 243.0) internal successors, (1458), 6 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states 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 12:37:02,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 299.0) internal successors, (2093), 7 states have internal predecessors, (2093), 0 states have call successors, (0), 0 states 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 12:37:02,842 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 299.0) internal successors, (2093), 7 states have internal predecessors, (2093), 0 states have call successors, (0), 0 states 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 12:37:02,842 INFO L175 Difference]: Start difference. First operand has 274 places, 260 transitions, 710 flow. Second operand 6 states and 1458 transitions. [2022-11-20 12:37:02,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 286 transitions, 926 flow [2022-11-20 12:37:02,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 286 transitions, 894 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-11-20 12:37:02,850 INFO L231 Difference]: Finished difference. Result has 273 places, 266 transitions, 752 flow [2022-11-20 12:37:02,851 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=752, PETRI_PLACES=273, PETRI_TRANSITIONS=266} [2022-11-20 12:37:02,852 INFO L288 CegarLoopForPetriNet]: 253 programPoint places, 20 predicate places. [2022-11-20 12:37:02,852 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 266 transitions, 752 flow [2022-11-20 12:37:02,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 231.8) internal successors, (1159), 5 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states 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 12:37:02,853 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:37:02,853 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] [2022-11-20 12:37:02,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 12:37:02,854 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-11-20 12:37:02,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:37:02,854 INFO L85 PathProgramCache]: Analyzing trace with hash 552114978, now seen corresponding path program 1 times [2022-11-20 12:37:02,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:37:02,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703945050] [2022-11-20 12:37:02,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:37:02,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:37:02,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:37:02,981 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 12:37:02,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:37:02,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703945050] [2022-11-20 12:37:02,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703945050] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:37:02,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:37:02,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:37:02,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498321356] [2022-11-20 12:37:02,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:37:02,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:37:02,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:37:02,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:37:02,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:37:02,986 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 299 [2022-11-20 12:37:02,988 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 266 transitions, 752 flow. Second operand has 6 states, 6 states have (on average 220.33333333333334) internal successors, (1322), 6 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states 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 12:37:02,988 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:37:02,988 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 299 [2022-11-20 12:37:02,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:37:03,389 INFO L130 PetriNetUnfolder]: 114/675 cut-off events. [2022-11-20 12:37:03,389 INFO L131 PetriNetUnfolder]: For 120/120 co-relation queries the response was YES. [2022-11-20 12:37:03,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1408 conditions, 675 events. 114/675 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3873 event pairs, 61 based on Foata normal form. 2/623 useless extension candidates. Maximal degree in co-relation 1304. Up to 188 conditions per place. [2022-11-20 12:37:03,404 INFO L137 encePairwiseOnDemand]: 282/299 looper letters, 73 selfloop transitions, 16 changer transitions 0/281 dead transitions. [2022-11-20 12:37:03,404 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 281 transitions, 969 flow [2022-11-20 12:37:03,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:37:03,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:37:03,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1602 transitions. [2022-11-20 12:37:03,409 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7654085045389393 [2022-11-20 12:37:03,409 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1602 transitions. [2022-11-20 12:37:03,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1602 transitions. [2022-11-20 12:37:03,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:37:03,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1602 transitions. [2022-11-20 12:37:03,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 228.85714285714286) internal successors, (1602), 7 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states 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 12:37:03,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states 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 12:37:03,419 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states 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 12:37:03,420 INFO L175 Difference]: Start difference. First operand has 273 places, 266 transitions, 752 flow. Second operand 7 states and 1602 transitions. [2022-11-20 12:37:03,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 281 transitions, 969 flow [2022-11-20 12:37:03,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 281 transitions, 951 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-11-20 12:37:03,428 INFO L231 Difference]: Finished difference. Result has 279 places, 274 transitions, 829 flow [2022-11-20 12:37:03,428 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=829, PETRI_PLACES=279, PETRI_TRANSITIONS=274} [2022-11-20 12:37:03,429 INFO L288 CegarLoopForPetriNet]: 253 programPoint places, 26 predicate places. [2022-11-20 12:37:03,429 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 274 transitions, 829 flow [2022-11-20 12:37:03,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 220.33333333333334) internal successors, (1322), 6 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states 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 12:37:03,430 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:37:03,430 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] [2022-11-20 12:37:03,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 12:37:03,431 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-11-20 12:37:03,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:37:03,432 INFO L85 PathProgramCache]: Analyzing trace with hash 662726100, now seen corresponding path program 1 times [2022-11-20 12:37:03,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:37:03,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548802887] [2022-11-20 12:37:03,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:37:03,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:37:03,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:37:03,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:37:03,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:37:03,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548802887] [2022-11-20 12:37:03,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548802887] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:37:03,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:37:03,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:37:03,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975459578] [2022-11-20 12:37:03,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:37:03,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:37:03,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:37:03,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:37:03,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:37:03,557 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 299 [2022-11-20 12:37:03,559 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 274 transitions, 829 flow. Second operand has 6 states, 6 states have (on average 220.5) internal successors, (1323), 6 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states 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 12:37:03,559 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:37:03,559 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 299 [2022-11-20 12:37:03,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:37:03,959 INFO L130 PetriNetUnfolder]: 108/665 cut-off events. [2022-11-20 12:37:03,959 INFO L131 PetriNetUnfolder]: For 185/185 co-relation queries the response was YES. [2022-11-20 12:37:03,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1481 conditions, 665 events. 108/665 cut-off events. For 185/185 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3769 event pairs, 48 based on Foata normal form. 2/639 useless extension candidates. Maximal degree in co-relation 1375. Up to 153 conditions per place. [2022-11-20 12:37:03,975 INFO L137 encePairwiseOnDemand]: 281/299 looper letters, 87 selfloop transitions, 19 changer transitions 0/302 dead transitions. [2022-11-20 12:37:03,975 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 302 transitions, 1144 flow [2022-11-20 12:37:03,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:37:03,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:37:03,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1616 transitions. [2022-11-20 12:37:03,980 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7720974677496416 [2022-11-20 12:37:03,981 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1616 transitions. [2022-11-20 12:37:03,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1616 transitions. [2022-11-20 12:37:03,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:37:03,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1616 transitions. [2022-11-20 12:37:03,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 230.85714285714286) internal successors, (1616), 7 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states 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 12:37:03,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states 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 12:37:03,992 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states 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 12:37:03,992 INFO L175 Difference]: Start difference. First operand has 279 places, 274 transitions, 829 flow. Second operand 7 states and 1616 transitions. [2022-11-20 12:37:03,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 302 transitions, 1144 flow [2022-11-20 12:37:03,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 302 transitions, 1133 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:37:04,002 INFO L231 Difference]: Finished difference. Result has 287 places, 285 transitions, 952 flow [2022-11-20 12:37:04,002 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=816, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=952, PETRI_PLACES=287, PETRI_TRANSITIONS=285} [2022-11-20 12:37:04,003 INFO L288 CegarLoopForPetriNet]: 253 programPoint places, 34 predicate places. [2022-11-20 12:37:04,003 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 285 transitions, 952 flow [2022-11-20 12:37:04,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 220.5) internal successors, (1323), 6 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states 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 12:37:04,004 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:37:04,005 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] [2022-11-20 12:37:04,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 12:37:04,005 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-11-20 12:37:04,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:37:04,006 INFO L85 PathProgramCache]: Analyzing trace with hash -258605445, now seen corresponding path program 1 times [2022-11-20 12:37:04,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:37:04,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873401709] [2022-11-20 12:37:04,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:37:04,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:37:04,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:37:04,140 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 12:37:04,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:37:04,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873401709] [2022-11-20 12:37:04,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873401709] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:37:04,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:37:04,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:37:04,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631459075] [2022-11-20 12:37:04,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:37:04,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:37:04,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:37:04,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:37:04,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:37:04,145 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 299 [2022-11-20 12:37:04,148 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 285 transitions, 952 flow. Second operand has 8 states, 8 states have (on average 229.125) internal successors, (1833), 8 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states 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 12:37:04,148 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:37:04,148 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 299 [2022-11-20 12:37:04,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:37:04,701 INFO L130 PetriNetUnfolder]: 282/1452 cut-off events. [2022-11-20 12:37:04,702 INFO L131 PetriNetUnfolder]: For 409/411 co-relation queries the response was YES. [2022-11-20 12:37:04,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2553 conditions, 1452 events. 282/1452 cut-off events. For 409/411 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 13661 event pairs, 64 based on Foata normal form. 0/1182 useless extension candidates. Maximal degree in co-relation 2230. Up to 185 conditions per place. [2022-11-20 12:37:04,727 INFO L137 encePairwiseOnDemand]: 284/299 looper letters, 62 selfloop transitions, 17 changer transitions 0/302 dead transitions. [2022-11-20 12:37:04,728 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 302 transitions, 1151 flow [2022-11-20 12:37:04,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:37:04,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 12:37:04,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2570 transitions. [2022-11-20 12:37:04,735 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7813925205229553 [2022-11-20 12:37:04,736 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2570 transitions. [2022-11-20 12:37:04,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2570 transitions. [2022-11-20 12:37:04,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:37:04,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2570 transitions. [2022-11-20 12:37:04,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 233.63636363636363) internal successors, (2570), 11 states have internal predecessors, (2570), 0 states have call successors, (0), 0 states 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 12:37:04,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 299.0) internal successors, (3588), 12 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states 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 12:37:04,752 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 299.0) internal successors, (3588), 12 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states 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 12:37:04,753 INFO L175 Difference]: Start difference. First operand has 287 places, 285 transitions, 952 flow. Second operand 11 states and 2570 transitions. [2022-11-20 12:37:04,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 302 transitions, 1151 flow [2022-11-20 12:37:04,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 302 transitions, 1144 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:37:04,763 INFO L231 Difference]: Finished difference. Result has 298 places, 286 transitions, 994 flow [2022-11-20 12:37:04,764 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=945, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=994, PETRI_PLACES=298, PETRI_TRANSITIONS=286} [2022-11-20 12:37:04,765 INFO L288 CegarLoopForPetriNet]: 253 programPoint places, 45 predicate places. [2022-11-20 12:37:04,765 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 286 transitions, 994 flow [2022-11-20 12:37:04,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 229.125) internal successors, (1833), 8 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states 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 12:37:04,766 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:37:04,766 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] [2022-11-20 12:37:04,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 12:37:04,767 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-11-20 12:37:04,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:37:04,767 INFO L85 PathProgramCache]: Analyzing trace with hash 573166649, now seen corresponding path program 1 times [2022-11-20 12:37:04,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:37:04,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112351971] [2022-11-20 12:37:04,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:37:04,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:37:04,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:37:04,904 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 12:37:04,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:37:04,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112351971] [2022-11-20 12:37:04,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112351971] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:37:04,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:37:04,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:37:04,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465575509] [2022-11-20 12:37:04,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:37:04,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:37:04,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:37:04,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:37:04,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:37:04,909 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 299 [2022-11-20 12:37:04,911 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 286 transitions, 994 flow. Second operand has 8 states, 8 states have (on average 229.25) internal successors, (1834), 8 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states 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 12:37:04,911 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:37:04,911 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 299 [2022-11-20 12:37:04,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:37:05,509 INFO L130 PetriNetUnfolder]: 260/1515 cut-off events. [2022-11-20 12:37:05,509 INFO L131 PetriNetUnfolder]: For 514/516 co-relation queries the response was YES. [2022-11-20 12:37:05,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2761 conditions, 1515 events. 260/1515 cut-off events. For 514/516 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 13851 event pairs, 66 based on Foata normal form. 0/1282 useless extension candidates. Maximal degree in co-relation 2459. Up to 180 conditions per place. [2022-11-20 12:37:05,535 INFO L137 encePairwiseOnDemand]: 283/299 looper letters, 61 selfloop transitions, 16 changer transitions 0/304 dead transitions. [2022-11-20 12:37:05,536 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 304 transitions, 1193 flow [2022-11-20 12:37:05,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:37:05,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 12:37:05,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2572 transitions. [2022-11-20 12:37:05,543 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7820006080875647 [2022-11-20 12:37:05,544 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2572 transitions. [2022-11-20 12:37:05,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2572 transitions. [2022-11-20 12:37:05,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:37:05,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2572 transitions. [2022-11-20 12:37:05,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 233.8181818181818) internal successors, (2572), 11 states have internal predecessors, (2572), 0 states have call successors, (0), 0 states 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 12:37:05,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 299.0) internal successors, (3588), 12 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states 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 12:37:05,562 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 299.0) internal successors, (3588), 12 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states 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 12:37:05,563 INFO L175 Difference]: Start difference. First operand has 298 places, 286 transitions, 994 flow. Second operand 11 states and 2572 transitions. [2022-11-20 12:37:05,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 304 transitions, 1193 flow [2022-11-20 12:37:05,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 304 transitions, 1170 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-20 12:37:05,575 INFO L231 Difference]: Finished difference. Result has 304 places, 287 transitions, 1016 flow [2022-11-20 12:37:05,577 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=971, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1016, PETRI_PLACES=304, PETRI_TRANSITIONS=287} [2022-11-20 12:37:05,577 INFO L288 CegarLoopForPetriNet]: 253 programPoint places, 51 predicate places. [2022-11-20 12:37:05,578 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 287 transitions, 1016 flow [2022-11-20 12:37:05,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 229.25) internal successors, (1834), 8 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states 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 12:37:05,579 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:37:05,579 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] [2022-11-20 12:37:05,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 12:37:05,579 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-11-20 12:37:05,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:37:05,580 INFO L85 PathProgramCache]: Analyzing trace with hash 830310525, now seen corresponding path program 1 times [2022-11-20 12:37:05,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:37:05,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077676448] [2022-11-20 12:37:05,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:37:05,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:37:05,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:37:05,727 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 12:37:05,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:37:05,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077676448] [2022-11-20 12:37:05,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077676448] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:37:05,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:37:05,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:37:05,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684664144] [2022-11-20 12:37:05,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:37:05,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:37:05,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:37:05,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:37:05,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:37:05,741 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 299 [2022-11-20 12:37:05,743 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 287 transitions, 1016 flow. Second operand has 6 states, 6 states have (on average 220.5) internal successors, (1323), 6 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states 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 12:37:05,743 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:37:05,743 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 299 [2022-11-20 12:37:05,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:37:06,219 INFO L130 PetriNetUnfolder]: 222/959 cut-off events. [2022-11-20 12:37:06,220 INFO L131 PetriNetUnfolder]: For 471/473 co-relation queries the response was YES. [2022-11-20 12:37:06,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1919 conditions, 959 events. 222/959 cut-off events. For 471/473 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 7914 event pairs, 96 based on Foata normal form. 6/730 useless extension candidates. Maximal degree in co-relation 1834. Up to 313 conditions per place. [2022-11-20 12:37:06,239 INFO L137 encePairwiseOnDemand]: 282/299 looper letters, 72 selfloop transitions, 16 changer transitions 1/302 dead transitions. [2022-11-20 12:37:06,239 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 302 transitions, 1228 flow [2022-11-20 12:37:06,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:37:06,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:37:06,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1602 transitions. [2022-11-20 12:37:06,243 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7654085045389393 [2022-11-20 12:37:06,244 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1602 transitions. [2022-11-20 12:37:06,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1602 transitions. [2022-11-20 12:37:06,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:37:06,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1602 transitions. [2022-11-20 12:37:06,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 228.85714285714286) internal successors, (1602), 7 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states 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 12:37:06,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states 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 12:37:06,256 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states 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 12:37:06,256 INFO L175 Difference]: Start difference. First operand has 304 places, 287 transitions, 1016 flow. Second operand 7 states and 1602 transitions. [2022-11-20 12:37:06,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 302 transitions, 1228 flow [2022-11-20 12:37:06,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 302 transitions, 1201 flow, removed 1 selfloop flow, removed 7 redundant places. [2022-11-20 12:37:06,267 INFO L231 Difference]: Finished difference. Result has 307 places, 295 transitions, 1084 flow [2022-11-20 12:37:06,268 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=985, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1084, PETRI_PLACES=307, PETRI_TRANSITIONS=295} [2022-11-20 12:37:06,268 INFO L288 CegarLoopForPetriNet]: 253 programPoint places, 54 predicate places. [2022-11-20 12:37:06,268 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 295 transitions, 1084 flow [2022-11-20 12:37:06,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 220.5) internal successors, (1323), 6 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states 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 12:37:06,269 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:37:06,270 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 12:37:06,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 12:37:06,270 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-11-20 12:37:06,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:37:06,271 INFO L85 PathProgramCache]: Analyzing trace with hash 696853568, now seen corresponding path program 1 times [2022-11-20 12:37:06,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:37:06,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39381915] [2022-11-20 12:37:06,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:37:06,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:37:06,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:37:06,398 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 12:37:06,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:37:06,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39381915] [2022-11-20 12:37:06,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39381915] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:37:06,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:37:06,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:37:06,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609195570] [2022-11-20 12:37:06,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:37:06,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:37:06,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:37:06,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:37:06,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:37:06,403 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 299 [2022-11-20 12:37:06,405 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 295 transitions, 1084 flow. Second operand has 6 states, 6 states have (on average 220.66666666666666) internal successors, (1324), 6 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states 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 12:37:06,405 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:37:06,405 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 299 [2022-11-20 12:37:06,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:37:06,957 INFO L130 PetriNetUnfolder]: 210/959 cut-off events. [2022-11-20 12:37:06,957 INFO L131 PetriNetUnfolder]: For 535/537 co-relation queries the response was YES. [2022-11-20 12:37:06,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2038 conditions, 959 events. 210/959 cut-off events. For 535/537 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 7678 event pairs, 110 based on Foata normal form. 3/765 useless extension candidates. Maximal degree in co-relation 1953. Up to 254 conditions per place. [2022-11-20 12:37:06,975 INFO L137 encePairwiseOnDemand]: 281/299 looper letters, 86 selfloop transitions, 19 changer transitions 1/323 dead transitions. [2022-11-20 12:37:06,975 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 323 transitions, 1394 flow [2022-11-20 12:37:06,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:37:06,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:37:06,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1616 transitions. [2022-11-20 12:37:06,980 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7720974677496416 [2022-11-20 12:37:06,980 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1616 transitions. [2022-11-20 12:37:06,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1616 transitions. [2022-11-20 12:37:06,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:37:06,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1616 transitions. [2022-11-20 12:37:06,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 230.85714285714286) internal successors, (1616), 7 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states 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 12:37:06,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states 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 12:37:06,992 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states 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 12:37:06,993 INFO L175 Difference]: Start difference. First operand has 307 places, 295 transitions, 1084 flow. Second operand 7 states and 1616 transitions. [2022-11-20 12:37:06,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 323 transitions, 1394 flow [2022-11-20 12:37:07,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 323 transitions, 1383 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:37:07,006 INFO L231 Difference]: Finished difference. Result has 315 places, 306 transitions, 1207 flow [2022-11-20 12:37:07,007 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=1071, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1207, PETRI_PLACES=315, PETRI_TRANSITIONS=306} [2022-11-20 12:37:07,007 INFO L288 CegarLoopForPetriNet]: 253 programPoint places, 62 predicate places. [2022-11-20 12:37:07,008 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 306 transitions, 1207 flow [2022-11-20 12:37:07,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 220.66666666666666) internal successors, (1324), 6 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states 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 12:37:07,009 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:37:07,009 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] [2022-11-20 12:37:07,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 12:37:07,009 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-11-20 12:37:07,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:37:07,010 INFO L85 PathProgramCache]: Analyzing trace with hash 337832697, now seen corresponding path program 1 times [2022-11-20 12:37:07,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:37:07,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510629511] [2022-11-20 12:37:07,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:37:07,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:37:07,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:37:07,098 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 12:37:07,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:37:07,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510629511] [2022-11-20 12:37:07,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510629511] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:37:07,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:37:07,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:37:07,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700451131] [2022-11-20 12:37:07,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:37:07,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:37:07,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:37:07,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:37:07,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:37:07,104 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 299 [2022-11-20 12:37:07,106 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 306 transitions, 1207 flow. Second operand has 6 states, 6 states have (on average 240.16666666666666) internal successors, (1441), 6 states have internal predecessors, (1441), 0 states have call successors, (0), 0 states 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 12:37:07,107 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:37:07,107 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 299 [2022-11-20 12:37:07,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:37:07,496 INFO L130 PetriNetUnfolder]: 104/861 cut-off events. [2022-11-20 12:37:07,496 INFO L131 PetriNetUnfolder]: For 439/439 co-relation queries the response was YES. [2022-11-20 12:37:07,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1911 conditions, 861 events. 104/861 cut-off events. For 439/439 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 4984 event pairs, 30 based on Foata normal form. 0/854 useless extension candidates. Maximal degree in co-relation 1738. Up to 114 conditions per place. [2022-11-20 12:37:07,517 INFO L137 encePairwiseOnDemand]: 291/299 looper letters, 50 selfloop transitions, 8 changer transitions 0/315 dead transitions. [2022-11-20 12:37:07,517 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 315 transitions, 1359 flow [2022-11-20 12:37:07,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:37:07,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:37:07,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1711 transitions. [2022-11-20 12:37:07,521 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8174868609651218 [2022-11-20 12:37:07,521 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1711 transitions. [2022-11-20 12:37:07,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1711 transitions. [2022-11-20 12:37:07,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:37:07,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1711 transitions. [2022-11-20 12:37:07,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 244.42857142857142) internal successors, (1711), 7 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states 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 12:37:07,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states 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 12:37:07,531 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states 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 12:37:07,532 INFO L175 Difference]: Start difference. First operand has 315 places, 306 transitions, 1207 flow. Second operand 7 states and 1711 transitions. [2022-11-20 12:37:07,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 315 transitions, 1359 flow [2022-11-20 12:37:07,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 315 transitions, 1352 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:37:07,545 INFO L231 Difference]: Finished difference. Result has 320 places, 307 transitions, 1230 flow [2022-11-20 12:37:07,546 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=1198, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1230, PETRI_PLACES=320, PETRI_TRANSITIONS=307} [2022-11-20 12:37:07,546 INFO L288 CegarLoopForPetriNet]: 253 programPoint places, 67 predicate places. [2022-11-20 12:37:07,547 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 307 transitions, 1230 flow [2022-11-20 12:37:07,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 240.16666666666666) internal successors, (1441), 6 states have internal predecessors, (1441), 0 states have call successors, (0), 0 states 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 12:37:07,548 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:37:07,548 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] [2022-11-20 12:37:07,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 12:37:07,548 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-11-20 12:37:07,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:37:07,550 INFO L85 PathProgramCache]: Analyzing trace with hash -474878811, now seen corresponding path program 1 times [2022-11-20 12:37:07,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:37:07,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733490823] [2022-11-20 12:37:07,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:37:07,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:37:07,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:37:07,651 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 12:37:07,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:37:07,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733490823] [2022-11-20 12:37:07,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733490823] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:37:07,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:37:07,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:37:07,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922911871] [2022-11-20 12:37:07,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:37:07,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:37:07,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:37:07,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:37:07,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:37:07,656 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 299 [2022-11-20 12:37:07,658 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 307 transitions, 1230 flow. Second operand has 6 states, 6 states have (on average 240.33333333333334) internal successors, (1442), 6 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states 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 12:37:07,658 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:37:07,659 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 299 [2022-11-20 12:37:07,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:37:08,239 INFO L130 PetriNetUnfolder]: 163/1802 cut-off events. [2022-11-20 12:37:08,239 INFO L131 PetriNetUnfolder]: For 1021/1021 co-relation queries the response was YES. [2022-11-20 12:37:08,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3740 conditions, 1802 events. 163/1802 cut-off events. For 1021/1021 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 13678 event pairs, 46 based on Foata normal form. 0/1714 useless extension candidates. Maximal degree in co-relation 3281. Up to 151 conditions per place. [2022-11-20 12:37:08,269 INFO L137 encePairwiseOnDemand]: 291/299 looper letters, 50 selfloop transitions, 8 changer transitions 0/316 dead transitions. [2022-11-20 12:37:08,269 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 316 transitions, 1379 flow [2022-11-20 12:37:08,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:37:08,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:37:08,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1711 transitions. [2022-11-20 12:37:08,277 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8174868609651218 [2022-11-20 12:37:08,277 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1711 transitions. [2022-11-20 12:37:08,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1711 transitions. [2022-11-20 12:37:08,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:37:08,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1711 transitions. [2022-11-20 12:37:08,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 244.42857142857142) internal successors, (1711), 7 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states 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 12:37:08,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states 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 12:37:08,287 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states 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 12:37:08,287 INFO L175 Difference]: Start difference. First operand has 320 places, 307 transitions, 1230 flow. Second operand 7 states and 1711 transitions. [2022-11-20 12:37:08,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 316 transitions, 1379 flow [2022-11-20 12:37:08,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 316 transitions, 1373 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:37:08,304 INFO L231 Difference]: Finished difference. Result has 323 places, 308 transitions, 1254 flow [2022-11-20 12:37:08,305 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=1222, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1254, PETRI_PLACES=323, PETRI_TRANSITIONS=308} [2022-11-20 12:37:08,306 INFO L288 CegarLoopForPetriNet]: 253 programPoint places, 70 predicate places. [2022-11-20 12:37:08,306 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 308 transitions, 1254 flow [2022-11-20 12:37:08,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 240.33333333333334) internal successors, (1442), 6 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states 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 12:37:08,307 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:37:08,308 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:37:08,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 12:37:08,308 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-11-20 12:37:08,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:37:08,309 INFO L85 PathProgramCache]: Analyzing trace with hash 242984067, now seen corresponding path program 1 times [2022-11-20 12:37:08,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:37:08,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96604365] [2022-11-20 12:37:08,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:37:08,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:37:08,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:37:08,396 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 12:37:08,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:37:08,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96604365] [2022-11-20 12:37:08,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96604365] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:37:08,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:37:08,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:37:08,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405398972] [2022-11-20 12:37:08,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:37:08,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:37:08,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:37:08,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:37:08,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:37:08,402 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 299 [2022-11-20 12:37:08,404 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 308 transitions, 1254 flow. Second operand has 6 states, 6 states have (on average 240.5) internal successors, (1443), 6 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states 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 12:37:08,405 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:37:08,405 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 299 [2022-11-20 12:37:08,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:37:08,736 INFO L130 PetriNetUnfolder]: 102/866 cut-off events. [2022-11-20 12:37:08,736 INFO L131 PetriNetUnfolder]: For 492/492 co-relation queries the response was YES. [2022-11-20 12:37:08,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1941 conditions, 866 events. 102/866 cut-off events. For 492/492 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 5051 event pairs, 42 based on Foata normal form. 0/863 useless extension candidates. Maximal degree in co-relation 1743. Up to 111 conditions per place. [2022-11-20 12:37:08,757 INFO L137 encePairwiseOnDemand]: 293/299 looper letters, 47 selfloop transitions, 6 changer transitions 0/311 dead transitions. [2022-11-20 12:37:08,757 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 311 transitions, 1370 flow [2022-11-20 12:37:08,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:37:08,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:37:08,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1466 transitions. [2022-11-20 12:37:08,760 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8171683389074693 [2022-11-20 12:37:08,760 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1466 transitions. [2022-11-20 12:37:08,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1466 transitions. [2022-11-20 12:37:08,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:37:08,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1466 transitions. [2022-11-20 12:37:08,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 244.33333333333334) internal successors, (1466), 6 states have internal predecessors, (1466), 0 states have call successors, (0), 0 states 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 12:37:08,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 299.0) internal successors, (2093), 7 states have internal predecessors, (2093), 0 states have call successors, (0), 0 states 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 12:37:08,767 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 299.0) internal successors, (2093), 7 states have internal predecessors, (2093), 0 states have call successors, (0), 0 states 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 12:37:08,768 INFO L175 Difference]: Start difference. First operand has 323 places, 308 transitions, 1254 flow. Second operand 6 states and 1466 transitions. [2022-11-20 12:37:08,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 311 transitions, 1370 flow [2022-11-20 12:37:08,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 311 transitions, 1364 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:37:08,785 INFO L231 Difference]: Finished difference. Result has 324 places, 307 transitions, 1258 flow [2022-11-20 12:37:08,786 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=1246, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1258, PETRI_PLACES=324, PETRI_TRANSITIONS=307} [2022-11-20 12:37:08,786 INFO L288 CegarLoopForPetriNet]: 253 programPoint places, 71 predicate places. [2022-11-20 12:37:08,787 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 307 transitions, 1258 flow [2022-11-20 12:37:08,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 240.5) internal successors, (1443), 6 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states 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 12:37:08,787 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:37:08,788 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] [2022-11-20 12:37:08,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-20 12:37:08,788 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-11-20 12:37:08,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:37:08,789 INFO L85 PathProgramCache]: Analyzing trace with hash 902370920, now seen corresponding path program 1 times [2022-11-20 12:37:08,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:37:08,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036596302] [2022-11-20 12:37:08,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:37:08,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:37:08,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:37:08,925 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 12:37:08,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:37:08,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036596302] [2022-11-20 12:37:08,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036596302] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:37:08,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:37:08,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:37:08,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609629420] [2022-11-20 12:37:08,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:37:08,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:37:08,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:37:08,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:37:08,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:37:08,930 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 299 [2022-11-20 12:37:08,932 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 307 transitions, 1258 flow. Second operand has 8 states, 8 states have (on average 230.5) internal successors, (1844), 8 states have internal predecessors, (1844), 0 states have call successors, (0), 0 states 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 12:37:08,932 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:37:08,932 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 299 [2022-11-20 12:37:08,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:37:09,430 INFO L130 PetriNetUnfolder]: 138/896 cut-off events. [2022-11-20 12:37:09,430 INFO L131 PetriNetUnfolder]: For 521/521 co-relation queries the response was YES. [2022-11-20 12:37:09,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2090 conditions, 896 events. 138/896 cut-off events. For 521/521 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5337 event pairs, 34 based on Foata normal form. 6/898 useless extension candidates. Maximal degree in co-relation 1894. Up to 91 conditions per place. [2022-11-20 12:37:09,448 INFO L137 encePairwiseOnDemand]: 285/299 looper letters, 60 selfloop transitions, 19 changer transitions 0/319 dead transitions. [2022-11-20 12:37:09,448 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 319 transitions, 1443 flow [2022-11-20 12:37:09,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:37:09,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 12:37:09,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2565 transitions. [2022-11-20 12:37:09,453 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7798723016114321 [2022-11-20 12:37:09,453 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2565 transitions. [2022-11-20 12:37:09,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2565 transitions. [2022-11-20 12:37:09,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:37:09,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2565 transitions. [2022-11-20 12:37:09,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 233.1818181818182) internal successors, (2565), 11 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states 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 12:37:09,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 299.0) internal successors, (3588), 12 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states 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 12:37:09,466 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 299.0) internal successors, (3588), 12 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states 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 12:37:09,467 INFO L175 Difference]: Start difference. First operand has 324 places, 307 transitions, 1258 flow. Second operand 11 states and 2565 transitions. [2022-11-20 12:37:09,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 319 transitions, 1443 flow [2022-11-20 12:37:09,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 319 transitions, 1425 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:37:09,479 INFO L231 Difference]: Finished difference. Result has 328 places, 305 transitions, 1263 flow [2022-11-20 12:37:09,480 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=1225, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1263, PETRI_PLACES=328, PETRI_TRANSITIONS=305} [2022-11-20 12:37:09,480 INFO L288 CegarLoopForPetriNet]: 253 programPoint places, 75 predicate places. [2022-11-20 12:37:09,480 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 305 transitions, 1263 flow [2022-11-20 12:37:09,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 230.5) internal successors, (1844), 8 states have internal predecessors, (1844), 0 states have call successors, (0), 0 states 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 12:37:09,481 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:37:09,482 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] [2022-11-20 12:37:09,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-20 12:37:09,482 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-11-20 12:37:09,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:37:09,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1600876657, now seen corresponding path program 1 times [2022-11-20 12:37:09,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:37:09,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044621476] [2022-11-20 12:37:09,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:37:09,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:37:09,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:37:09,587 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 12:37:09,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:37:09,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044621476] [2022-11-20 12:37:09,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044621476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:37:09,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:37:09,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:37:09,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848545329] [2022-11-20 12:37:09,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:37:09,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:37:09,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:37:09,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:37:09,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:37:09,593 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 299 [2022-11-20 12:37:09,594 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 305 transitions, 1263 flow. Second operand has 6 states, 6 states have (on average 240.66666666666666) internal successors, (1444), 6 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states 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 12:37:09,594 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:37:09,595 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 299 [2022-11-20 12:37:09,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:37:10,106 INFO L130 PetriNetUnfolder]: 160/1780 cut-off events. [2022-11-20 12:37:10,107 INFO L131 PetriNetUnfolder]: For 1175/1175 co-relation queries the response was YES. [2022-11-20 12:37:10,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3770 conditions, 1780 events. 160/1780 cut-off events. For 1175/1175 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 13494 event pairs, 64 based on Foata normal form. 0/1701 useless extension candidates. Maximal degree in co-relation 3303. Up to 157 conditions per place. [2022-11-20 12:37:10,141 INFO L137 encePairwiseOnDemand]: 293/299 looper letters, 47 selfloop transitions, 6 changer transitions 0/308 dead transitions. [2022-11-20 12:37:10,141 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 308 transitions, 1377 flow [2022-11-20 12:37:10,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:37:10,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:37:10,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1466 transitions. [2022-11-20 12:37:10,194 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8171683389074693 [2022-11-20 12:37:10,194 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1466 transitions. [2022-11-20 12:37:10,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1466 transitions. [2022-11-20 12:37:10,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:37:10,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1466 transitions. [2022-11-20 12:37:10,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 244.33333333333334) internal successors, (1466), 6 states have internal predecessors, (1466), 0 states have call successors, (0), 0 states 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 12:37:10,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 299.0) internal successors, (2093), 7 states have internal predecessors, (2093), 0 states have call successors, (0), 0 states 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 12:37:10,200 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 299.0) internal successors, (2093), 7 states have internal predecessors, (2093), 0 states have call successors, (0), 0 states 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 12:37:10,200 INFO L175 Difference]: Start difference. First operand has 328 places, 305 transitions, 1263 flow. Second operand 6 states and 1466 transitions. [2022-11-20 12:37:10,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 308 transitions, 1377 flow [2022-11-20 12:37:10,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 308 transitions, 1342 flow, removed 1 selfloop flow, removed 8 redundant places. [2022-11-20 12:37:10,217 INFO L231 Difference]: Finished difference. Result has 324 places, 304 transitions, 1238 flow [2022-11-20 12:37:10,218 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=1226, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1238, PETRI_PLACES=324, PETRI_TRANSITIONS=304} [2022-11-20 12:37:10,218 INFO L288 CegarLoopForPetriNet]: 253 programPoint places, 71 predicate places. [2022-11-20 12:37:10,219 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 304 transitions, 1238 flow [2022-11-20 12:37:10,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 240.66666666666666) internal successors, (1444), 6 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states 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 12:37:10,219 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:37:10,220 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] [2022-11-20 12:37:10,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-20 12:37:10,220 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-11-20 12:37:10,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:37:10,220 INFO L85 PathProgramCache]: Analyzing trace with hash -2091271753, now seen corresponding path program 1 times [2022-11-20 12:37:10,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:37:10,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014223383] [2022-11-20 12:37:10,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:37:10,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:37:10,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:37:10,365 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 12:37:10,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:37:10,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014223383] [2022-11-20 12:37:10,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014223383] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:37:10,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:37:10,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:37:10,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706262841] [2022-11-20 12:37:10,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:37:10,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:37:10,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:37:10,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:37:10,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:37:10,370 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 299 [2022-11-20 12:37:10,372 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 304 transitions, 1238 flow. Second operand has 8 states, 8 states have (on average 230.625) internal successors, (1845), 8 states have internal predecessors, (1845), 0 states have call successors, (0), 0 states 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 12:37:10,372 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:37:10,372 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 299 [2022-11-20 12:37:10,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:37:10,878 INFO L130 PetriNetUnfolder]: 124/878 cut-off events. [2022-11-20 12:37:10,878 INFO L131 PetriNetUnfolder]: For 457/457 co-relation queries the response was YES. [2022-11-20 12:37:10,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2014 conditions, 878 events. 124/878 cut-off events. For 457/457 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 5100 event pairs, 34 based on Foata normal form. 3/878 useless extension candidates. Maximal degree in co-relation 1818. Up to 91 conditions per place. [2022-11-20 12:37:10,901 INFO L137 encePairwiseOnDemand]: 285/299 looper letters, 58 selfloop transitions, 17 changer transitions 0/318 dead transitions. [2022-11-20 12:37:10,902 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 318 transitions, 1431 flow [2022-11-20 12:37:10,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:37:10,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 12:37:10,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2566 transitions. [2022-11-20 12:37:10,906 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7801763453937367 [2022-11-20 12:37:10,907 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2566 transitions. [2022-11-20 12:37:10,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2566 transitions. [2022-11-20 12:37:10,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:37:10,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2566 transitions. [2022-11-20 12:37:10,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 233.27272727272728) internal successors, (2566), 11 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states 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 12:37:10,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 299.0) internal successors, (3588), 12 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states 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 12:37:10,919 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 299.0) internal successors, (3588), 12 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states 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 12:37:10,920 INFO L175 Difference]: Start difference. First operand has 324 places, 304 transitions, 1238 flow. Second operand 11 states and 2566 transitions. [2022-11-20 12:37:10,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 318 transitions, 1431 flow [2022-11-20 12:37:10,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 318 transitions, 1413 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:37:10,934 INFO L231 Difference]: Finished difference. Result has 328 places, 303 transitions, 1250 flow [2022-11-20 12:37:10,935 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=1216, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1250, PETRI_PLACES=328, PETRI_TRANSITIONS=303} [2022-11-20 12:37:10,936 INFO L288 CegarLoopForPetriNet]: 253 programPoint places, 75 predicate places. [2022-11-20 12:37:10,936 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 303 transitions, 1250 flow [2022-11-20 12:37:10,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 230.625) internal successors, (1845), 8 states have internal predecessors, (1845), 0 states have call successors, (0), 0 states 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 12:37:10,937 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:37:10,937 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] [2022-11-20 12:37:10,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-20 12:37:10,938 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-11-20 12:37:10,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:37:10,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1588561684, now seen corresponding path program 1 times [2022-11-20 12:37:10,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:37:10,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195313192] [2022-11-20 12:37:10,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:37:10,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:37:10,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:37:11,105 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 12:37:11,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:37:11,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195313192] [2022-11-20 12:37:11,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195313192] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:37:11,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:37:11,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:37:11,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24766449] [2022-11-20 12:37:11,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:37:11,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:37:11,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:37:11,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:37:11,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:37:11,110 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 299 [2022-11-20 12:37:11,112 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 303 transitions, 1250 flow. Second operand has 8 states, 8 states have (on average 230.625) internal successors, (1845), 8 states have internal predecessors, (1845), 0 states have call successors, (0), 0 states 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 12:37:11,112 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:37:11,112 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 299 [2022-11-20 12:37:11,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:37:11,732 INFO L130 PetriNetUnfolder]: 211/1647 cut-off events. [2022-11-20 12:37:11,732 INFO L131 PetriNetUnfolder]: For 1096/1096 co-relation queries the response was YES. [2022-11-20 12:37:11,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3552 conditions, 1647 events. 211/1647 cut-off events. For 1096/1096 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 12347 event pairs, 52 based on Foata normal form. 8/1548 useless extension candidates. Maximal degree in co-relation 3090. Up to 129 conditions per place. [2022-11-20 12:37:11,763 INFO L137 encePairwiseOnDemand]: 285/299 looper letters, 60 selfloop transitions, 19 changer transitions 0/315 dead transitions. [2022-11-20 12:37:11,763 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 315 transitions, 1428 flow [2022-11-20 12:37:11,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:37:11,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 12:37:11,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2565 transitions. [2022-11-20 12:37:11,768 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7798723016114321 [2022-11-20 12:37:11,768 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2565 transitions. [2022-11-20 12:37:11,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2565 transitions. [2022-11-20 12:37:11,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:37:11,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2565 transitions. [2022-11-20 12:37:11,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 233.1818181818182) internal successors, (2565), 11 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states 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 12:37:11,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 299.0) internal successors, (3588), 12 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states 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 12:37:11,782 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 299.0) internal successors, (3588), 12 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states 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 12:37:11,782 INFO L175 Difference]: Start difference. First operand has 328 places, 303 transitions, 1250 flow. Second operand 11 states and 2565 transitions. [2022-11-20 12:37:11,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 315 transitions, 1428 flow [2022-11-20 12:37:11,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 315 transitions, 1384 flow, removed 1 selfloop flow, removed 10 redundant places. [2022-11-20 12:37:11,798 INFO L231 Difference]: Finished difference. Result has 327 places, 301 transitions, 1229 flow [2022-11-20 12:37:11,798 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=1191, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1229, PETRI_PLACES=327, PETRI_TRANSITIONS=301} [2022-11-20 12:37:11,799 INFO L288 CegarLoopForPetriNet]: 253 programPoint places, 74 predicate places. [2022-11-20 12:37:11,799 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 301 transitions, 1229 flow [2022-11-20 12:37:11,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 230.625) internal successors, (1845), 8 states have internal predecessors, (1845), 0 states have call successors, (0), 0 states 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 12:37:11,800 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:37:11,800 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] [2022-11-20 12:37:11,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-20 12:37:11,801 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-11-20 12:37:11,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:37:11,801 INFO L85 PathProgramCache]: Analyzing trace with hash 2000772850, now seen corresponding path program 1 times [2022-11-20 12:37:11,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:37:11,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49569485] [2022-11-20 12:37:11,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:37:11,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:37:11,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:37:11,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:37:11,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:37:11,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49569485] [2022-11-20 12:37:11,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49569485] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:37:11,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:37:11,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:37:11,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657851256] [2022-11-20 12:37:11,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:37:11,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:37:11,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:37:11,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:37:11,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:37:11,972 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 299 [2022-11-20 12:37:11,974 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 301 transitions, 1229 flow. Second operand has 8 states, 8 states have (on average 230.75) internal successors, (1846), 8 states have internal predecessors, (1846), 0 states have call successors, (0), 0 states 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 12:37:11,974 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:37:11,974 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 299 [2022-11-20 12:37:11,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:37:12,603 INFO L130 PetriNetUnfolder]: 190/1622 cut-off events. [2022-11-20 12:37:12,604 INFO L131 PetriNetUnfolder]: For 1036/1036 co-relation queries the response was YES. [2022-11-20 12:37:12,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3464 conditions, 1622 events. 190/1622 cut-off events. For 1036/1036 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 11947 event pairs, 52 based on Foata normal form. 4/1533 useless extension candidates. Maximal degree in co-relation 3021. Up to 129 conditions per place. [2022-11-20 12:37:12,632 INFO L137 encePairwiseOnDemand]: 285/299 looper letters, 0 selfloop transitions, 0 changer transitions 315/315 dead transitions. [2022-11-20 12:37:12,632 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 315 transitions, 1415 flow [2022-11-20 12:37:12,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:37:12,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 12:37:12,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2566 transitions. [2022-11-20 12:37:12,637 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7801763453937367 [2022-11-20 12:37:12,637 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2566 transitions. [2022-11-20 12:37:12,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2566 transitions. [2022-11-20 12:37:12,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:37:12,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2566 transitions. [2022-11-20 12:37:12,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 233.27272727272728) internal successors, (2566), 11 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states 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 12:37:12,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 299.0) internal successors, (3588), 12 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states 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 12:37:12,649 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 299.0) internal successors, (3588), 12 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states 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 12:37:12,649 INFO L175 Difference]: Start difference. First operand has 327 places, 301 transitions, 1229 flow. Second operand 11 states and 2566 transitions. [2022-11-20 12:37:12,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 315 transitions, 1415 flow [2022-11-20 12:37:12,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 315 transitions, 1373 flow, removed 1 selfloop flow, removed 9 redundant places. [2022-11-20 12:37:12,665 INFO L231 Difference]: Finished difference. Result has 327 places, 0 transitions, 0 flow [2022-11-20 12:37:12,665 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=1183, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=327, PETRI_TRANSITIONS=0} [2022-11-20 12:37:12,666 INFO L288 CegarLoopForPetriNet]: 253 programPoint places, 74 predicate places. [2022-11-20 12:37:12,666 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 0 transitions, 0 flow [2022-11-20 12:37:12,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 230.75) internal successors, (1846), 8 states have internal predecessors, (1846), 0 states have call successors, (0), 0 states 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 12:37:12,669 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (49 of 50 remaining) [2022-11-20 12:37:12,670 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (48 of 50 remaining) [2022-11-20 12:37:12,670 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (47 of 50 remaining) [2022-11-20 12:37:12,671 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (46 of 50 remaining) [2022-11-20 12:37:12,671 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (45 of 50 remaining) [2022-11-20 12:37:12,671 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (44 of 50 remaining) [2022-11-20 12:37:12,671 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 50 remaining) [2022-11-20 12:37:12,671 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 50 remaining) [2022-11-20 12:37:12,671 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 50 remaining) [2022-11-20 12:37:12,672 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 50 remaining) [2022-11-20 12:37:12,672 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 50 remaining) [2022-11-20 12:37:12,672 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 50 remaining) [2022-11-20 12:37:12,672 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 50 remaining) [2022-11-20 12:37:12,672 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 50 remaining) [2022-11-20 12:37:12,673 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 50 remaining) [2022-11-20 12:37:12,673 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 50 remaining) [2022-11-20 12:37:12,673 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 50 remaining) [2022-11-20 12:37:12,673 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 50 remaining) [2022-11-20 12:37:12,673 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 50 remaining) [2022-11-20 12:37:12,674 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 50 remaining) [2022-11-20 12:37:12,674 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 50 remaining) [2022-11-20 12:37:12,674 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 50 remaining) [2022-11-20 12:37:12,674 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 50 remaining) [2022-11-20 12:37:12,674 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 50 remaining) [2022-11-20 12:37:12,675 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 50 remaining) [2022-11-20 12:37:12,675 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 50 remaining) [2022-11-20 12:37:12,675 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 50 remaining) [2022-11-20 12:37:12,675 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 50 remaining) [2022-11-20 12:37:12,675 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 50 remaining) [2022-11-20 12:37:12,676 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 50 remaining) [2022-11-20 12:37:12,676 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 50 remaining) [2022-11-20 12:37:12,676 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 50 remaining) [2022-11-20 12:37:12,676 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 50 remaining) [2022-11-20 12:37:12,676 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 50 remaining) [2022-11-20 12:37:12,677 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 50 remaining) [2022-11-20 12:37:12,677 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 50 remaining) [2022-11-20 12:37:12,677 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 50 remaining) [2022-11-20 12:37:12,677 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 50 remaining) [2022-11-20 12:37:12,677 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 50 remaining) [2022-11-20 12:37:12,677 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 50 remaining) [2022-11-20 12:37:12,678 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 50 remaining) [2022-11-20 12:37:12,678 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 50 remaining) [2022-11-20 12:37:12,678 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 50 remaining) [2022-11-20 12:37:12,678 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 50 remaining) [2022-11-20 12:37:12,678 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 50 remaining) [2022-11-20 12:37:12,679 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 50 remaining) [2022-11-20 12:37:12,679 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 50 remaining) [2022-11-20 12:37:12,679 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 50 remaining) [2022-11-20 12:37:12,679 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 50 remaining) [2022-11-20 12:37:12,679 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 50 remaining) [2022-11-20 12:37:12,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-20 12:37:12,680 INFO L444 BasicCegarLoop]: Path program 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] [2022-11-20 12:37:12,686 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 12:37:12,687 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 12:37:12,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 12:37:12 BasicIcfg [2022-11-20 12:37:12,692 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 12:37:12,693 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 12:37:12,693 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 12:37:12,693 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 12:37:12,694 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:36:54" (3/4) ... [2022-11-20 12:37:12,697 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 12:37:12,704 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-20 12:37:12,704 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-20 12:37:12,709 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-11-20 12:37:12,709 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-20 12:37:12,709 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 12:37:12,709 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 12:37:12,745 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8cce1-675a-432c-81f8-e9bc54de4544/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 12:37:12,746 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 12:37:12,746 INFO L158 Benchmark]: Toolchain (without parser) took 19313.23ms. Allocated memory was 192.9MB in the beginning and 346.0MB in the end (delta: 153.1MB). Free memory was 159.1MB in the beginning and 166.0MB in the end (delta: -6.9MB). Peak memory consumption was 149.3MB. Max. memory is 16.1GB. [2022-11-20 12:37:12,747 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 140.5MB. Free memory is still 82.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:37:12,747 INFO L158 Benchmark]: CACSL2BoogieTranslator took 272.59ms. Allocated memory is still 192.9MB. Free memory was 159.1MB in the beginning and 148.0MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 12:37:12,747 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.61ms. Allocated memory is still 192.9MB. Free memory was 148.0MB in the beginning and 145.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:37:12,748 INFO L158 Benchmark]: Boogie Preprocessor took 32.18ms. Allocated memory is still 192.9MB. Free memory was 145.9MB in the beginning and 144.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:37:12,748 INFO L158 Benchmark]: RCFGBuilder took 784.27ms. Allocated memory is still 192.9MB. Free memory was 144.6MB in the beginning and 122.2MB in the end (delta: 22.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-20 12:37:12,748 INFO L158 Benchmark]: TraceAbstraction took 18103.86ms. Allocated memory was 192.9MB in the beginning and 346.0MB in the end (delta: 153.1MB). Free memory was 121.6MB in the beginning and 169.2MB in the end (delta: -47.6MB). Peak memory consumption was 107.4MB. Max. memory is 16.1GB. [2022-11-20 12:37:12,749 INFO L158 Benchmark]: Witness Printer took 52.78ms. Allocated memory is still 346.0MB. Free memory was 169.2MB in the beginning and 166.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 12:37:12,750 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 140.5MB. Free memory is still 82.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 272.59ms. Allocated memory is still 192.9MB. Free memory was 159.1MB in the beginning and 148.0MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.61ms. Allocated memory is still 192.9MB. Free memory was 148.0MB in the beginning and 145.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.18ms. Allocated memory is still 192.9MB. Free memory was 145.9MB in the beginning and 144.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 784.27ms. Allocated memory is still 192.9MB. Free memory was 144.6MB in the beginning and 122.2MB in the end (delta: 22.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 18103.86ms. Allocated memory was 192.9MB in the beginning and 346.0MB in the end (delta: 153.1MB). Free memory was 121.6MB in the beginning and 169.2MB in the end (delta: -47.6MB). Peak memory consumption was 107.4MB. Max. memory is 16.1GB. * Witness Printer took 52.78ms. Allocated memory is still 346.0MB. Free memory was 169.2MB in the beginning and 166.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 475 locations, 50 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 17.8s, OverallIterations: 26, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 13.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2177 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2177 mSDsluCounter, 1911 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1127 mSDsCounter, 193 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3177 IncrementalHoareTripleChecker+Invalid, 3370 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 193 mSolverCounterUnsat, 784 mSDtfsCounter, 3177 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 242 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1263occurred in iteration=22, InterpolantAutomatonStates: 198, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 2006 NumberOfCodeBlocks, 2006 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 1980 ConstructedInterpolants, 0 QuantifiedInterpolants, 5148 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 26 InterpolantComputations, 26 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 24 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-20 12:37:12,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8cce1-675a-432c-81f8-e9bc54de4544/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE