./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/queue_longer.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9eb621d-dd8b-4b98-a4b0-68b853a89ccf/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9eb621d-dd8b-4b98-a4b0-68b853a89ccf/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9eb621d-dd8b-4b98-a4b0-68b853a89ccf/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9eb621d-dd8b-4b98-a4b0-68b853a89ccf/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/queue_longer.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9eb621d-dd8b-4b98-a4b0-68b853a89ccf/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9eb621d-dd8b-4b98-a4b0-68b853a89ccf/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --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 9f874a9872f93f025fac23ebed37f94a1f3b80bd0133ea4d7e298577c4fec427 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:35:47,727 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:35:47,862 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9eb621d-dd8b-4b98-a4b0-68b853a89ccf/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:35:47,872 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:35:47,873 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:35:47,921 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:35:47,922 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:35:47,923 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:35:47,924 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:35:47,928 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:35:47,930 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:35:47,930 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:35:47,931 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:35:47,933 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:35:47,933 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:35:47,933 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:35:47,934 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:35:47,934 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:35:47,935 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:35:47,935 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:35:47,935 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:35:47,936 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:35:47,936 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:35:47,937 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:35:47,937 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:35:47,937 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:35:47,938 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:35:47,939 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:35:47,939 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:35:47,940 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:35:47,941 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:35:47,941 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:35:47,941 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:35:47,942 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:35:47,942 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:35:47,942 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:35:47,942 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:35:47,943 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:35:47,943 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:35:47,943 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:35:47,943 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:35:47,944 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9eb621d-dd8b-4b98-a4b0-68b853a89ccf/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9eb621d-dd8b-4b98-a4b0-68b853a89ccf/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f874a9872f93f025fac23ebed37f94a1f3b80bd0133ea4d7e298577c4fec427 [2023-11-19 07:35:48,240 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:35:48,273 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:35:48,276 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:35:48,277 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:35:48,278 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:35:48,279 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9eb621d-dd8b-4b98-a4b0-68b853a89ccf/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread/queue_longer.i [2023-11-19 07:35:51,412 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:35:51,805 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:35:51,808 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9eb621d-dd8b-4b98-a4b0-68b853a89ccf/sv-benchmarks/c/pthread/queue_longer.i [2023-11-19 07:35:51,836 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9eb621d-dd8b-4b98-a4b0-68b853a89ccf/bin/uautomizer-verify-uCwYo4JHxu/data/cbf006385/e8aa2830c68b45a68b1e665653deabe2/FLAG017323f32 [2023-11-19 07:35:51,859 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9eb621d-dd8b-4b98-a4b0-68b853a89ccf/bin/uautomizer-verify-uCwYo4JHxu/data/cbf006385/e8aa2830c68b45a68b1e665653deabe2 [2023-11-19 07:35:51,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:35:51,867 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:35:51,870 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:35:51,871 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:35:51,876 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:35:51,877 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:35:51" (1/1) ... [2023-11-19 07:35:51,878 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e614768 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:51, skipping insertion in model container [2023-11-19 07:35:51,879 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:35:51" (1/1) ... [2023-11-19 07:35:51,971 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:35:52,644 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:35:52,660 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:35:52,716 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:35:52,801 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:35:52,802 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:52 WrapperNode [2023-11-19 07:35:52,802 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:35:52,803 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:35:52,803 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:35:52,804 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:35:52,812 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:52" (1/1) ... [2023-11-19 07:35:52,848 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:52" (1/1) ... [2023-11-19 07:35:52,920 INFO L138 Inliner]: procedures = 274, calls = 63, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 269 [2023-11-19 07:35:52,920 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:35:52,921 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:35:52,921 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:35:52,921 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:35:52,934 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:52" (1/1) ... [2023-11-19 07:35:52,934 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:52" (1/1) ... [2023-11-19 07:35:52,956 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:52" (1/1) ... [2023-11-19 07:35:52,956 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:52" (1/1) ... [2023-11-19 07:35:53,001 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:52" (1/1) ... [2023-11-19 07:35:53,006 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:52" (1/1) ... [2023-11-19 07:35:53,021 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:52" (1/1) ... [2023-11-19 07:35:53,023 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:52" (1/1) ... [2023-11-19 07:35:53,028 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:35:53,029 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:35:53,030 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:35:53,030 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:35:53,031 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:52" (1/1) ... [2023-11-19 07:35:53,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:35:53,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9eb621d-dd8b-4b98-a4b0-68b853a89ccf/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:35:53,116 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9eb621d-dd8b-4b98-a4b0-68b853a89ccf/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:35:53,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9eb621d-dd8b-4b98-a4b0-68b853a89ccf/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:35:53,158 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-19 07:35:53,158 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-19 07:35:53,158 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-19 07:35:53,158 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-19 07:35:53,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:35:53,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:35:53,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:35:53,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:35:53,159 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:35:53,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:35:53,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:35:53,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:35:53,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:35:53,161 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:35:53,322 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:35:53,325 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:35:53,859 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:35:53,879 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:35:53,879 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 07:35:53,885 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:35:53 BoogieIcfgContainer [2023-11-19 07:35:53,885 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:35:53,891 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:35:53,891 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:35:53,895 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:35:53,896 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:35:51" (1/3) ... [2023-11-19 07:35:53,897 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c6ce1f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:35:53, skipping insertion in model container [2023-11-19 07:35:53,897 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:52" (2/3) ... [2023-11-19 07:35:53,899 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c6ce1f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:35:53, skipping insertion in model container [2023-11-19 07:35:53,899 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:35:53" (3/3) ... [2023-11-19 07:35:53,901 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longer.i [2023-11-19 07:35:53,911 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:35:53,922 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:35:53,922 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-11-19 07:35:53,923 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:35:54,097 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:35:54,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 307 places, 318 transitions, 650 flow [2023-11-19 07:35:54,415 INFO L124 PetriNetUnfolderBase]: 18/316 cut-off events. [2023-11-19 07:35:54,416 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:35:54,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 316 events. 18/316 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 520 event pairs, 0 based on Foata normal form. 0/280 useless extension candidates. Maximal degree in co-relation 235. Up to 2 conditions per place. [2023-11-19 07:35:54,428 INFO L82 GeneralOperation]: Start removeDead. Operand has 307 places, 318 transitions, 650 flow [2023-11-19 07:35:54,438 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 295 places, 306 transitions, 621 flow [2023-11-19 07:35:54,442 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:35:54,453 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 295 places, 306 transitions, 621 flow [2023-11-19 07:35:54,457 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 295 places, 306 transitions, 621 flow [2023-11-19 07:35:54,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 295 places, 306 transitions, 621 flow [2023-11-19 07:35:54,555 INFO L124 PetriNetUnfolderBase]: 18/306 cut-off events. [2023-11-19 07:35:54,555 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:35:54,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314 conditions, 306 events. 18/306 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 475 event pairs, 0 based on Foata normal form. 0/270 useless extension candidates. Maximal degree in co-relation 235. Up to 2 conditions per place. [2023-11-19 07:35:54,578 INFO L119 LiptonReduction]: Number of co-enabled transitions 25932 [2023-11-19 07:36:06,137 INFO L134 LiptonReduction]: Checked pairs total: 52722 [2023-11-19 07:36:06,137 INFO L136 LiptonReduction]: Total number of compositions: 302 [2023-11-19 07:36:06,151 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:36:06,157 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=LoopHeads, 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;@695ca314, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:36:06,158 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2023-11-19 07:36:06,165 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:36:06,165 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2023-11-19 07:36:06,165 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:36:06,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:06,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:36:06,167 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 07:36:06,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:06,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1307034356, now seen corresponding path program 1 times [2023-11-19 07:36:06,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:06,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286816958] [2023-11-19 07:36:06,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:06,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:06,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:07,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:07,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:07,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286816958] [2023-11-19 07:36:07,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286816958] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:07,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:07,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:36:07,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839637579] [2023-11-19 07:36:07,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:07,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:36:07,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:07,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:36:07,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:36:07,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 620 [2023-11-19 07:36:07,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 80 transitions, 169 flow. Second operand has 5 states, 5 states have (on average 275.2) internal successors, (1376), 5 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:07,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:07,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 620 [2023-11-19 07:36:07,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:08,688 INFO L124 PetriNetUnfolderBase]: 3137/5160 cut-off events. [2023-11-19 07:36:08,688 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2023-11-19 07:36:08,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10186 conditions, 5160 events. 3137/5160 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 27390 event pairs, 2489 based on Foata normal form. 80/3629 useless extension candidates. Maximal degree in co-relation 9962. Up to 4915 conditions per place. [2023-11-19 07:36:08,802 INFO L140 encePairwiseOnDemand]: 609/620 looper letters, 71 selfloop transitions, 9 changer transitions 0/86 dead transitions. [2023-11-19 07:36:08,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 86 transitions, 341 flow [2023-11-19 07:36:08,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:36:08,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:36:08,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1729 transitions. [2023-11-19 07:36:08,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46478494623655914 [2023-11-19 07:36:08,825 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1729 transitions. [2023-11-19 07:36:08,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1729 transitions. [2023-11-19 07:36:08,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:08,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1729 transitions. [2023-11-19 07:36:08,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 288.1666666666667) internal successors, (1729), 6 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:08,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 620.0) internal successors, (4340), 7 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:08,862 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 620.0) internal successors, (4340), 7 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:08,865 INFO L175 Difference]: Start difference. First operand has 77 places, 80 transitions, 169 flow. Second operand 6 states and 1729 transitions. [2023-11-19 07:36:08,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 86 transitions, 341 flow [2023-11-19 07:36:08,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 86 transitions, 336 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 07:36:08,885 INFO L231 Difference]: Finished difference. Result has 83 places, 85 transitions, 218 flow [2023-11-19 07:36:08,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=218, PETRI_PLACES=83, PETRI_TRANSITIONS=85} [2023-11-19 07:36:08,891 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 6 predicate places. [2023-11-19 07:36:08,891 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 85 transitions, 218 flow [2023-11-19 07:36:08,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 275.2) internal successors, (1376), 5 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:08,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:08,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:08,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:36:08,894 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 07:36:08,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:08,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1862776920, now seen corresponding path program 1 times [2023-11-19 07:36:08,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:08,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805400350] [2023-11-19 07:36:08,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:08,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:08,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:09,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:09,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:09,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805400350] [2023-11-19 07:36:09,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805400350] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:09,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:09,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:36:09,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232854585] [2023-11-19 07:36:09,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:09,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:36:09,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:09,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:36:09,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:36:10,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 620 [2023-11-19 07:36:10,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 85 transitions, 218 flow. Second operand has 6 states, 6 states have (on average 271.1666666666667) internal successors, (1627), 6 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:10,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:10,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 620 [2023-11-19 07:36:10,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:11,310 INFO L124 PetriNetUnfolderBase]: 3363/5525 cut-off events. [2023-11-19 07:36:11,311 INFO L125 PetriNetUnfolderBase]: For 206/206 co-relation queries the response was YES. [2023-11-19 07:36:11,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11346 conditions, 5525 events. 3363/5525 cut-off events. For 206/206 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 29993 event pairs, 734 based on Foata normal form. 0/3852 useless extension candidates. Maximal degree in co-relation 10349. Up to 4959 conditions per place. [2023-11-19 07:36:11,360 INFO L140 encePairwiseOnDemand]: 611/620 looper letters, 128 selfloop transitions, 17 changer transitions 0/151 dead transitions. [2023-11-19 07:36:11,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 151 transitions, 658 flow [2023-11-19 07:36:11,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:36:11,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:36:11,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1763 transitions. [2023-11-19 07:36:11,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4739247311827957 [2023-11-19 07:36:11,370 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1763 transitions. [2023-11-19 07:36:11,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1763 transitions. [2023-11-19 07:36:11,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:11,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1763 transitions. [2023-11-19 07:36:11,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 293.8333333333333) internal successors, (1763), 6 states have internal predecessors, (1763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:11,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 620.0) internal successors, (4340), 7 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:11,394 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 620.0) internal successors, (4340), 7 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:11,394 INFO L175 Difference]: Start difference. First operand has 83 places, 85 transitions, 218 flow. Second operand 6 states and 1763 transitions. [2023-11-19 07:36:11,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 151 transitions, 658 flow [2023-11-19 07:36:11,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 151 transitions, 658 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:36:11,407 INFO L231 Difference]: Finished difference. Result has 91 places, 94 transitions, 312 flow [2023-11-19 07:36:11,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=312, PETRI_PLACES=91, PETRI_TRANSITIONS=94} [2023-11-19 07:36:11,408 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 14 predicate places. [2023-11-19 07:36:11,409 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 94 transitions, 312 flow [2023-11-19 07:36:11,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 271.1666666666667) internal successors, (1627), 6 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:11,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:11,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:11,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:36:11,411 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 07:36:11,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:11,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1862921070, now seen corresponding path program 2 times [2023-11-19 07:36:11,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:11,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873497836] [2023-11-19 07:36:11,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:11,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:11,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:12,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:12,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:12,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873497836] [2023-11-19 07:36:12,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873497836] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:12,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:12,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:36:12,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211889892] [2023-11-19 07:36:12,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:12,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:36:12,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:12,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:36:12,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:36:12,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 620 [2023-11-19 07:36:12,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 94 transitions, 312 flow. Second operand has 6 states, 6 states have (on average 273.1666666666667) internal successors, (1639), 6 states have internal predecessors, (1639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:12,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:12,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 620 [2023-11-19 07:36:12,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:13,964 INFO L124 PetriNetUnfolderBase]: 3413/5628 cut-off events. [2023-11-19 07:36:13,964 INFO L125 PetriNetUnfolderBase]: For 1138/1138 co-relation queries the response was YES. [2023-11-19 07:36:13,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12224 conditions, 5628 events. 3413/5628 cut-off events. For 1138/1138 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 30558 event pairs, 2478 based on Foata normal form. 0/3959 useless extension candidates. Maximal degree in co-relation 10862. Up to 5204 conditions per place. [2023-11-19 07:36:14,037 INFO L140 encePairwiseOnDemand]: 612/620 looper letters, 109 selfloop transitions, 13 changer transitions 0/128 dead transitions. [2023-11-19 07:36:14,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 128 transitions, 643 flow [2023-11-19 07:36:14,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:36:14,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:36:14,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2018 transitions. [2023-11-19 07:36:14,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4649769585253456 [2023-11-19 07:36:14,047 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2018 transitions. [2023-11-19 07:36:14,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2018 transitions. [2023-11-19 07:36:14,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:14,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2018 transitions. [2023-11-19 07:36:14,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 288.2857142857143) internal successors, (2018), 7 states have internal predecessors, (2018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:14,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 620.0) internal successors, (4960), 8 states have internal predecessors, (4960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:14,072 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 620.0) internal successors, (4960), 8 states have internal predecessors, (4960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:14,073 INFO L175 Difference]: Start difference. First operand has 91 places, 94 transitions, 312 flow. Second operand 7 states and 2018 transitions. [2023-11-19 07:36:14,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 128 transitions, 643 flow [2023-11-19 07:36:14,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 128 transitions, 625 flow, removed 9 selfloop flow, removed 0 redundant places. [2023-11-19 07:36:14,146 INFO L231 Difference]: Finished difference. Result has 99 places, 99 transitions, 365 flow [2023-11-19 07:36:14,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=365, PETRI_PLACES=99, PETRI_TRANSITIONS=99} [2023-11-19 07:36:14,148 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 22 predicate places. [2023-11-19 07:36:14,148 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 99 transitions, 365 flow [2023-11-19 07:36:14,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 273.1666666666667) internal successors, (1639), 6 states have internal predecessors, (1639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:14,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:14,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:14,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:36:14,153 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 07:36:14,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:14,154 INFO L85 PathProgramCache]: Analyzing trace with hash -239472979, now seen corresponding path program 1 times [2023-11-19 07:36:14,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:14,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156967326] [2023-11-19 07:36:14,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:14,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:14,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:14,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:14,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:14,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156967326] [2023-11-19 07:36:14,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156967326] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:14,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:14,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:36:14,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004045797] [2023-11-19 07:36:14,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:14,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:14,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:14,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:14,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:14,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 620 [2023-11-19 07:36:14,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 99 transitions, 365 flow. Second operand has 3 states, 3 states have (on average 300.3333333333333) internal successors, (901), 3 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:14,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:14,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 620 [2023-11-19 07:36:14,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:15,947 INFO L124 PetriNetUnfolderBase]: 5518/9314 cut-off events. [2023-11-19 07:36:15,948 INFO L125 PetriNetUnfolderBase]: For 1696/1733 co-relation queries the response was YES. [2023-11-19 07:36:15,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19812 conditions, 9314 events. 5518/9314 cut-off events. For 1696/1733 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 59497 event pairs, 2472 based on Foata normal form. 37/6730 useless extension candidates. Maximal degree in co-relation 18912. Up to 5091 conditions per place. [2023-11-19 07:36:16,020 INFO L140 encePairwiseOnDemand]: 615/620 looper letters, 159 selfloop transitions, 2 changer transitions 0/172 dead transitions. [2023-11-19 07:36:16,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 172 transitions, 912 flow [2023-11-19 07:36:16,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:16,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:36:16,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1027 transitions. [2023-11-19 07:36:16,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5521505376344086 [2023-11-19 07:36:16,025 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1027 transitions. [2023-11-19 07:36:16,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1027 transitions. [2023-11-19 07:36:16,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:16,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1027 transitions. [2023-11-19 07:36:16,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 342.3333333333333) internal successors, (1027), 3 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:16,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:16,038 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:16,038 INFO L175 Difference]: Start difference. First operand has 99 places, 99 transitions, 365 flow. Second operand 3 states and 1027 transitions. [2023-11-19 07:36:16,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 172 transitions, 912 flow [2023-11-19 07:36:16,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 172 transitions, 890 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-11-19 07:36:16,050 INFO L231 Difference]: Finished difference. Result has 99 places, 100 transitions, 365 flow [2023-11-19 07:36:16,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=365, PETRI_PLACES=99, PETRI_TRANSITIONS=100} [2023-11-19 07:36:16,053 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 22 predicate places. [2023-11-19 07:36:16,053 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 100 transitions, 365 flow [2023-11-19 07:36:16,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 300.3333333333333) internal successors, (901), 3 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:16,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:16,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:16,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:36:16,054 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 07:36:16,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:16,055 INFO L85 PathProgramCache]: Analyzing trace with hash 315127159, now seen corresponding path program 1 times [2023-11-19 07:36:16,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:16,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194388117] [2023-11-19 07:36:16,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:16,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:16,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:16,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:16,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:16,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194388117] [2023-11-19 07:36:16,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194388117] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:16,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:16,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:36:16,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940848130] [2023-11-19 07:36:16,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:16,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:36:16,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:16,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:36:16,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:36:16,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 620 [2023-11-19 07:36:16,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 100 transitions, 365 flow. Second operand has 6 states, 6 states have (on average 277.5) internal successors, (1665), 6 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:16,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:16,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 620 [2023-11-19 07:36:16,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:18,302 INFO L124 PetriNetUnfolderBase]: 6048/10070 cut-off events. [2023-11-19 07:36:18,302 INFO L125 PetriNetUnfolderBase]: For 2470/2470 co-relation queries the response was YES. [2023-11-19 07:36:18,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22597 conditions, 10070 events. 6048/10070 cut-off events. For 2470/2470 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 61703 event pairs, 4113 based on Foata normal form. 0/7399 useless extension candidates. Maximal degree in co-relation 21775. Up to 8726 conditions per place. [2023-11-19 07:36:18,392 INFO L140 encePairwiseOnDemand]: 607/620 looper letters, 110 selfloop transitions, 17 changer transitions 0/133 dead transitions. [2023-11-19 07:36:18,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 133 transitions, 709 flow [2023-11-19 07:36:18,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:36:18,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:36:18,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2045 transitions. [2023-11-19 07:36:18,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47119815668202764 [2023-11-19 07:36:18,401 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2045 transitions. [2023-11-19 07:36:18,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2045 transitions. [2023-11-19 07:36:18,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:18,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2045 transitions. [2023-11-19 07:36:18,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 292.14285714285717) internal successors, (2045), 7 states have internal predecessors, (2045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:18,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 620.0) internal successors, (4960), 8 states have internal predecessors, (4960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:18,421 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 620.0) internal successors, (4960), 8 states have internal predecessors, (4960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:18,421 INFO L175 Difference]: Start difference. First operand has 99 places, 100 transitions, 365 flow. Second operand 7 states and 2045 transitions. [2023-11-19 07:36:18,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 133 transitions, 709 flow [2023-11-19 07:36:18,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 133 transitions, 705 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:36:18,429 INFO L231 Difference]: Finished difference. Result has 106 places, 104 transitions, 428 flow [2023-11-19 07:36:18,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=428, PETRI_PLACES=106, PETRI_TRANSITIONS=104} [2023-11-19 07:36:18,431 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 29 predicate places. [2023-11-19 07:36:18,431 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 104 transitions, 428 flow [2023-11-19 07:36:18,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 277.5) internal successors, (1665), 6 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:18,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:18,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:18,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:36:18,433 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 07:36:18,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:18,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1286226848, now seen corresponding path program 1 times [2023-11-19 07:36:18,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:18,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167477784] [2023-11-19 07:36:18,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:18,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:18,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:19,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:19,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:19,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167477784] [2023-11-19 07:36:19,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167477784] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:19,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:19,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:36:19,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284680709] [2023-11-19 07:36:19,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:19,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:36:19,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:19,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:36:19,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:36:19,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 620 [2023-11-19 07:36:19,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 104 transitions, 428 flow. Second operand has 8 states, 8 states have (on average 270.25) internal successors, (2162), 8 states have internal predecessors, (2162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:19,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:19,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 620 [2023-11-19 07:36:19,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:21,792 INFO L124 PetriNetUnfolderBase]: 7098/11721 cut-off events. [2023-11-19 07:36:21,792 INFO L125 PetriNetUnfolderBase]: For 3059/3059 co-relation queries the response was YES. [2023-11-19 07:36:21,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27585 conditions, 11721 events. 7098/11721 cut-off events. For 3059/3059 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 73902 event pairs, 1689 based on Foata normal form. 81/9206 useless extension candidates. Maximal degree in co-relation 25186. Up to 8283 conditions per place. [2023-11-19 07:36:21,909 INFO L140 encePairwiseOnDemand]: 606/620 looper letters, 157 selfloop transitions, 25 changer transitions 0/188 dead transitions. [2023-11-19 07:36:21,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 188 transitions, 1057 flow [2023-11-19 07:36:21,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:36:21,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:36:21,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1775 transitions. [2023-11-19 07:36:21,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4771505376344086 [2023-11-19 07:36:21,918 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1775 transitions. [2023-11-19 07:36:21,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1775 transitions. [2023-11-19 07:36:21,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:21,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1775 transitions. [2023-11-19 07:36:21,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 295.8333333333333) internal successors, (1775), 6 states have internal predecessors, (1775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:21,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 620.0) internal successors, (4340), 7 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:21,939 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 620.0) internal successors, (4340), 7 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:21,939 INFO L175 Difference]: Start difference. First operand has 106 places, 104 transitions, 428 flow. Second operand 6 states and 1775 transitions. [2023-11-19 07:36:21,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 188 transitions, 1057 flow [2023-11-19 07:36:22,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 188 transitions, 1043 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-19 07:36:22,006 INFO L231 Difference]: Finished difference. Result has 111 places, 110 transitions, 541 flow [2023-11-19 07:36:22,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=541, PETRI_PLACES=111, PETRI_TRANSITIONS=110} [2023-11-19 07:36:22,008 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 34 predicate places. [2023-11-19 07:36:22,008 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 110 transitions, 541 flow [2023-11-19 07:36:22,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.25) internal successors, (2162), 8 states have internal predecessors, (2162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:22,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:22,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:22,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:36:22,010 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 07:36:22,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:22,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1205488573, now seen corresponding path program 1 times [2023-11-19 07:36:22,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:22,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895037045] [2023-11-19 07:36:22,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:22,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:22,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:22,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:22,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:22,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895037045] [2023-11-19 07:36:22,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895037045] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:22,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:22,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:36:22,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940686225] [2023-11-19 07:36:22,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:22,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:36:22,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:22,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:36:22,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:36:22,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 620 [2023-11-19 07:36:22,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 110 transitions, 541 flow. Second operand has 7 states, 7 states have (on average 273.42857142857144) internal successors, (1914), 7 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:22,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:22,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 620 [2023-11-19 07:36:22,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:24,517 INFO L124 PetriNetUnfolderBase]: 7409/12324 cut-off events. [2023-11-19 07:36:24,517 INFO L125 PetriNetUnfolderBase]: For 8072/8072 co-relation queries the response was YES. [2023-11-19 07:36:24,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31117 conditions, 12324 events. 7409/12324 cut-off events. For 8072/8072 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 78492 event pairs, 1771 based on Foata normal form. 205/9839 useless extension candidates. Maximal degree in co-relation 30337. Up to 9576 conditions per place. [2023-11-19 07:36:24,627 INFO L140 encePairwiseOnDemand]: 605/620 looper letters, 168 selfloop transitions, 32 changer transitions 0/206 dead transitions. [2023-11-19 07:36:24,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 206 transitions, 1248 flow [2023-11-19 07:36:24,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:36:24,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:36:24,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2078 transitions. [2023-11-19 07:36:24,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4788018433179724 [2023-11-19 07:36:24,635 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2078 transitions. [2023-11-19 07:36:24,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2078 transitions. [2023-11-19 07:36:24,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:24,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2078 transitions. [2023-11-19 07:36:24,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 296.85714285714283) internal successors, (2078), 7 states have internal predecessors, (2078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:24,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 620.0) internal successors, (4960), 8 states have internal predecessors, (4960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:24,654 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 620.0) internal successors, (4960), 8 states have internal predecessors, (4960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:24,655 INFO L175 Difference]: Start difference. First operand has 111 places, 110 transitions, 541 flow. Second operand 7 states and 2078 transitions. [2023-11-19 07:36:24,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 206 transitions, 1248 flow [2023-11-19 07:36:24,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 206 transitions, 1226 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-19 07:36:24,756 INFO L231 Difference]: Finished difference. Result has 117 places, 119 transitions, 682 flow [2023-11-19 07:36:24,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=682, PETRI_PLACES=117, PETRI_TRANSITIONS=119} [2023-11-19 07:36:24,757 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 40 predicate places. [2023-11-19 07:36:24,759 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 119 transitions, 682 flow [2023-11-19 07:36:24,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 273.42857142857144) internal successors, (1914), 7 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:24,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:24,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:24,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:36:24,761 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 07:36:24,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:24,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1175258027, now seen corresponding path program 1 times [2023-11-19 07:36:24,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:24,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312251808] [2023-11-19 07:36:24,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:24,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:24,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:24,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:24,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:24,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312251808] [2023-11-19 07:36:24,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312251808] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:24,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:24,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:36:24,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865533675] [2023-11-19 07:36:24,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:24,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:24,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:24,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:24,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:24,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 297 out of 620 [2023-11-19 07:36:24,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 119 transitions, 682 flow. Second operand has 3 states, 3 states have (on average 300.3333333333333) internal successors, (901), 3 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:24,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:24,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 297 of 620 [2023-11-19 07:36:24,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:25,971 INFO L124 PetriNetUnfolderBase]: 4673/7910 cut-off events. [2023-11-19 07:36:25,971 INFO L125 PetriNetUnfolderBase]: For 5625/5638 co-relation queries the response was YES. [2023-11-19 07:36:26,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19721 conditions, 7910 events. 4673/7910 cut-off events. For 5625/5638 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 46245 event pairs, 2260 based on Foata normal form. 183/6186 useless extension candidates. Maximal degree in co-relation 19538. Up to 5331 conditions per place. [2023-11-19 07:36:26,030 INFO L140 encePairwiseOnDemand]: 616/620 looper letters, 122 selfloop transitions, 3 changer transitions 0/134 dead transitions. [2023-11-19 07:36:26,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 134 transitions, 886 flow [2023-11-19 07:36:26,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:26,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:36:26,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 990 transitions. [2023-11-19 07:36:26,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532258064516129 [2023-11-19 07:36:26,035 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 990 transitions. [2023-11-19 07:36:26,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 990 transitions. [2023-11-19 07:36:26,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:26,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 990 transitions. [2023-11-19 07:36:26,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 330.0) internal successors, (990), 3 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:26,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:26,045 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:26,045 INFO L175 Difference]: Start difference. First operand has 117 places, 119 transitions, 682 flow. Second operand 3 states and 990 transitions. [2023-11-19 07:36:26,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 134 transitions, 886 flow [2023-11-19 07:36:26,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 134 transitions, 786 flow, removed 4 selfloop flow, removed 14 redundant places. [2023-11-19 07:36:26,069 INFO L231 Difference]: Finished difference. Result has 101 places, 95 transitions, 399 flow [2023-11-19 07:36:26,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=399, PETRI_PLACES=101, PETRI_TRANSITIONS=95} [2023-11-19 07:36:26,070 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 24 predicate places. [2023-11-19 07:36:26,070 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 95 transitions, 399 flow [2023-11-19 07:36:26,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 300.3333333333333) internal successors, (901), 3 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:26,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:26,071 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:26,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:36:26,071 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 07:36:26,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:26,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1737444360, now seen corresponding path program 1 times [2023-11-19 07:36:26,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:26,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064506082] [2023-11-19 07:36:26,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:26,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:26,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:26,122 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:26,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:26,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064506082] [2023-11-19 07:36:26,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064506082] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:36:26,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960455497] [2023-11-19 07:36:26,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:26,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:26,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9eb621d-dd8b-4b98-a4b0-68b853a89ccf/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:26,131 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9eb621d-dd8b-4b98-a4b0-68b853a89ccf/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:26,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9eb621d-dd8b-4b98-a4b0-68b853a89ccf/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:36:26,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:26,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:36:26,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:26,348 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:26,354 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:36:26,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960455497] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:26,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:36:26,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-19 07:36:26,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269196060] [2023-11-19 07:36:26,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:26,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:36:26,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:26,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:36:26,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:36:26,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 620 [2023-11-19 07:36:26,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 95 transitions, 399 flow. Second operand has 4 states, 4 states have (on average 300.25) internal successors, (1201), 4 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:26,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:26,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 620 [2023-11-19 07:36:26,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:27,361 INFO L124 PetriNetUnfolderBase]: 4172/7571 cut-off events. [2023-11-19 07:36:27,361 INFO L125 PetriNetUnfolderBase]: For 4126/4130 co-relation queries the response was YES. [2023-11-19 07:36:27,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17508 conditions, 7571 events. 4172/7571 cut-off events. For 4126/4130 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 47366 event pairs, 185 based on Foata normal form. 2/5990 useless extension candidates. Maximal degree in co-relation 16964. Up to 3630 conditions per place. [2023-11-19 07:36:27,411 INFO L140 encePairwiseOnDemand]: 617/620 looper letters, 184 selfloop transitions, 2 changer transitions 0/197 dead transitions. [2023-11-19 07:36:27,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 197 transitions, 1111 flow [2023-11-19 07:36:27,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:36:27,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:36:27,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1346 transitions. [2023-11-19 07:36:27,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.542741935483871 [2023-11-19 07:36:27,417 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1346 transitions. [2023-11-19 07:36:27,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1346 transitions. [2023-11-19 07:36:27,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:27,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1346 transitions. [2023-11-19 07:36:27,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 336.5) internal successors, (1346), 4 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:27,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 620.0) internal successors, (3100), 5 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:27,429 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 620.0) internal successors, (3100), 5 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:27,429 INFO L175 Difference]: Start difference. First operand has 101 places, 95 transitions, 399 flow. Second operand 4 states and 1346 transitions. [2023-11-19 07:36:27,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 197 transitions, 1111 flow [2023-11-19 07:36:27,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 197 transitions, 1107 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:36:27,440 INFO L231 Difference]: Finished difference. Result has 102 places, 94 transitions, 396 flow [2023-11-19 07:36:27,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=396, PETRI_PLACES=102, PETRI_TRANSITIONS=94} [2023-11-19 07:36:27,441 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 25 predicate places. [2023-11-19 07:36:27,441 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 94 transitions, 396 flow [2023-11-19 07:36:27,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 300.25) internal successors, (1201), 4 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:27,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:27,442 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:27,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9eb621d-dd8b-4b98-a4b0-68b853a89ccf/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:36:27,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9eb621d-dd8b-4b98-a4b0-68b853a89ccf/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:27,659 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 07:36:27,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:27,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1737444291, now seen corresponding path program 1 times [2023-11-19 07:36:27,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:27,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112462813] [2023-11-19 07:36:27,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:27,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:27,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:27,714 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:36:27,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:27,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112462813] [2023-11-19 07:36:27,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112462813] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:27,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:27,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:36:27,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895175117] [2023-11-19 07:36:27,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:27,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:27,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:27,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:27,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:27,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 297 out of 620 [2023-11-19 07:36:27,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 94 transitions, 396 flow. Second operand has 3 states, 3 states have (on average 300.0) internal successors, (900), 3 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:27,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:27,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 297 of 620 [2023-11-19 07:36:27,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:28,540 INFO L124 PetriNetUnfolderBase]: 3957/7240 cut-off events. [2023-11-19 07:36:28,540 INFO L125 PetriNetUnfolderBase]: For 4356/4362 co-relation queries the response was YES. [2023-11-19 07:36:28,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16860 conditions, 7240 events. 3957/7240 cut-off events. For 4356/4362 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 44714 event pairs, 547 based on Foata normal form. 4/5841 useless extension candidates. Maximal degree in co-relation 16368. Up to 5255 conditions per place. [2023-11-19 07:36:28,588 INFO L140 encePairwiseOnDemand]: 616/620 looper letters, 121 selfloop transitions, 4 changer transitions 0/136 dead transitions. [2023-11-19 07:36:28,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 136 transitions, 793 flow [2023-11-19 07:36:28,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:28,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:36:28,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 990 transitions. [2023-11-19 07:36:28,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532258064516129 [2023-11-19 07:36:28,593 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 990 transitions. [2023-11-19 07:36:28,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 990 transitions. [2023-11-19 07:36:28,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:28,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 990 transitions. [2023-11-19 07:36:28,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 330.0) internal successors, (990), 3 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:28,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:28,601 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:28,601 INFO L175 Difference]: Start difference. First operand has 102 places, 94 transitions, 396 flow. Second operand 3 states and 990 transitions. [2023-11-19 07:36:28,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 136 transitions, 793 flow [2023-11-19 07:36:28,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 136 transitions, 790 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:36:28,610 INFO L231 Difference]: Finished difference. Result has 102 places, 94 transitions, 405 flow [2023-11-19 07:36:28,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=405, PETRI_PLACES=102, PETRI_TRANSITIONS=94} [2023-11-19 07:36:28,612 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 25 predicate places. [2023-11-19 07:36:28,612 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 94 transitions, 405 flow [2023-11-19 07:36:28,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 300.0) internal successors, (900), 3 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:28,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:28,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:28,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:36:28,613 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 07:36:28,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:28,614 INFO L85 PathProgramCache]: Analyzing trace with hash 738575667, now seen corresponding path program 1 times [2023-11-19 07:36:28,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:28,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114974131] [2023-11-19 07:36:28,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:28,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:28,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:28,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:28,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:28,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114974131] [2023-11-19 07:36:28,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114974131] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:28,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:28,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:36:28,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994225336] [2023-11-19 07:36:28,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:28,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:28,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:28,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:28,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:28,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 620 [2023-11-19 07:36:28,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 94 transitions, 405 flow. Second operand has 3 states, 3 states have (on average 301.3333333333333) internal successors, (904), 3 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:28,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:28,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 620 [2023-11-19 07:36:28,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:29,621 INFO L124 PetriNetUnfolderBase]: 4561/8051 cut-off events. [2023-11-19 07:36:29,622 INFO L125 PetriNetUnfolderBase]: For 6671/6671 co-relation queries the response was YES. [2023-11-19 07:36:29,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20661 conditions, 8051 events. 4561/8051 cut-off events. For 6671/6671 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 50013 event pairs, 1982 based on Foata normal form. 0/6591 useless extension candidates. Maximal degree in co-relation 20137. Up to 6716 conditions per place. [2023-11-19 07:36:29,670 INFO L140 encePairwiseOnDemand]: 613/620 looper letters, 128 selfloop transitions, 2 changer transitions 0/141 dead transitions. [2023-11-19 07:36:29,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 141 transitions, 842 flow [2023-11-19 07:36:29,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:29,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:36:29,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 995 transitions. [2023-11-19 07:36:29,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5349462365591398 [2023-11-19 07:36:29,675 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 995 transitions. [2023-11-19 07:36:29,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 995 transitions. [2023-11-19 07:36:29,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:29,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 995 transitions. [2023-11-19 07:36:29,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 331.6666666666667) internal successors, (995), 3 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:29,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:29,684 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:29,684 INFO L175 Difference]: Start difference. First operand has 102 places, 94 transitions, 405 flow. Second operand 3 states and 995 transitions. [2023-11-19 07:36:29,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 141 transitions, 842 flow [2023-11-19 07:36:29,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 141 transitions, 834 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:36:29,701 INFO L231 Difference]: Finished difference. Result has 104 places, 95 transitions, 421 flow [2023-11-19 07:36:29,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=421, PETRI_PLACES=104, PETRI_TRANSITIONS=95} [2023-11-19 07:36:29,703 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 27 predicate places. [2023-11-19 07:36:29,703 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 95 transitions, 421 flow [2023-11-19 07:36:29,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 301.3333333333333) internal successors, (904), 3 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:29,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:29,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:29,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:36:29,704 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 07:36:29,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:29,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1425610286, now seen corresponding path program 1 times [2023-11-19 07:36:29,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:29,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854277083] [2023-11-19 07:36:29,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:29,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:29,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:31,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:31,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:31,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854277083] [2023-11-19 07:36:31,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854277083] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:31,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:31,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-19 07:36:31,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136321415] [2023-11-19 07:36:31,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:31,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:36:31,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:31,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:36:31,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:36:32,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 620 [2023-11-19 07:36:32,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 95 transitions, 421 flow. Second operand has 13 states, 13 states have (on average 260.46153846153845) internal successors, (3386), 13 states have internal predecessors, (3386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:32,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:32,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 620 [2023-11-19 07:36:32,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:33,799 INFO L124 PetriNetUnfolderBase]: 4704/8303 cut-off events. [2023-11-19 07:36:33,799 INFO L125 PetriNetUnfolderBase]: For 6398/6398 co-relation queries the response was YES. [2023-11-19 07:36:33,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21768 conditions, 8303 events. 4704/8303 cut-off events. For 6398/6398 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 49434 event pairs, 3724 based on Foata normal form. 0/7013 useless extension candidates. Maximal degree in co-relation 21258. Up to 7737 conditions per place. [2023-11-19 07:36:33,852 INFO L140 encePairwiseOnDemand]: 604/620 looper letters, 88 selfloop transitions, 26 changer transitions 1/122 dead transitions. [2023-11-19 07:36:33,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 122 transitions, 754 flow [2023-11-19 07:36:33,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 07:36:33,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-19 07:36:33,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3466 transitions. [2023-11-19 07:36:33,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4300248138957816 [2023-11-19 07:36:33,865 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3466 transitions. [2023-11-19 07:36:33,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3466 transitions. [2023-11-19 07:36:33,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:33,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3466 transitions. [2023-11-19 07:36:33,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 266.61538461538464) internal successors, (3466), 13 states have internal predecessors, (3466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:33,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 620.0) internal successors, (8680), 14 states have internal predecessors, (8680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:33,892 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 620.0) internal successors, (8680), 14 states have internal predecessors, (8680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:33,893 INFO L175 Difference]: Start difference. First operand has 104 places, 95 transitions, 421 flow. Second operand 13 states and 3466 transitions. [2023-11-19 07:36:33,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 122 transitions, 754 flow [2023-11-19 07:36:33,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 122 transitions, 750 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:36:33,908 INFO L231 Difference]: Finished difference. Result has 122 places, 111 transitions, 584 flow [2023-11-19 07:36:33,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=584, PETRI_PLACES=122, PETRI_TRANSITIONS=111} [2023-11-19 07:36:33,909 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 45 predicate places. [2023-11-19 07:36:33,910 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 111 transitions, 584 flow [2023-11-19 07:36:33,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 260.46153846153845) internal successors, (3386), 13 states have internal predecessors, (3386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:33,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:33,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:33,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:36:33,912 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 07:36:33,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:33,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1425610251, now seen corresponding path program 1 times [2023-11-19 07:36:33,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:33,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102172654] [2023-11-19 07:36:33,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:33,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:33,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:34,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:34,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:34,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102172654] [2023-11-19 07:36:34,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102172654] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:34,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:34,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-19 07:36:34,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630315734] [2023-11-19 07:36:34,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:34,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:36:34,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:34,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:36:34,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132