./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e386c4-5c4f-4eb3-a59d-01a3b312a5a0/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e386c4-5c4f-4eb3-a59d-01a3b312a5a0/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e386c4-5c4f-4eb3-a59d-01a3b312a5a0/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e386c4-5c4f-4eb3-a59d-01a3b312a5a0/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e386c4-5c4f-4eb3-a59d-01a3b312a5a0/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e386c4-5c4f-4eb3-a59d-01a3b312a5a0/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e7fe0631e7f950e2868c8cb954edca4f6de3fdffbf6debba58771511fbac2e8b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 18:08:36,089 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:08:36,092 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:08:36,133 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:08:36,134 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:08:36,138 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:08:36,140 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:08:36,144 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:08:36,148 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:08:36,149 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:08:36,152 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:08:36,154 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:08:36,155 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:08:36,160 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:08:36,162 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:08:36,163 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:08:36,165 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:08:36,167 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:08:36,169 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:08:36,172 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:08:36,175 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:08:36,177 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:08:36,179 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:08:36,180 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:08:36,188 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:08:36,191 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:08:36,192 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:08:36,193 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:08:36,193 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:08:36,195 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:08:36,196 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:08:36,197 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:08:36,199 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:08:36,201 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:08:36,203 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:08:36,203 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:08:36,204 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:08:36,204 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:08:36,205 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:08:36,206 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:08:36,207 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:08:36,208 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e386c4-5c4f-4eb3-a59d-01a3b312a5a0/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-25 18:08:36,247 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:08:36,248 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:08:36,248 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:08:36,249 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:08:36,250 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:08:36,250 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:08:36,251 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:08:36,251 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:08:36,251 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:08:36,251 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:08:36,252 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:08:36,253 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 18:08:36,253 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:08:36,253 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:08:36,253 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:08:36,254 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:08:36,254 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:08:36,254 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:08:36,254 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 18:08:36,254 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:08:36,255 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:08:36,255 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:08:36,255 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:08:36,255 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:08:36,255 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:08:36,256 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:08:36,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:08:36,256 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:08:36,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:08:36,257 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:08:36,257 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:08:36,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:08:36,258 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:08:36,258 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:08:36,258 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:08:36,259 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:08:36,259 INFO L138 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_e9e386c4-5c4f-4eb3-a59d-01a3b312a5a0/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e386c4-5c4f-4eb3-a59d-01a3b312a5a0/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7fe0631e7f950e2868c8cb954edca4f6de3fdffbf6debba58771511fbac2e8b [2022-11-25 18:08:36,577 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:08:36,602 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:08:36,605 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:08:36,606 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:08:36,607 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:08:36,608 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e386c4-5c4f-4eb3-a59d-01a3b312a5a0/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i [2022-11-25 18:08:39,737 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:08:40,045 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:08:40,045 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e386c4-5c4f-4eb3-a59d-01a3b312a5a0/sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i [2022-11-25 18:08:40,059 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e386c4-5c4f-4eb3-a59d-01a3b312a5a0/bin/uautomizer-ZsLfNo2U6R/data/76929787c/ed52499f9cd24e42b22881643e46d375/FLAG66326314c [2022-11-25 18:08:40,072 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e386c4-5c4f-4eb3-a59d-01a3b312a5a0/bin/uautomizer-ZsLfNo2U6R/data/76929787c/ed52499f9cd24e42b22881643e46d375 [2022-11-25 18:08:40,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:08:40,076 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:08:40,078 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:08:40,078 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:08:40,085 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:08:40,085 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:08:40" (1/1) ... [2022-11-25 18:08:40,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cf39d0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:08:40, skipping insertion in model container [2022-11-25 18:08:40,087 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:08:40" (1/1) ... [2022-11-25 18:08:40,097 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:08:40,137 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:08:40,541 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e386c4-5c4f-4eb3-a59d-01a3b312a5a0/sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i[30687,30700] [2022-11-25 18:08:40,548 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:08:40,564 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:08:40,634 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e386c4-5c4f-4eb3-a59d-01a3b312a5a0/sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i[30687,30700] [2022-11-25 18:08:40,635 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:08:40,689 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:08:40,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:08:40 WrapperNode [2022-11-25 18:08:40,690 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:08:40,692 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:08:40,692 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:08:40,692 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:08:40,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:08:40" (1/1) ... [2022-11-25 18:08:40,732 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:08:40" (1/1) ... [2022-11-25 18:08:40,770 INFO L138 Inliner]: procedures = 170, calls = 35, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 112 [2022-11-25 18:08:40,770 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:08:40,771 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:08:40,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:08:40,772 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:08:40,783 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:08:40" (1/1) ... [2022-11-25 18:08:40,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:08:40" (1/1) ... [2022-11-25 18:08:40,802 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:08:40" (1/1) ... [2022-11-25 18:08:40,802 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:08:40" (1/1) ... [2022-11-25 18:08:40,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:08:40" (1/1) ... [2022-11-25 18:08:40,820 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:08:40" (1/1) ... [2022-11-25 18:08:40,822 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:08:40" (1/1) ... [2022-11-25 18:08:40,823 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:08:40" (1/1) ... [2022-11-25 18:08:40,826 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:08:40,827 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:08:40,827 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:08:40,827 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:08:40,828 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:08:40" (1/1) ... [2022-11-25 18:08:40,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:08:40,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e386c4-5c4f-4eb3-a59d-01a3b312a5a0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:08:40,875 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e386c4-5c4f-4eb3-a59d-01a3b312a5a0/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:08:40,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e386c4-5c4f-4eb3-a59d-01a3b312a5a0/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:08:40,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 18:08:40,914 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-25 18:08:40,915 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-25 18:08:40,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 18:08:40,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:08:40,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 18:08:40,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 18:08:40,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:08:40,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:08:40,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:08:40,922 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 18:08:41,132 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:08:41,149 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:08:41,519 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:08:41,684 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:08:41,684 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-25 18:08:41,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:08:41 BoogieIcfgContainer [2022-11-25 18:08:41,688 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:08:41,690 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:08:41,691 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:08:41,695 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:08:41,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:08:40" (1/3) ... [2022-11-25 18:08:41,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a9e774a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:08:41, skipping insertion in model container [2022-11-25 18:08:41,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:08:40" (2/3) ... [2022-11-25 18:08:41,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a9e774a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:08:41, skipping insertion in model container [2022-11-25 18:08:41,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:08:41" (3/3) ... [2022-11-25 18:08:41,698 INFO L112 eAbstractionObserver]: Analyzing ICFG 36_stack_cas_p0_vs_concur.i [2022-11-25 18:08:41,709 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 18:08:41,722 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:08:41,722 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-25 18:08:41,722 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 18:08:41,832 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 18:08:41,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 110 transitions, 225 flow [2022-11-25 18:08:41,990 INFO L130 PetriNetUnfolder]: 10/121 cut-off events. [2022-11-25 18:08:41,991 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:08:41,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 121 events. 10/121 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 147 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 90. Up to 4 conditions per place. [2022-11-25 18:08:41,998 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 110 transitions, 225 flow [2022-11-25 18:08:42,003 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 110 transitions, 225 flow [2022-11-25 18:08:42,010 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 18:08:42,046 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 110 transitions, 225 flow [2022-11-25 18:08:42,051 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 110 transitions, 225 flow [2022-11-25 18:08:42,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 110 transitions, 225 flow [2022-11-25 18:08:42,136 INFO L130 PetriNetUnfolder]: 10/121 cut-off events. [2022-11-25 18:08:42,137 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:08:42,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 121 events. 10/121 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 147 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 90. Up to 4 conditions per place. [2022-11-25 18:08:42,142 INFO L119 LiptonReduction]: Number of co-enabled transitions 2156 [2022-11-25 18:08:47,023 INFO L134 LiptonReduction]: Checked pairs total: 2540 [2022-11-25 18:08:47,024 INFO L136 LiptonReduction]: Total number of compositions: 112 [2022-11-25 18:08:47,039 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:08:47,046 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5d7b4837, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:08:47,046 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-25 18:08:47,050 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2022-11-25 18:08:47,050 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:08:47,050 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:08:47,051 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 18:08:47,051 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-25 18:08:47,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:08:47,057 INFO L85 PathProgramCache]: Analyzing trace with hash 534059936, now seen corresponding path program 1 times [2022-11-25 18:08:47,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:08:47,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063290143] [2022-11-25 18:08:47,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:08:47,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:08:47,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:08:47,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:08:47,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:08:47,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063290143] [2022-11-25 18:08:47,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063290143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:08:47,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:08:47,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:08:47,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928828942] [2022-11-25 18:08:47,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:08:47,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:08:47,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:08:47,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:08:47,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:08:47,415 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 222 [2022-11-25 18:08:47,420 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 32 transitions, 69 flow. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:08:47,420 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:08:47,421 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 222 [2022-11-25 18:08:47,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:08:47,549 INFO L130 PetriNetUnfolder]: 41/102 cut-off events. [2022-11-25 18:08:47,549 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:08:47,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 102 events. 41/102 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 235 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 189. Up to 90 conditions per place. [2022-11-25 18:08:47,552 INFO L137 encePairwiseOnDemand]: 211/222 looper letters, 23 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2022-11-25 18:08:47,552 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 29 transitions, 113 flow [2022-11-25 18:08:47,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:08:47,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:08:47,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 312 transitions. [2022-11-25 18:08:47,578 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46846846846846846 [2022-11-25 18:08:47,579 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 312 transitions. [2022-11-25 18:08:47,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 312 transitions. [2022-11-25 18:08:47,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:08:47,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 312 transitions. [2022-11-25 18:08:47,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:08:47,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:08:47,602 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:08:47,604 INFO L175 Difference]: Start difference. First operand has 31 places, 32 transitions, 69 flow. Second operand 3 states and 312 transitions. [2022-11-25 18:08:47,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 29 transitions, 113 flow [2022-11-25 18:08:47,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 29 transitions, 113 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 18:08:47,610 INFO L231 Difference]: Finished difference. Result has 29 places, 27 transitions, 73 flow [2022-11-25 18:08:47,612 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=29, PETRI_TRANSITIONS=27} [2022-11-25 18:08:47,618 INFO L288 CegarLoopForPetriNet]: 31 programPoint places, -2 predicate places. [2022-11-25 18:08:47,618 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 27 transitions, 73 flow [2022-11-25 18:08:47,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:08:47,619 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:08:47,619 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-11-25 18:08:47,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 18:08:47,620 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-25 18:08:47,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:08:47,633 INFO L85 PathProgramCache]: Analyzing trace with hash -623919486, now seen corresponding path program 1 times [2022-11-25 18:08:47,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:08:47,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824080061] [2022-11-25 18:08:47,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:08:47,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:08:47,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:08:47,668 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 18:08:47,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:08:47,733 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 18:08:47,734 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 18:08:47,742 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-11-25 18:08:47,745 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-11-25 18:08:47,745 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-11-25 18:08:47,751 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-11-25 18:08:47,753 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-11-25 18:08:47,754 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-11-25 18:08:47,754 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-11-25 18:08:47,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-11-25 18:08:47,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-11-25 18:08:47,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-11-25 18:08:47,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-11-25 18:08:47,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-11-25 18:08:47,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-11-25 18:08:47,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-11-25 18:08:47,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-11-25 18:08:47,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-11-25 18:08:47,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-11-25 18:08:47,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-11-25 18:08:47,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-11-25 18:08:47,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-11-25 18:08:47,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-11-25 18:08:47,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 18:08:47,765 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-25 18:08:47,770 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 18:08:47,771 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-25 18:08:47,829 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 18:08:47,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 188 transitions, 388 flow [2022-11-25 18:08:47,903 INFO L130 PetriNetUnfolder]: 19/212 cut-off events. [2022-11-25 18:08:47,903 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 18:08:47,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 212 events. 19/212 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 549 event pairs, 0 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 167. Up to 6 conditions per place. [2022-11-25 18:08:47,910 INFO L82 GeneralOperation]: Start removeDead. Operand has 176 places, 188 transitions, 388 flow [2022-11-25 18:08:47,914 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 176 places, 188 transitions, 388 flow [2022-11-25 18:08:47,914 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 18:08:47,914 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 176 places, 188 transitions, 388 flow [2022-11-25 18:08:47,915 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 176 places, 188 transitions, 388 flow [2022-11-25 18:08:47,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 188 transitions, 388 flow [2022-11-25 18:08:47,957 INFO L130 PetriNetUnfolder]: 19/212 cut-off events. [2022-11-25 18:08:47,957 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 18:08:47,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 212 events. 19/212 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 549 event pairs, 0 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 167. Up to 6 conditions per place. [2022-11-25 18:08:47,970 INFO L119 LiptonReduction]: Number of co-enabled transitions 16324 [2022-11-25 18:09:02,877 INFO L134 LiptonReduction]: Checked pairs total: 40524 [2022-11-25 18:09:02,877 INFO L136 LiptonReduction]: Total number of compositions: 183 [2022-11-25 18:09:02,880 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:09:02,880 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5d7b4837, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:09:02,881 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-11-25 18:09:02,883 INFO L130 PetriNetUnfolder]: 0/9 cut-off events. [2022-11-25 18:09:02,883 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:09:02,884 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:09:02,884 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 18:09:02,884 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-11-25 18:09:02,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:09:02,885 INFO L85 PathProgramCache]: Analyzing trace with hash 956274917, now seen corresponding path program 1 times [2022-11-25 18:09:02,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:09:02,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768790695] [2022-11-25 18:09:02,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:09:02,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:09:02,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:02,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:09:02,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:09:02,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768790695] [2022-11-25 18:09:02,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768790695] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:09:02,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:09:02,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:09:02,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035912580] [2022-11-25 18:09:02,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:09:02,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 18:09:02,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:09:02,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 18:09:02,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 18:09:02,914 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 371 [2022-11-25 18:09:02,914 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 69 transitions, 150 flow. Second operand has 2 states, 2 states have (on average 156.0) internal successors, (312), 2 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:02,915 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:09:02,915 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 371 [2022-11-25 18:09:02,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:09:03,373 INFO L130 PetriNetUnfolder]: 1461/2494 cut-off events. [2022-11-25 18:09:03,373 INFO L131 PetriNetUnfolder]: For 67/67 co-relation queries the response was YES. [2022-11-25 18:09:03,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4933 conditions, 2494 events. 1461/2494 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 14541 event pairs, 1267 based on Foata normal form. 0/1932 useless extension candidates. Maximal degree in co-relation 3570. Up to 2359 conditions per place. [2022-11-25 18:09:03,393 INFO L137 encePairwiseOnDemand]: 359/371 looper letters, 46 selfloop transitions, 0 changer transitions 0/57 dead transitions. [2022-11-25 18:09:03,393 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 57 transitions, 218 flow [2022-11-25 18:09:03,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:09:03,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 18:09:03,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 366 transitions. [2022-11-25 18:09:03,396 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49326145552560646 [2022-11-25 18:09:03,397 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 366 transitions. [2022-11-25 18:09:03,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 366 transitions. [2022-11-25 18:09:03,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:09:03,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 366 transitions. [2022-11-25 18:09:03,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 183.0) internal successors, (366), 2 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:03,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 371.0) internal successors, (1113), 3 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:03,404 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 371.0) internal successors, (1113), 3 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:03,404 INFO L175 Difference]: Start difference. First operand has 66 places, 69 transitions, 150 flow. Second operand 2 states and 366 transitions. [2022-11-25 18:09:03,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 57 transitions, 218 flow [2022-11-25 18:09:03,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 57 transitions, 216 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-25 18:09:03,408 INFO L231 Difference]: Finished difference. Result has 58 places, 57 transitions, 124 flow [2022-11-25 18:09:03,408 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=124, PETRI_PLACES=58, PETRI_TRANSITIONS=57} [2022-11-25 18:09:03,409 INFO L288 CegarLoopForPetriNet]: 66 programPoint places, -8 predicate places. [2022-11-25 18:09:03,409 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 57 transitions, 124 flow [2022-11-25 18:09:03,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 156.0) internal successors, (312), 2 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:03,410 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:09:03,410 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 18:09:03,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 18:09:03,411 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-11-25 18:09:03,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:09:03,411 INFO L85 PathProgramCache]: Analyzing trace with hash -420247809, now seen corresponding path program 1 times [2022-11-25 18:09:03,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:09:03,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962565996] [2022-11-25 18:09:03,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:09:03,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:09:03,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:03,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:09:03,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:09:03,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962565996] [2022-11-25 18:09:03,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962565996] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:09:03,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:09:03,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:09:03,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887947558] [2022-11-25 18:09:03,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:09:03,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:09:03,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:09:03,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:09:03,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:09:03,538 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 371 [2022-11-25 18:09:03,546 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 57 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:03,546 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:09:03,546 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 371 [2022-11-25 18:09:03,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:09:04,048 INFO L130 PetriNetUnfolder]: 1487/2518 cut-off events. [2022-11-25 18:09:04,048 INFO L131 PetriNetUnfolder]: For 64/64 co-relation queries the response was YES. [2022-11-25 18:09:04,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4990 conditions, 2518 events. 1487/2518 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 14992 event pairs, 691 based on Foata normal form. 10/1967 useless extension candidates. Maximal degree in co-relation 4985. Up to 2377 conditions per place. [2022-11-25 18:09:04,066 INFO L137 encePairwiseOnDemand]: 362/371 looper letters, 49 selfloop transitions, 3 changer transitions 0/63 dead transitions. [2022-11-25 18:09:04,068 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 63 transitions, 245 flow [2022-11-25 18:09:04,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:09:04,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:09:04,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 517 transitions. [2022-11-25 18:09:04,071 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46451033243486073 [2022-11-25 18:09:04,071 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 517 transitions. [2022-11-25 18:09:04,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 517 transitions. [2022-11-25 18:09:04,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:09:04,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 517 transitions. [2022-11-25 18:09:04,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:04,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 371.0) internal successors, (1484), 4 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:04,077 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 371.0) internal successors, (1484), 4 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:04,077 INFO L175 Difference]: Start difference. First operand has 58 places, 57 transitions, 124 flow. Second operand 3 states and 517 transitions. [2022-11-25 18:09:04,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 63 transitions, 245 flow [2022-11-25 18:09:04,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 63 transitions, 245 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 18:09:04,082 INFO L231 Difference]: Finished difference. Result has 61 places, 59 transitions, 153 flow [2022-11-25 18:09:04,082 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=61, PETRI_TRANSITIONS=59} [2022-11-25 18:09:04,085 INFO L288 CegarLoopForPetriNet]: 66 programPoint places, -5 predicate places. [2022-11-25 18:09:04,086 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 59 transitions, 153 flow [2022-11-25 18:09:04,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:04,086 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:09:04,087 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:09:04,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 18:09:04,087 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-11-25 18:09:04,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:09:04,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1650787330, now seen corresponding path program 1 times [2022-11-25 18:09:04,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:09:04,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581070371] [2022-11-25 18:09:04,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:09:04,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:09:04,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:04,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:09:04,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:09:04,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581070371] [2022-11-25 18:09:04,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581070371] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:09:04,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:09:04,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:09:04,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959176535] [2022-11-25 18:09:04,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:09:04,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:09:04,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:09:04,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:09:04,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:09:04,635 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 371 [2022-11-25 18:09:04,636 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 59 transitions, 153 flow. Second operand has 5 states, 5 states have (on average 145.6) internal successors, (728), 5 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:04,636 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:09:04,636 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 371 [2022-11-25 18:09:04,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:09:05,505 INFO L130 PetriNetUnfolder]: 1731/3001 cut-off events. [2022-11-25 18:09:05,506 INFO L131 PetriNetUnfolder]: For 258/258 co-relation queries the response was YES. [2022-11-25 18:09:05,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6413 conditions, 3001 events. 1731/3001 cut-off events. For 258/258 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 18566 event pairs, 454 based on Foata normal form. 0/2337 useless extension candidates. Maximal degree in co-relation 6406. Up to 2567 conditions per place. [2022-11-25 18:09:05,528 INFO L137 encePairwiseOnDemand]: 360/371 looper letters, 88 selfloop transitions, 11 changer transitions 0/109 dead transitions. [2022-11-25 18:09:05,528 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 109 transitions, 495 flow [2022-11-25 18:09:05,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:09:05,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 18:09:05,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 969 transitions. [2022-11-25 18:09:05,531 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4353099730458221 [2022-11-25 18:09:05,532 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 969 transitions. [2022-11-25 18:09:05,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 969 transitions. [2022-11-25 18:09:05,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:09:05,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 969 transitions. [2022-11-25 18:09:05,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 161.5) internal successors, (969), 6 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:05,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 371.0) internal successors, (2597), 7 states have internal predecessors, (2597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:05,542 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 371.0) internal successors, (2597), 7 states have internal predecessors, (2597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:05,543 INFO L175 Difference]: Start difference. First operand has 61 places, 59 transitions, 153 flow. Second operand 6 states and 969 transitions. [2022-11-25 18:09:05,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 109 transitions, 495 flow [2022-11-25 18:09:05,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 109 transitions, 492 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:09:05,550 INFO L231 Difference]: Finished difference. Result has 68 places, 67 transitions, 231 flow [2022-11-25 18:09:05,550 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=231, PETRI_PLACES=68, PETRI_TRANSITIONS=67} [2022-11-25 18:09:05,552 INFO L288 CegarLoopForPetriNet]: 66 programPoint places, 2 predicate places. [2022-11-25 18:09:05,553 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 67 transitions, 231 flow [2022-11-25 18:09:05,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 145.6) internal successors, (728), 5 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:05,554 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:09:05,554 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-25 18:09:05,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 18:09:05,554 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-11-25 18:09:05,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:09:05,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1404263239, now seen corresponding path program 1 times [2022-11-25 18:09:05,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:09:05,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583579789] [2022-11-25 18:09:05,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:09:05,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:09:05,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:09:05,574 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 18:09:05,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:09:05,598 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 18:09:05,598 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 18:09:05,598 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2022-11-25 18:09:05,600 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 31 remaining) [2022-11-25 18:09:05,600 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 31 remaining) [2022-11-25 18:09:05,601 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 31 remaining) [2022-11-25 18:09:05,601 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 31 remaining) [2022-11-25 18:09:05,601 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 31 remaining) [2022-11-25 18:09:05,601 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 31 remaining) [2022-11-25 18:09:05,602 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 31 remaining) [2022-11-25 18:09:05,604 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 31 remaining) [2022-11-25 18:09:05,604 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 31 remaining) [2022-11-25 18:09:05,605 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 31 remaining) [2022-11-25 18:09:05,605 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 31 remaining) [2022-11-25 18:09:05,605 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 31 remaining) [2022-11-25 18:09:05,605 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 31 remaining) [2022-11-25 18:09:05,605 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 31 remaining) [2022-11-25 18:09:05,606 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 31 remaining) [2022-11-25 18:09:05,606 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 31 remaining) [2022-11-25 18:09:05,606 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 31 remaining) [2022-11-25 18:09:05,606 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 31 remaining) [2022-11-25 18:09:05,607 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 31 remaining) [2022-11-25 18:09:05,607 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 31 remaining) [2022-11-25 18:09:05,607 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 31 remaining) [2022-11-25 18:09:05,607 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 31 remaining) [2022-11-25 18:09:05,607 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 31 remaining) [2022-11-25 18:09:05,608 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 31 remaining) [2022-11-25 18:09:05,608 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 31 remaining) [2022-11-25 18:09:05,608 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 31 remaining) [2022-11-25 18:09:05,608 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 31 remaining) [2022-11-25 18:09:05,608 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 31 remaining) [2022-11-25 18:09:05,609 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 31 remaining) [2022-11-25 18:09:05,609 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 31 remaining) [2022-11-25 18:09:05,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 18:09:05,609 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-25 18:09:05,611 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 18:09:05,611 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-25 18:09:05,666 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 18:09:05,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 248 places, 266 transitions, 553 flow [2022-11-25 18:09:05,724 INFO L130 PetriNetUnfolder]: 28/303 cut-off events. [2022-11-25 18:09:05,725 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-25 18:09:05,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 319 conditions, 303 events. 28/303 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1026 event pairs, 0 based on Foata normal form. 0/241 useless extension candidates. Maximal degree in co-relation 244. Up to 8 conditions per place. [2022-11-25 18:09:05,730 INFO L82 GeneralOperation]: Start removeDead. Operand has 248 places, 266 transitions, 553 flow [2022-11-25 18:09:05,734 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 248 places, 266 transitions, 553 flow [2022-11-25 18:09:05,734 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 18:09:05,735 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 248 places, 266 transitions, 553 flow [2022-11-25 18:09:05,737 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 248 places, 266 transitions, 553 flow [2022-11-25 18:09:05,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 248 places, 266 transitions, 553 flow [2022-11-25 18:09:05,785 INFO L130 PetriNetUnfolder]: 28/303 cut-off events. [2022-11-25 18:09:05,785 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-25 18:09:05,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 319 conditions, 303 events. 28/303 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1026 event pairs, 0 based on Foata normal form. 0/241 useless extension candidates. Maximal degree in co-relation 244. Up to 8 conditions per place. [2022-11-25 18:09:05,811 INFO L119 LiptonReduction]: Number of co-enabled transitions 42504 [2022-11-25 18:09:22,728 INFO L134 LiptonReduction]: Checked pairs total: 98691 [2022-11-25 18:09:22,728 INFO L136 LiptonReduction]: Total number of compositions: 245 [2022-11-25 18:09:22,730 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:09:22,731 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5d7b4837, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:09:22,731 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2022-11-25 18:09:22,733 INFO L130 PetriNetUnfolder]: 0/8 cut-off events. [2022-11-25 18:09:22,733 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:09:22,733 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:09:22,733 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 18:09:22,734 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-25 18:09:22,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:09:22,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1521513108, now seen corresponding path program 1 times [2022-11-25 18:09:22,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:09:22,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130162226] [2022-11-25 18:09:22,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:09:22,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:09:22,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:22,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:09:22,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:09:22,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130162226] [2022-11-25 18:09:22,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130162226] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:09:22,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:09:22,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:09:22,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028979461] [2022-11-25 18:09:22,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:09:22,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 18:09:22,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:09:22,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 18:09:22,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 18:09:22,750 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 511 [2022-11-25 18:09:22,751 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 101 transitions, 223 flow. Second operand has 2 states, 2 states have (on average 218.0) internal successors, (436), 2 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:22,751 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:09:22,751 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 511 [2022-11-25 18:09:22,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:09:30,733 INFO L130 PetriNetUnfolder]: 52465/73393 cut-off events. [2022-11-25 18:09:30,734 INFO L131 PetriNetUnfolder]: For 2887/2887 co-relation queries the response was YES. [2022-11-25 18:09:30,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147265 conditions, 73393 events. 52465/73393 cut-off events. For 2887/2887 co-relation queries the response was YES. Maximal size of possible extension queue 2028. Compared 498117 event pairs, 45157 based on Foata normal form. 0/54961 useless extension candidates. Maximal degree in co-relation 55991. Up to 71841 conditions per place. [2022-11-25 18:09:31,285 INFO L137 encePairwiseOnDemand]: 494/511 looper letters, 70 selfloop transitions, 0 changer transitions 0/84 dead transitions. [2022-11-25 18:09:31,285 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 84 transitions, 329 flow [2022-11-25 18:09:31,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:09:31,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 18:09:31,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 519 transitions. [2022-11-25 18:09:31,288 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5078277886497065 [2022-11-25 18:09:31,288 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 519 transitions. [2022-11-25 18:09:31,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 519 transitions. [2022-11-25 18:09:31,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:09:31,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 519 transitions. [2022-11-25 18:09:31,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 259.5) internal successors, (519), 2 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:31,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 511.0) internal successors, (1533), 3 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:31,293 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 511.0) internal successors, (1533), 3 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:31,294 INFO L175 Difference]: Start difference. First operand has 96 places, 101 transitions, 223 flow. Second operand 2 states and 519 transitions. [2022-11-25 18:09:31,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 84 transitions, 329 flow [2022-11-25 18:09:31,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 84 transitions, 323 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-11-25 18:09:31,305 INFO L231 Difference]: Finished difference. Result has 84 places, 84 transitions, 183 flow [2022-11-25 18:09:31,305 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=183, PETRI_PLACES=84, PETRI_TRANSITIONS=84} [2022-11-25 18:09:31,308 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, -12 predicate places. [2022-11-25 18:09:31,308 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 84 transitions, 183 flow [2022-11-25 18:09:31,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 218.0) internal successors, (436), 2 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:31,309 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:09:31,309 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 18:09:31,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 18:09:31,309 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-25 18:09:31,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:09:31,310 INFO L85 PathProgramCache]: Analyzing trace with hash -77732623, now seen corresponding path program 1 times [2022-11-25 18:09:31,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:09:31,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750634502] [2022-11-25 18:09:31,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:09:31,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:09:31,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:31,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:09:31,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:09:31,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750634502] [2022-11-25 18:09:31,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750634502] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:09:31,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:09:31,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:09:31,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167119938] [2022-11-25 18:09:31,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:09:31,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:09:31,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:09:31,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:09:31,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:09:31,365 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 511 [2022-11-25 18:09:31,366 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 84 transitions, 183 flow. Second operand has 3 states, 3 states have (on average 216.66666666666666) internal successors, (650), 3 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:31,367 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:09:31,367 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 511 [2022-11-25 18:09:31,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:09:38,248 INFO L130 PetriNetUnfolder]: 52743/73194 cut-off events. [2022-11-25 18:09:38,248 INFO L131 PetriNetUnfolder]: For 1392/1392 co-relation queries the response was YES. [2022-11-25 18:09:38,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146817 conditions, 73194 events. 52743/73194 cut-off events. For 1392/1392 co-relation queries the response was YES. Maximal size of possible extension queue 2148. Compared 496334 event pairs, 31409 based on Foata normal form. 34/54854 useless extension candidates. Maximal degree in co-relation 146811. Up to 72157 conditions per place. [2022-11-25 18:09:38,795 INFO L137 encePairwiseOnDemand]: 498/511 looper letters, 75 selfloop transitions, 4 changer transitions 0/93 dead transitions. [2022-11-25 18:09:38,796 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 93 transitions, 369 flow [2022-11-25 18:09:38,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:09:38,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:09:38,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 733 transitions. [2022-11-25 18:09:38,799 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4781474233529028 [2022-11-25 18:09:38,799 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 733 transitions. [2022-11-25 18:09:38,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 733 transitions. [2022-11-25 18:09:38,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:09:38,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 733 transitions. [2022-11-25 18:09:38,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 244.33333333333334) internal successors, (733), 3 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:38,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 511.0) internal successors, (2044), 4 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:38,809 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 511.0) internal successors, (2044), 4 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:38,809 INFO L175 Difference]: Start difference. First operand has 84 places, 84 transitions, 183 flow. Second operand 3 states and 733 transitions. [2022-11-25 18:09:38,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 93 transitions, 369 flow [2022-11-25 18:09:38,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 93 transitions, 369 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 18:09:38,813 INFO L231 Difference]: Finished difference. Result has 87 places, 87 transitions, 225 flow [2022-11-25 18:09:38,814 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=225, PETRI_PLACES=87, PETRI_TRANSITIONS=87} [2022-11-25 18:09:38,816 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, -9 predicate places. [2022-11-25 18:09:38,816 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 87 transitions, 225 flow [2022-11-25 18:09:38,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 216.66666666666666) internal successors, (650), 3 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:38,818 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:09:38,818 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:09:38,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 18:09:38,820 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-25 18:09:38,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:09:38,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1744655690, now seen corresponding path program 1 times [2022-11-25 18:09:38,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:09:38,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167339736] [2022-11-25 18:09:38,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:09:38,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:09:38,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:38,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:09:38,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:09:38,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167339736] [2022-11-25 18:09:38,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167339736] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:09:38,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:09:38,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:09:38,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007145074] [2022-11-25 18:09:38,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:09:38,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:09:38,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:09:38,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:09:38,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:09:38,928 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 511 [2022-11-25 18:09:38,930 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 87 transitions, 225 flow. Second operand has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:38,930 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:09:38,930 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 511 [2022-11-25 18:09:38,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:09:46,009 INFO L130 PetriNetUnfolder]: 51735/72304 cut-off events. [2022-11-25 18:09:46,009 INFO L131 PetriNetUnfolder]: For 6025/6025 co-relation queries the response was YES. [2022-11-25 18:09:46,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155893 conditions, 72304 events. 51735/72304 cut-off events. For 6025/6025 co-relation queries the response was YES. Maximal size of possible extension queue 2132. Compared 498116 event pairs, 41963 based on Foata normal form. 926/54718 useless extension candidates. Maximal degree in co-relation 155885. Up to 67845 conditions per place. [2022-11-25 18:09:46,576 INFO L137 encePairwiseOnDemand]: 509/511 looper letters, 117 selfloop transitions, 1 changer transitions 0/132 dead transitions. [2022-11-25 18:09:46,576 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 132 transitions, 577 flow [2022-11-25 18:09:46,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:09:46,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:09:46,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 761 transitions. [2022-11-25 18:09:46,580 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4964122635355512 [2022-11-25 18:09:46,580 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 761 transitions. [2022-11-25 18:09:46,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 761 transitions. [2022-11-25 18:09:46,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:09:46,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 761 transitions. [2022-11-25 18:09:46,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 253.66666666666666) internal successors, (761), 3 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:46,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 511.0) internal successors, (2044), 4 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:46,589 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 511.0) internal successors, (2044), 4 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:46,589 INFO L175 Difference]: Start difference. First operand has 87 places, 87 transitions, 225 flow. Second operand 3 states and 761 transitions. [2022-11-25 18:09:46,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 132 transitions, 577 flow [2022-11-25 18:09:46,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 132 transitions, 573 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:09:46,597 INFO L231 Difference]: Finished difference. Result has 88 places, 86 transitions, 221 flow [2022-11-25 18:09:46,598 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=221, PETRI_PLACES=88, PETRI_TRANSITIONS=86} [2022-11-25 18:09:46,599 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, -8 predicate places. [2022-11-25 18:09:46,599 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 86 transitions, 221 flow [2022-11-25 18:09:46,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:46,600 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:09:46,600 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:09:46,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 18:09:46,601 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-25 18:09:46,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:09:46,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1744796616, now seen corresponding path program 1 times [2022-11-25 18:09:46,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:09:46,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798506637] [2022-11-25 18:09:46,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:09:46,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:09:46,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:46,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:09:46,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:09:46,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798506637] [2022-11-25 18:09:46,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798506637] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:09:46,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:09:46,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:09:46,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278464106] [2022-11-25 18:09:46,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:09:46,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:09:46,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:09:46,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:09:46,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:09:47,003 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 511 [2022-11-25 18:09:47,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 86 transitions, 221 flow. Second operand has 5 states, 5 states have (on average 207.6) internal successors, (1038), 5 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:47,005 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:09:47,005 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 511 [2022-11-25 18:09:47,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand