./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-complex/safestack_relacy.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601bc30a-0ba2-40e5-9a23-b326908818b0/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601bc30a-0ba2-40e5-9a23-b326908818b0/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_601bc30a-0ba2-40e5-9a23-b326908818b0/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601bc30a-0ba2-40e5-9a23-b326908818b0/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-complex/safestack_relacy.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601bc30a-0ba2-40e5-9a23-b326908818b0/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_601bc30a-0ba2-40e5-9a23-b326908818b0/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 1d61eb304445c3cb39dfadfa4748d680ea5f0f4958f8bc176e8bc3c77c47e674 --- 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 16:51:26,983 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 16:51:26,985 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 16:51:27,008 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 16:51:27,009 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 16:51:27,010 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 16:51:27,011 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 16:51:27,014 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 16:51:27,016 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 16:51:27,017 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 16:51:27,018 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 16:51:27,019 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 16:51:27,020 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 16:51:27,021 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 16:51:27,022 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 16:51:27,024 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 16:51:27,025 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 16:51:27,026 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 16:51:27,028 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 16:51:27,031 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 16:51:27,033 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 16:51:27,041 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 16:51:27,042 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 16:51:27,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 16:51:27,048 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 16:51:27,048 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 16:51:27,049 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 16:51:27,050 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 16:51:27,051 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 16:51:27,052 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 16:51:27,052 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 16:51:27,053 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 16:51:27,054 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 16:51:27,067 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 16:51:27,070 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 16:51:27,072 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 16:51:27,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 16:51:27,073 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 16:51:27,073 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 16:51:27,078 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 16:51:27,079 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 16:51:27,080 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601bc30a-0ba2-40e5-9a23-b326908818b0/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-25 16:51:27,132 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 16:51:27,132 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 16:51:27,133 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 16:51:27,133 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 16:51:27,134 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 16:51:27,135 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 16:51:27,135 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 16:51:27,136 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 16:51:27,136 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 16:51:27,136 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 16:51:27,138 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 16:51:27,138 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 16:51:27,138 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 16:51:27,139 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 16:51:27,139 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 16:51:27,139 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 16:51:27,139 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 16:51:27,140 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 16:51:27,140 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 16:51:27,142 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 16:51:27,142 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 16:51:27,147 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 16:51:27,148 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 16:51:27,149 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 16:51:27,149 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 16:51:27,149 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 16:51:27,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:51:27,150 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 16:51:27,151 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 16:51:27,151 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 16:51:27,151 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 16:51:27,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 16:51:27,152 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 16:51:27,152 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 16:51:27,152 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 16:51:27,153 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 16:51:27,153 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_601bc30a-0ba2-40e5-9a23-b326908818b0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601bc30a-0ba2-40e5-9a23-b326908818b0/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d61eb304445c3cb39dfadfa4748d680ea5f0f4958f8bc176e8bc3c77c47e674 [2022-11-25 16:51:27,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 16:51:27,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 16:51:27,497 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 16:51:27,499 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 16:51:27,500 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 16:51:27,501 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601bc30a-0ba2-40e5-9a23-b326908818b0/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread-complex/safestack_relacy.i [2022-11-25 16:51:30,688 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 16:51:31,064 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 16:51:31,064 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601bc30a-0ba2-40e5-9a23-b326908818b0/sv-benchmarks/c/pthread-complex/safestack_relacy.i [2022-11-25 16:51:31,095 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601bc30a-0ba2-40e5-9a23-b326908818b0/bin/uautomizer-ZsLfNo2U6R/data/913d5bf8a/b962120480a0433e9590b0ee202d6b9f/FLAG161f079c8 [2022-11-25 16:51:31,116 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601bc30a-0ba2-40e5-9a23-b326908818b0/bin/uautomizer-ZsLfNo2U6R/data/913d5bf8a/b962120480a0433e9590b0ee202d6b9f [2022-11-25 16:51:31,121 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 16:51:31,124 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 16:51:31,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 16:51:31,127 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 16:51:31,132 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 16:51:31,133 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:51:31" (1/1) ... [2022-11-25 16:51:31,134 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f50e921 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:51:31, skipping insertion in model container [2022-11-25 16:51:31,135 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:51:31" (1/1) ... [2022-11-25 16:51:31,144 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 16:51:31,219 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 16:51:32,059 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:51:32,060 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:51:32,063 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:51:32,065 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:51:32,067 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:51:32,068 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:51:32,070 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:51:32,071 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:51:32,073 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:51:32,074 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:51:32,100 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_601bc30a-0ba2-40e5-9a23-b326908818b0/sv-benchmarks/c/pthread-complex/safestack_relacy.i[78860,78873] [2022-11-25 16:51:32,107 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:51:32,118 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 16:51:32,173 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:51:32,173 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:51:32,180 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:51:32,184 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:51:32,185 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:51:32,190 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:51:32,191 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:51:32,192 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:51:32,192 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:51:32,205 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:51:32,216 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_601bc30a-0ba2-40e5-9a23-b326908818b0/sv-benchmarks/c/pthread-complex/safestack_relacy.i[78860,78873] [2022-11-25 16:51:32,223 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:51:32,383 INFO L208 MainTranslator]: Completed translation [2022-11-25 16:51:32,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:51:32 WrapperNode [2022-11-25 16:51:32,384 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 16:51:32,386 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 16:51:32,387 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 16:51:32,387 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 16:51:32,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:51:32" (1/1) ... [2022-11-25 16:51:32,445 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:51:32" (1/1) ... [2022-11-25 16:51:32,522 INFO L138 Inliner]: procedures = 481, calls = 74, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 299 [2022-11-25 16:51:32,525 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 16:51:32,526 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 16:51:32,526 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 16:51:32,527 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 16:51:32,537 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:51:32" (1/1) ... [2022-11-25 16:51:32,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:51:32" (1/1) ... [2022-11-25 16:51:32,555 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:51:32" (1/1) ... [2022-11-25 16:51:32,560 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:51:32" (1/1) ... [2022-11-25 16:51:32,572 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:51:32" (1/1) ... [2022-11-25 16:51:32,592 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:51:32" (1/1) ... [2022-11-25 16:51:32,604 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:51:32" (1/1) ... [2022-11-25 16:51:32,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:51:32" (1/1) ... [2022-11-25 16:51:32,624 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 16:51:32,625 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 16:51:32,626 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 16:51:32,626 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 16:51:32,627 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:51:32" (1/1) ... [2022-11-25 16:51:32,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:51:32,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601bc30a-0ba2-40e5-9a23-b326908818b0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:51:32,659 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601bc30a-0ba2-40e5-9a23-b326908818b0/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 16:51:32,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601bc30a-0ba2-40e5-9a23-b326908818b0/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 16:51:32,711 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 16:51:32,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 16:51:32,711 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 16:51:32,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 16:51:32,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 16:51:32,712 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2022-11-25 16:51:32,713 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2022-11-25 16:51:32,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 16:51:32,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 16:51:32,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 16:51:32,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 16:51:32,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 16:51:32,718 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 16:51:33,157 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 16:51:33,160 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 16:51:33,631 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 16:51:33,750 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 16:51:33,750 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-25 16:51:33,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:51:33 BoogieIcfgContainer [2022-11-25 16:51:33,753 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 16:51:33,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 16:51:33,756 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 16:51:33,760 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 16:51:33,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 04:51:31" (1/3) ... [2022-11-25 16:51:33,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e06596c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:51:33, skipping insertion in model container [2022-11-25 16:51:33,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:51:32" (2/3) ... [2022-11-25 16:51:33,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e06596c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:51:33, skipping insertion in model container [2022-11-25 16:51:33,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:51:33" (3/3) ... [2022-11-25 16:51:33,764 INFO L112 eAbstractionObserver]: Analyzing ICFG safestack_relacy.i [2022-11-25 16:51:33,774 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 16:51:33,786 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 16:51:33,787 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-25 16:51:33,787 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 16:51:33,900 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-25 16:51:33,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 296 places, 310 transitions, 628 flow [2022-11-25 16:51:34,126 INFO L130 PetriNetUnfolder]: 19/325 cut-off events. [2022-11-25 16:51:34,127 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 16:51:34,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331 conditions, 325 events. 19/325 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 561 event pairs, 0 based on Foata normal form. 0/287 useless extension candidates. Maximal degree in co-relation 213. Up to 4 conditions per place. [2022-11-25 16:51:34,140 INFO L82 GeneralOperation]: Start removeDead. Operand has 296 places, 310 transitions, 628 flow [2022-11-25 16:51:34,157 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 293 places, 306 transitions, 620 flow [2022-11-25 16:51:34,164 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 16:51:34,197 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 293 places, 306 transitions, 620 flow [2022-11-25 16:51:34,207 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 293 places, 306 transitions, 620 flow [2022-11-25 16:51:34,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 293 places, 306 transitions, 620 flow [2022-11-25 16:51:34,299 INFO L130 PetriNetUnfolder]: 18/321 cut-off events. [2022-11-25 16:51:34,299 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 16:51:34,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327 conditions, 321 events. 18/321 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 547 event pairs, 0 based on Foata normal form. 0/284 useless extension candidates. Maximal degree in co-relation 213. Up to 4 conditions per place. [2022-11-25 16:51:34,312 INFO L119 LiptonReduction]: Number of co-enabled transitions 9450 [2022-11-25 16:51:47,339 INFO L134 LiptonReduction]: Checked pairs total: 10171 [2022-11-25 16:51:47,340 INFO L136 LiptonReduction]: Total number of compositions: 317 [2022-11-25 16:51:47,356 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 16:51:47,368 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;@2eb9ae2c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 16:51:47,368 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-25 16:51:47,371 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-11-25 16:51:47,371 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 16:51:47,371 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:51:47,372 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 16:51:47,372 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-25 16:51:47,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:51:47,380 INFO L85 PathProgramCache]: Analyzing trace with hash 42815, now seen corresponding path program 1 times [2022-11-25 16:51:47,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:51:47,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721996902] [2022-11-25 16:51:47,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:51:47,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:51:47,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:47,886 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 16:51:47,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:51:47,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721996902] [2022-11-25 16:51:47,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721996902] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:51:47,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:51:47,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 16:51:47,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783563538] [2022-11-25 16:51:47,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:51:47,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:51:47,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:51:47,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:51:47,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:51:47,985 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 627 [2022-11-25 16:51:47,993 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 52 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 282.6666666666667) internal successors, (848), 3 states have internal predecessors, (848), 0 states have call successors, (0), 0 states 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 16:51:47,993 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:51:47,994 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 627 [2022-11-25 16:51:47,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:51:48,176 INFO L130 PetriNetUnfolder]: 147/294 cut-off events. [2022-11-25 16:51:48,176 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 16:51:48,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 594 conditions, 294 events. 147/294 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 984 event pairs, 110 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 566. Up to 293 conditions per place. [2022-11-25 16:51:48,179 INFO L137 encePairwiseOnDemand]: 616/627 looper letters, 40 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2022-11-25 16:51:48,180 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 42 transitions, 174 flow [2022-11-25 16:51:48,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:51:48,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:51:48,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 897 transitions. [2022-11-25 16:51:48,208 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4768740031897927 [2022-11-25 16:51:48,210 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 897 transitions. [2022-11-25 16:51:48,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 897 transitions. [2022-11-25 16:51:48,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:51:48,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 897 transitions. [2022-11-25 16:51:48,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 299.0) internal successors, (897), 3 states have internal predecessors, (897), 0 states have call successors, (0), 0 states 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 16:51:48,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 627.0) internal successors, (2508), 4 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states 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 16:51:48,249 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 627.0) internal successors, (2508), 4 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states 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 16:51:48,252 INFO L175 Difference]: Start difference. First operand has 46 places, 52 transitions, 112 flow. Second operand 3 states and 897 transitions. [2022-11-25 16:51:48,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 42 transitions, 174 flow [2022-11-25 16:51:48,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 42 transitions, 174 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 16:51:48,261 INFO L231 Difference]: Finished difference. Result has 40 places, 42 transitions, 94 flow [2022-11-25 16:51:48,270 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=627, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=40, PETRI_TRANSITIONS=42} [2022-11-25 16:51:48,275 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -6 predicate places. [2022-11-25 16:51:48,275 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 42 transitions, 94 flow [2022-11-25 16:51:48,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 282.6666666666667) internal successors, (848), 3 states have internal predecessors, (848), 0 states have call successors, (0), 0 states 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 16:51:48,276 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:51:48,277 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 16:51:48,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 16:51:48,277 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-25 16:51:48,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:51:48,290 INFO L85 PathProgramCache]: Analyzing trace with hash 43301, now seen corresponding path program 1 times [2022-11-25 16:51:48,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:51:48,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703164340] [2022-11-25 16:51:48,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:51:48,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:51:48,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:48,410 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 16:51:48,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:51:48,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703164340] [2022-11-25 16:51:48,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703164340] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:51:48,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:51:48,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 16:51:48,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488638672] [2022-11-25 16:51:48,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:51:48,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:51:48,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:51:48,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:51:48,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:51:48,448 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 627 [2022-11-25 16:51:48,450 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 42 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 282.6666666666667) internal successors, (848), 3 states have internal predecessors, (848), 0 states have call successors, (0), 0 states 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 16:51:48,450 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:51:48,450 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 627 [2022-11-25 16:51:48,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:51:48,699 INFO L130 PetriNetUnfolder]: 293/586 cut-off events. [2022-11-25 16:51:48,699 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 16:51:48,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1183 conditions, 586 events. 293/586 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2538 event pairs, 220 based on Foata normal form. 0/321 useless extension candidates. Maximal degree in co-relation 1176. Up to 294 conditions per place. [2022-11-25 16:51:48,703 INFO L137 encePairwiseOnDemand]: 624/627 looper letters, 78 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2022-11-25 16:51:48,703 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 81 transitions, 338 flow [2022-11-25 16:51:48,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:51:48,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:51:48,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 927 transitions. [2022-11-25 16:51:48,707 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49282296650717705 [2022-11-25 16:51:48,707 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 927 transitions. [2022-11-25 16:51:48,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 927 transitions. [2022-11-25 16:51:48,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:51:48,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 927 transitions. [2022-11-25 16:51:48,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 0 states have call successors, (0), 0 states 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 16:51:48,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 627.0) internal successors, (2508), 4 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states 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 16:51:48,716 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 627.0) internal successors, (2508), 4 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states 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 16:51:48,716 INFO L175 Difference]: Start difference. First operand has 40 places, 42 transitions, 94 flow. Second operand 3 states and 927 transitions. [2022-11-25 16:51:48,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 81 transitions, 338 flow [2022-11-25 16:51:48,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 81 transitions, 337 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 16:51:48,719 INFO L231 Difference]: Finished difference. Result has 42 places, 43 transitions, 105 flow [2022-11-25 16:51:48,719 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=627, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=42, PETRI_TRANSITIONS=43} [2022-11-25 16:51:48,720 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -4 predicate places. [2022-11-25 16:51:48,720 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 43 transitions, 105 flow [2022-11-25 16:51:48,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 282.6666666666667) internal successors, (848), 3 states have internal predecessors, (848), 0 states have call successors, (0), 0 states 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 16:51:48,721 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:51:48,722 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 16:51:48,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 16:51:48,722 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-25 16:51:48,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:51:48,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1347409, now seen corresponding path program 1 times [2022-11-25 16:51:48,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:51:48,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356247865] [2022-11-25 16:51:48,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:51:48,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:51:48,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:48,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:51:48,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:51:48,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356247865] [2022-11-25 16:51:48,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356247865] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:51:48,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449789262] [2022-11-25 16:51:48,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:51:48,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:51:48,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601bc30a-0ba2-40e5-9a23-b326908818b0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:51:48,849 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601bc30a-0ba2-40e5-9a23-b326908818b0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:51:48,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601bc30a-0ba2-40e5-9a23-b326908818b0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 16:51:49,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:49,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 16:51:49,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:51:49,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:51:49,064 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:51:49,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449789262] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:51:49,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 16:51:49,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-11-25 16:51:49,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302217420] [2022-11-25 16:51:49,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:51:49,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:51:49,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:51:49,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:51:49,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 16:51:49,107 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 627 [2022-11-25 16:51:49,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 43 transitions, 105 flow. Second operand has 4 states, 4 states have (on average 282.75) internal successors, (1131), 4 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states 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 16:51:49,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:51:49,109 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 627 [2022-11-25 16:51:49,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:51:49,373 INFO L130 PetriNetUnfolder]: 293/585 cut-off events. [2022-11-25 16:51:49,374 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 16:51:49,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1186 conditions, 585 events. 293/585 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2514 event pairs, 220 based on Foata normal form. 0/323 useless extension candidates. Maximal degree in co-relation 1177. Up to 292 conditions per place. [2022-11-25 16:51:49,378 INFO L137 encePairwiseOnDemand]: 624/627 looper letters, 77 selfloop transitions, 2 changer transitions 0/80 dead transitions. [2022-11-25 16:51:49,379 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 80 transitions, 341 flow [2022-11-25 16:51:49,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 16:51:49,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 16:51:49,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1208 transitions. [2022-11-25 16:51:49,383 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48165869218500795 [2022-11-25 16:51:49,384 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1208 transitions. [2022-11-25 16:51:49,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1208 transitions. [2022-11-25 16:51:49,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:51:49,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1208 transitions. [2022-11-25 16:51:49,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 302.0) internal successors, (1208), 4 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states 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 16:51:49,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 627.0) internal successors, (3135), 5 states have internal predecessors, (3135), 0 states have call successors, (0), 0 states 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 16:51:49,395 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 627.0) internal successors, (3135), 5 states have internal predecessors, (3135), 0 states have call successors, (0), 0 states 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 16:51:49,395 INFO L175 Difference]: Start difference. First operand has 42 places, 43 transitions, 105 flow. Second operand 4 states and 1208 transitions. [2022-11-25 16:51:49,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 80 transitions, 341 flow [2022-11-25 16:51:49,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 80 transitions, 339 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 16:51:49,398 INFO L231 Difference]: Finished difference. Result has 43 places, 42 transitions, 103 flow [2022-11-25 16:51:49,399 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=627, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=103, PETRI_PLACES=43, PETRI_TRANSITIONS=42} [2022-11-25 16:51:49,401 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -3 predicate places. [2022-11-25 16:51:49,404 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 42 transitions, 103 flow [2022-11-25 16:51:49,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 282.75) internal successors, (1131), 4 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states 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 16:51:49,405 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:51:49,406 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 16:51:49,417 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601bc30a-0ba2-40e5-9a23-b326908818b0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-25 16:51:49,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601bc30a-0ba2-40e5-9a23-b326908818b0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:51:49,612 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-25 16:51:49,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:51:49,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1294609148, now seen corresponding path program 1 times [2022-11-25 16:51:49,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:51:49,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285323835] [2022-11-25 16:51:49,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:51:49,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:51:49,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:49,736 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 16:51:49,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:51:49,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285323835] [2022-11-25 16:51:49,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285323835] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:51:49,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:51:49,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:51:49,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138701057] [2022-11-25 16:51:49,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:51:49,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:51:49,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:51:49,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:51:49,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:51:49,785 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 627 [2022-11-25 16:51:49,786 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 42 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 278.6666666666667) internal successors, (836), 3 states have internal predecessors, (836), 0 states have call successors, (0), 0 states 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 16:51:49,786 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:51:49,787 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 627 [2022-11-25 16:51:49,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:51:49,981 INFO L130 PetriNetUnfolder]: 147/294 cut-off events. [2022-11-25 16:51:49,982 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 16:51:49,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 294 events. 147/294 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 983 event pairs, 110 based on Foata normal form. 1/164 useless extension candidates. Maximal degree in co-relation 592. Up to 293 conditions per place. [2022-11-25 16:51:49,984 INFO L137 encePairwiseOnDemand]: 624/627 looper letters, 39 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2022-11-25 16:51:49,985 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 42 transitions, 185 flow [2022-11-25 16:51:49,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:51:49,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:51:49,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 873 transitions. [2022-11-25 16:51:49,989 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46411483253588515 [2022-11-25 16:51:49,989 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 873 transitions. [2022-11-25 16:51:49,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 873 transitions. [2022-11-25 16:51:49,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:51:49,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 873 transitions. [2022-11-25 16:51:49,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 0 states have call successors, (0), 0 states 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 16:51:49,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 627.0) internal successors, (2508), 4 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states 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 16:51:50,000 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 627.0) internal successors, (2508), 4 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states 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 16:51:50,001 INFO L175 Difference]: Start difference. First operand has 43 places, 42 transitions, 103 flow. Second operand 3 states and 873 transitions. [2022-11-25 16:51:50,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 42 transitions, 185 flow [2022-11-25 16:51:50,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 42 transitions, 180 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-25 16:51:50,006 INFO L231 Difference]: Finished difference. Result has 44 places, 42 transitions, 106 flow [2022-11-25 16:51:50,006 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=627, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=44, PETRI_TRANSITIONS=42} [2022-11-25 16:51:50,010 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -2 predicate places. [2022-11-25 16:51:50,010 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 42 transitions, 106 flow [2022-11-25 16:51:50,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 278.6666666666667) internal successors, (836), 3 states have internal predecessors, (836), 0 states have call successors, (0), 0 states 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 16:51:50,011 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:51:50,011 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 16:51:50,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 16:51:50,012 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-25 16:51:50,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:51:50,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1490584912, now seen corresponding path program 1 times [2022-11-25 16:51:50,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:51:50,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962595084] [2022-11-25 16:51:50,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:51:50,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:51:50,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:50,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 16:51:50,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:51:50,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962595084] [2022-11-25 16:51:50,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962595084] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:51:50,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:51:50,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:51:50,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075570789] [2022-11-25 16:51:50,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:51:50,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:51:50,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:51:50,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:51:50,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:51:50,160 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 627 [2022-11-25 16:51:50,161 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 42 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 278.0) internal successors, (834), 3 states have internal predecessors, (834), 0 states have call successors, (0), 0 states 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 16:51:50,161 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:51:50,162 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 627 [2022-11-25 16:51:50,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:51:50,332 INFO L130 PetriNetUnfolder]: 91/211 cut-off events. [2022-11-25 16:51:50,333 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 16:51:50,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 211 events. 91/211 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 767 event pairs, 22 based on Foata normal form. 1/149 useless extension candidates. Maximal degree in co-relation 428. Up to 106 conditions per place. [2022-11-25 16:51:50,335 INFO L137 encePairwiseOnDemand]: 620/627 looper letters, 62 selfloop transitions, 3 changer transitions 1/67 dead transitions. [2022-11-25 16:51:50,335 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 67 transitions, 288 flow [2022-11-25 16:51:50,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:51:50,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:51:50,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 898 transitions. [2022-11-25 16:51:50,338 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47740563530037217 [2022-11-25 16:51:50,339 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 898 transitions. [2022-11-25 16:51:50,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 898 transitions. [2022-11-25 16:51:50,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:51:50,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 898 transitions. [2022-11-25 16:51:50,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 299.3333333333333) internal successors, (898), 3 states have internal predecessors, (898), 0 states have call successors, (0), 0 states 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 16:51:50,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 627.0) internal successors, (2508), 4 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states 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 16:51:50,348 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 627.0) internal successors, (2508), 4 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states 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 16:51:50,348 INFO L175 Difference]: Start difference. First operand has 44 places, 42 transitions, 106 flow. Second operand 3 states and 898 transitions. [2022-11-25 16:51:50,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 67 transitions, 288 flow [2022-11-25 16:51:50,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 67 transitions, 284 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 16:51:50,354 INFO L231 Difference]: Finished difference. Result has 40 places, 37 transitions, 95 flow [2022-11-25 16:51:50,355 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=627, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=40, PETRI_TRANSITIONS=37} [2022-11-25 16:51:50,357 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -6 predicate places. [2022-11-25 16:51:50,357 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 37 transitions, 95 flow [2022-11-25 16:51:50,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 278.0) internal successors, (834), 3 states have internal predecessors, (834), 0 states have call successors, (0), 0 states 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 16:51:50,358 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:51:50,359 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-25 16:51:50,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 16:51:50,359 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-25 16:51:50,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:51:50,360 INFO L85 PathProgramCache]: Analyzing trace with hash -2066934782, now seen corresponding path program 1 times [2022-11-25 16:51:50,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:51:50,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868720009] [2022-11-25 16:51:50,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:51:50,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:51:50,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:50,497 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 16:51:50,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:51:50,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868720009] [2022-11-25 16:51:50,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868720009] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:51:50,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123492751] [2022-11-25 16:51:50,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:51:50,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:51:50,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601bc30a-0ba2-40e5-9a23-b326908818b0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:51:50,500 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601bc30a-0ba2-40e5-9a23-b326908818b0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:51:50,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601bc30a-0ba2-40e5-9a23-b326908818b0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 16:51:50,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:50,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 16:51:50,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:51:50,693 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 16:51:50,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:51:50,719 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 16:51:50,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123492751] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:51:50,719 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:51:50,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2022-11-25 16:51:50,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643087511] [2022-11-25 16:51:50,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:51:50,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 16:51:50,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:51:50,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 16:51:50,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-11-25 16:51:50,877 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 627 [2022-11-25 16:51:50,880 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 37 transitions, 95 flow. Second operand has 8 states, 8 states have (on average 276.5) internal successors, (2212), 8 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states 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 16:51:50,880 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:51:50,880 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 627 [2022-11-25 16:51:50,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:51:51,118 INFO L130 PetriNetUnfolder]: 91/190 cut-off events. [2022-11-25 16:51:51,118 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2022-11-25 16:51:51,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 442 conditions, 190 events. 91/190 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 536 event pairs, 66 based on Foata normal form. 1/151 useless extension candidates. Maximal degree in co-relation 432. Up to 187 conditions per place. [2022-11-25 16:51:51,119 INFO L137 encePairwiseOnDemand]: 624/627 looper letters, 34 selfloop transitions, 3 changer transitions 0/38 dead transitions. [2022-11-25 16:51:51,119 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 38 transitions, 173 flow [2022-11-25 16:51:51,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 16:51:51,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 16:51:51,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1138 transitions. [2022-11-25 16:51:51,123 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45374800637958534 [2022-11-25 16:51:51,123 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1138 transitions. [2022-11-25 16:51:51,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1138 transitions. [2022-11-25 16:51:51,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:51:51,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1138 transitions. [2022-11-25 16:51:51,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 284.5) internal successors, (1138), 4 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states 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 16:51:51,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 627.0) internal successors, (3135), 5 states have internal predecessors, (3135), 0 states have call successors, (0), 0 states 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 16:51:51,132 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 627.0) internal successors, (3135), 5 states have internal predecessors, (3135), 0 states have call successors, (0), 0 states 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 16:51:51,132 INFO L175 Difference]: Start difference. First operand has 40 places, 37 transitions, 95 flow. Second operand 4 states and 1138 transitions. [2022-11-25 16:51:51,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 38 transitions, 173 flow [2022-11-25 16:51:51,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 38 transitions, 170 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 16:51:51,134 INFO L231 Difference]: Finished difference. Result has 42 places, 38 transitions, 108 flow [2022-11-25 16:51:51,134 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=627, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=108, PETRI_PLACES=42, PETRI_TRANSITIONS=38} [2022-11-25 16:51:51,135 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -4 predicate places. [2022-11-25 16:51:51,135 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 38 transitions, 108 flow [2022-11-25 16:51:51,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 276.5) internal successors, (2212), 8 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states 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 16:51:51,136 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:51:51,136 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-25 16:51:51,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601bc30a-0ba2-40e5-9a23-b326908818b0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 16:51:51,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601bc30a-0ba2-40e5-9a23-b326908818b0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:51:51,342 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-25 16:51:51,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:51:51,343 INFO L85 PathProgramCache]: Analyzing trace with hash -613504722, now seen corresponding path program 2 times [2022-11-25 16:51:51,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:51:51,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455632334] [2022-11-25 16:51:51,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:51:51,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:51:51,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 16:51:51,399 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 16:51:51,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 16:51:51,443 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 16:51:51,445 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 16:51:51,446 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-11-25 16:51:51,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-11-25 16:51:51,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-11-25 16:51:51,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-11-25 16:51:51,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-11-25 16:51:51,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-11-25 16:51:51,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-11-25 16:51:51,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-11-25 16:51:51,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-11-25 16:51:51,451 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-11-25 16:51:51,451 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-11-25 16:51:51,451 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-11-25 16:51:51,451 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-11-25 16:51:51,453 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-11-25 16:51:51,454 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-11-25 16:51:51,454 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-11-25 16:51:51,454 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-11-25 16:51:51,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-11-25 16:51:51,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-11-25 16:51:51,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-11-25 16:51:51,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-11-25 16:51:51,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 16:51:51,457 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2022-11-25 16:51:51,460 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 16:51:51,460 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-25 16:51:51,560 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-25 16:51:51,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 476 places, 501 transitions, 1020 flow [2022-11-25 16:51:51,724 INFO L130 PetriNetUnfolder]: 36/566 cut-off events. [2022-11-25 16:51:51,725 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 16:51:51,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 580 conditions, 566 events. 36/566 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1811 event pairs, 0 based on Foata normal form. 0/500 useless extension candidates. Maximal degree in co-relation 420. Up to 8 conditions per place. [2022-11-25 16:51:51,736 INFO L82 GeneralOperation]: Start removeDead. Operand has 476 places, 501 transitions, 1020 flow [2022-11-25 16:51:51,744 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 476 places, 501 transitions, 1020 flow [2022-11-25 16:51:51,744 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 16:51:51,744 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 476 places, 501 transitions, 1020 flow [2022-11-25 16:51:51,745 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 476 places, 501 transitions, 1020 flow [2022-11-25 16:51:51,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 476 places, 501 transitions, 1020 flow [2022-11-25 16:51:51,933 INFO L130 PetriNetUnfolder]: 36/566 cut-off events. [2022-11-25 16:51:51,933 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 16:51:51,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 580 conditions, 566 events. 36/566 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1811 event pairs, 0 based on Foata normal form. 0/500 useless extension candidates. Maximal degree in co-relation 420. Up to 8 conditions per place. [2022-11-25 16:51:51,985 INFO L119 LiptonReduction]: Number of co-enabled transitions 97524 [2022-11-25 16:52:10,085 INFO L134 LiptonReduction]: Checked pairs total: 100455 [2022-11-25 16:52:10,085 INFO L136 LiptonReduction]: Total number of compositions: 499 [2022-11-25 16:52:10,092 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 16:52:10,093 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;@2eb9ae2c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 16:52:10,093 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-25 16:52:10,095 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-11-25 16:52:10,095 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 16:52:10,096 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:52:10,096 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 16:52:10,096 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-25 16:52:10,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:52:10,097 INFO L85 PathProgramCache]: Analyzing trace with hash 80585, now seen corresponding path program 1 times [2022-11-25 16:52:10,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:52:10,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590600557] [2022-11-25 16:52:10,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:52:10,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:52:10,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:10,184 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 16:52:10,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:52:10,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590600557] [2022-11-25 16:52:10,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590600557] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:52:10,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:52:10,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 16:52:10,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021157764] [2022-11-25 16:52:10,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:52:10,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:52:10,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:52:10,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:52:10,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:52:10,215 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 454 out of 1000 [2022-11-25 16:52:10,217 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 100 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 454.6666666666667) internal successors, (1364), 3 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states 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 16:52:10,217 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:52:10,217 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 454 of 1000 [2022-11-25 16:52:10,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:52:13,327 INFO L130 PetriNetUnfolder]: 14527/21297 cut-off events. [2022-11-25 16:52:13,328 INFO L131 PetriNetUnfolder]: For 237/237 co-relation queries the response was YES. [2022-11-25 16:52:13,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42683 conditions, 21297 events. 14527/21297 cut-off events. For 237/237 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 129178 event pairs, 11718 based on Foata normal form. 0/13328 useless extension candidates. Maximal degree in co-relation 35395. Up to 21228 conditions per place. [2022-11-25 16:52:13,476 INFO L137 encePairwiseOnDemand]: 986/1000 looper letters, 82 selfloop transitions, 1 changer transitions 0/87 dead transitions. [2022-11-25 16:52:13,477 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 87 transitions, 358 flow [2022-11-25 16:52:13,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:52:13,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:52:13,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1458 transitions. [2022-11-25 16:52:13,482 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.486 [2022-11-25 16:52:13,482 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1458 transitions. [2022-11-25 16:52:13,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1458 transitions. [2022-11-25 16:52:13,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:52:13,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1458 transitions. [2022-11-25 16:52:13,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 486.0) internal successors, (1458), 3 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:52:13,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1000.0) internal successors, (4000), 4 states have internal predecessors, (4000), 0 states have call successors, (0), 0 states 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 16:52:13,494 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1000.0) internal successors, (4000), 4 states have internal predecessors, (4000), 0 states have call successors, (0), 0 states 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 16:52:13,495 INFO L175 Difference]: Start difference. First operand has 84 places, 100 transitions, 218 flow. Second operand 3 states and 1458 transitions. [2022-11-25 16:52:13,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 87 transitions, 358 flow [2022-11-25 16:52:13,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 87 transitions, 358 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 16:52:13,499 INFO L231 Difference]: Finished difference. Result has 79 places, 87 transitions, 194 flow [2022-11-25 16:52:13,500 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1000, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=79, PETRI_TRANSITIONS=87} [2022-11-25 16:52:13,502 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, -5 predicate places. [2022-11-25 16:52:13,502 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 87 transitions, 194 flow [2022-11-25 16:52:13,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 454.6666666666667) internal successors, (1364), 3 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states 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 16:52:13,503 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:52:13,504 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 16:52:13,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 16:52:13,504 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-25 16:52:13,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:52:13,506 INFO L85 PathProgramCache]: Analyzing trace with hash 81413, now seen corresponding path program 1 times [2022-11-25 16:52:13,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:52:13,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606499166] [2022-11-25 16:52:13,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:52:13,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:52:13,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:13,563 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 16:52:13,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:52:13,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606499166] [2022-11-25 16:52:13,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606499166] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:52:13,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:52:13,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 16:52:13,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324727503] [2022-11-25 16:52:13,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:52:13,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:52:13,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:52:13,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:52:13,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:52:13,586 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 454 out of 1000 [2022-11-25 16:52:13,588 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 87 transitions, 194 flow. Second operand has 3 states, 3 states have (on average 454.6666666666667) internal successors, (1364), 3 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states 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 16:52:13,588 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:52:13,588 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 454 of 1000 [2022-11-25 16:52:13,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:52:18,731 INFO L130 PetriNetUnfolder]: 29053/42592 cut-off events. [2022-11-25 16:52:18,731 INFO L131 PetriNetUnfolder]: For 474/474 co-relation queries the response was YES. [2022-11-25 16:52:18,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85360 conditions, 42592 events. 29053/42592 cut-off events. For 474/474 co-relation queries the response was YES. Maximal size of possible extension queue 1261. Compared 285958 event pairs, 23436 based on Foata normal form. 0/26657 useless extension candidates. Maximal degree in co-relation 85352. Up to 21229 conditions per place. [2022-11-25 16:52:18,971 INFO L137 encePairwiseOnDemand]: 997/1000 looper letters, 162 selfloop transitions, 2 changer transitions 0/168 dead transitions. [2022-11-25 16:52:18,972 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 168 transitions, 698 flow [2022-11-25 16:52:18,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:52:18,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:52:18,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1527 transitions. [2022-11-25 16:52:18,978 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.509 [2022-11-25 16:52:18,978 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1527 transitions. [2022-11-25 16:52:18,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1527 transitions. [2022-11-25 16:52:18,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:52:18,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1527 transitions. [2022-11-25 16:52:18,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 509.0) internal successors, (1527), 3 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:52:18,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1000.0) internal successors, (4000), 4 states have internal predecessors, (4000), 0 states have call successors, (0), 0 states 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 16:52:18,993 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1000.0) internal successors, (4000), 4 states have internal predecessors, (4000), 0 states have call successors, (0), 0 states 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 16:52:18,993 INFO L175 Difference]: Start difference. First operand has 79 places, 87 transitions, 194 flow. Second operand 3 states and 1527 transitions. [2022-11-25 16:52:18,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 168 transitions, 698 flow [2022-11-25 16:52:19,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 168 transitions, 697 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 16:52:19,005 INFO L231 Difference]: Finished difference. Result has 81 places, 88 transitions, 205 flow [2022-11-25 16:52:19,005 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1000, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=205, PETRI_PLACES=81, PETRI_TRANSITIONS=88} [2022-11-25 16:52:19,007 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, -3 predicate places. [2022-11-25 16:52:19,007 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 88 transitions, 205 flow [2022-11-25 16:52:19,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 454.6666666666667) internal successors, (1364), 3 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states 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 16:52:19,008 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:52:19,008 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 16:52:19,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 16:52:19,009 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-25 16:52:19,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:52:19,010 INFO L85 PathProgramCache]: Analyzing trace with hash 2530475, now seen corresponding path program 1 times [2022-11-25 16:52:19,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:52:19,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588004950] [2022-11-25 16:52:19,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:52:19,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:52:19,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:19,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:52:19,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:52:19,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588004950] [2022-11-25 16:52:19,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588004950] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:52:19,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996911148] [2022-11-25 16:52:19,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:52:19,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:52:19,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601bc30a-0ba2-40e5-9a23-b326908818b0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:52:19,099 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601bc30a-0ba2-40e5-9a23-b326908818b0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:52:19,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601bc30a-0ba2-40e5-9a23-b326908818b0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 16:52:19,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:19,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 16:52:19,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:52:19,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:52:19,269 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:52:19,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996911148] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:52:19,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 16:52:19,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-11-25 16:52:19,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736561677] [2022-11-25 16:52:19,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:52:19,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:52:19,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:52:19,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:52:19,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 16:52:19,301 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 454 out of 1000 [2022-11-25 16:52:19,304 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 88 transitions, 205 flow. Second operand has 4 states, 4 states have (on average 454.75) internal successors, (1819), 4 states have internal predecessors, (1819), 0 states have call successors, (0), 0 states 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 16:52:19,304 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:52:19,304 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 454 of 1000 [2022-11-25 16:52:19,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:52:24,025 INFO L130 PetriNetUnfolder]: 29053/42591 cut-off events. [2022-11-25 16:52:24,025 INFO L131 PetriNetUnfolder]: For 474/474 co-relation queries the response was YES. [2022-11-25 16:52:24,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85363 conditions, 42591 events. 29053/42591 cut-off events. For 474/474 co-relation queries the response was YES. Maximal size of possible extension queue 1262. Compared 286351 event pairs, 23436 based on Foata normal form. 0/26659 useless extension candidates. Maximal degree in co-relation 85353. Up to 21227 conditions per place. [2022-11-25 16:52:24,244 INFO L137 encePairwiseOnDemand]: 997/1000 looper letters, 161 selfloop transitions, 2 changer transitions 0/167 dead transitions. [2022-11-25 16:52:24,244 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 167 transitions, 701 flow [2022-11-25 16:52:24,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 16:52:24,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 16:52:24,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1980 transitions. [2022-11-25 16:52:24,251 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.495 [2022-11-25 16:52:24,251 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1980 transitions. [2022-11-25 16:52:24,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1980 transitions. [2022-11-25 16:52:24,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:52:24,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1980 transitions. [2022-11-25 16:52:24,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 495.0) internal successors, (1980), 4 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states 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 16:52:24,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1000.0) internal successors, (5000), 5 states have internal predecessors, (5000), 0 states have call successors, (0), 0 states 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 16:52:24,268 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1000.0) internal successors, (5000), 5 states have internal predecessors, (5000), 0 states have call successors, (0), 0 states 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 16:52:24,269 INFO L175 Difference]: Start difference. First operand has 81 places, 88 transitions, 205 flow. Second operand 4 states and 1980 transitions. [2022-11-25 16:52:24,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 167 transitions, 701 flow [2022-11-25 16:52:24,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 167 transitions, 699 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 16:52:24,273 INFO L231 Difference]: Finished difference. Result has 82 places, 87 transitions, 203 flow [2022-11-25 16:52:24,274 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1000, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=203, PETRI_PLACES=82, PETRI_TRANSITIONS=87} [2022-11-25 16:52:24,274 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, -2 predicate places. [2022-11-25 16:52:24,274 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 87 transitions, 203 flow [2022-11-25 16:52:24,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 454.75) internal successors, (1819), 4 states have internal predecessors, (1819), 0 states have call successors, (0), 0 states 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 16:52:24,276 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:52:24,276 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 16:52:24,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601bc30a-0ba2-40e5-9a23-b326908818b0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 16:52:24,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601bc30a-0ba2-40e5-9a23-b326908818b0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-25 16:52:24,486 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-25 16:52:24,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:52:24,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1920288266, now seen corresponding path program 1 times [2022-11-25 16:52:24,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:52:24,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545236506] [2022-11-25 16:52:24,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:52:24,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:52:24,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:24,577 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 16:52:24,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:52:24,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545236506] [2022-11-25 16:52:24,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545236506] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:52:24,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:52:24,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:52:24,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890900428] [2022-11-25 16:52:24,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:52:24,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:52:24,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:52:24,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:52:24,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:52:24,626 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 449 out of 1000 [2022-11-25 16:52:24,636 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 87 transitions, 203 flow. Second operand has 3 states, 3 states have (on average 450.6666666666667) internal successors, (1352), 3 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states 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 16:52:24,636 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:52:24,637 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 449 of 1000 [2022-11-25 16:52:24,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:52:27,064 INFO L130 PetriNetUnfolder]: 14527/21297 cut-off events. [2022-11-25 16:52:27,065 INFO L131 PetriNetUnfolder]: For 237/237 co-relation queries the response was YES. [2022-11-25 16:52:27,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42691 conditions, 21297 events. 14527/21297 cut-off events. For 237/237 co-relation queries the response was YES. Maximal size of possible extension queue 643. Compared 129244 event pairs, 11718 based on Foata normal form. 1/13331 useless extension candidates. Maximal degree in co-relation 42680. Up to 21228 conditions per place. [2022-11-25 16:52:27,162 INFO L137 encePairwiseOnDemand]: 997/1000 looper letters, 81 selfloop transitions, 2 changer transitions 0/87 dead transitions. [2022-11-25 16:52:27,162 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 87 transitions, 369 flow [2022-11-25 16:52:27,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:52:27,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:52:27,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1431 transitions. [2022-11-25 16:52:27,167 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.477 [2022-11-25 16:52:27,167 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1431 transitions. [2022-11-25 16:52:27,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1431 transitions. [2022-11-25 16:52:27,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:52:27,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1431 transitions. [2022-11-25 16:52:27,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 477.0) internal successors, (1431), 3 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states 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 16:52:27,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1000.0) internal successors, (4000), 4 states have internal predecessors, (4000), 0 states have call successors, (0), 0 states 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 16:52:27,180 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1000.0) internal successors, (4000), 4 states have internal predecessors, (4000), 0 states have call successors, (0), 0 states 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 16:52:27,180 INFO L175 Difference]: Start difference. First operand has 82 places, 87 transitions, 203 flow. Second operand 3 states and 1431 transitions. [2022-11-25 16:52:27,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 87 transitions, 369 flow [2022-11-25 16:52:27,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 87 transitions, 364 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-25 16:52:27,184 INFO L231 Difference]: Finished difference. Result has 83 places, 87 transitions, 206 flow [2022-11-25 16:52:27,185 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1000, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=206, PETRI_PLACES=83, PETRI_TRANSITIONS=87} [2022-11-25 16:52:27,186 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, -1 predicate places. [2022-11-25 16:52:27,186 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 87 transitions, 206 flow [2022-11-25 16:52:27,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 450.6666666666667) internal successors, (1352), 3 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states 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 16:52:27,187 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:52:27,187 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:52:27,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 16:52:27,187 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-25 16:52:27,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:52:27,188 INFO L85 PathProgramCache]: Analyzing trace with hash 687101340, now seen corresponding path program 1 times [2022-11-25 16:52:27,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:52:27,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290624961] [2022-11-25 16:52:27,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:52:27,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:52:27,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:27,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 16:52:27,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:52:27,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290624961] [2022-11-25 16:52:27,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290624961] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:52:27,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:52:27,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:52:27,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140238429] [2022-11-25 16:52:27,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:52:27,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:52:27,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:52:27,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:52:27,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:52:27,316 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 448 out of 1000 [2022-11-25 16:52:27,318 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 87 transitions, 206 flow. Second operand has 3 states, 3 states have (on average 450.0) internal successors, (1350), 3 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states 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 16:52:27,318 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:52:27,318 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 448 of 1000 [2022-11-25 16:52:27,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:52:29,508 INFO L130 PetriNetUnfolder]: 12585/18558 cut-off events. [2022-11-25 16:52:29,508 INFO L131 PetriNetUnfolder]: For 161/161 co-relation queries the response was YES. [2022-11-25 16:52:29,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37222 conditions, 18558 events. 12585/18558 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 115790 event pairs, 4698 based on Foata normal form. 0/12069 useless extension candidates. Maximal degree in co-relation 37210. Up to 12904 conditions per place. [2022-11-25 16:52:29,613 INFO L137 encePairwiseOnDemand]: 991/1000 looper letters, 151 selfloop transitions, 4 changer transitions 1/159 dead transitions. [2022-11-25 16:52:29,613 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 159 transitions, 668 flow [2022-11-25 16:52:29,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:52:29,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:52:29,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1505 transitions. [2022-11-25 16:52:29,620 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5016666666666667 [2022-11-25 16:52:29,620 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1505 transitions. [2022-11-25 16:52:29,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1505 transitions. [2022-11-25 16:52:29,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:52:29,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1505 transitions. [2022-11-25 16:52:29,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 501.6666666666667) internal successors, (1505), 3 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states 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 16:52:29,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1000.0) internal successors, (4000), 4 states have internal predecessors, (4000), 0 states have call successors, (0), 0 states 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 16:52:29,636 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1000.0) internal successors, (4000), 4 states have internal predecessors, (4000), 0 states have call successors, (0), 0 states 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 16:52:29,636 INFO L175 Difference]: Start difference. First operand has 83 places, 87 transitions, 206 flow. Second operand 3 states and 1505 transitions. [2022-11-25 16:52:29,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 159 transitions, 668 flow [2022-11-25 16:52:29,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 159 transitions, 664 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 16:52:29,641 INFO L231 Difference]: Finished difference. Result has 84 places, 88 transitions, 228 flow [2022-11-25 16:52:29,641 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1000, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=228, PETRI_PLACES=84, PETRI_TRANSITIONS=88} [2022-11-25 16:52:29,642 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, 0 predicate places. [2022-11-25 16:52:29,643 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 88 transitions, 228 flow [2022-11-25 16:52:29,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 450.0) internal successors, (1350), 3 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states 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 16:52:29,643 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:52:29,644 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:52:29,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 16:52:29,644 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-25 16:52:29,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:52:29,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1368684625, now seen corresponding path program 1 times [2022-11-25 16:52:29,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:52:29,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203609422] [2022-11-25 16:52:29,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:52:29,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:52:29,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:29,736 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 16:52:29,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:52:29,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203609422] [2022-11-25 16:52:29,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203609422] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:52:29,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:52:29,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:52:29,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995238375] [2022-11-25 16:52:29,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:52:29,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:52:29,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:52:29,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:52:29,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:52:29,786 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 446 out of 1000 [2022-11-25 16:52:29,788 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 88 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 449.0) internal successors, (1347), 3 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states 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 16:52:29,788 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:52:29,788 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 446 of 1000 [2022-11-25 16:52:29,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:52:31,792 INFO L130 PetriNetUnfolder]: 10736/15854 cut-off events. [2022-11-25 16:52:31,792 INFO L131 PetriNetUnfolder]: For 1111/1111 co-relation queries the response was YES. [2022-11-25 16:52:31,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34446 conditions, 15854 events. 10736/15854 cut-off events. For 1111/1111 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 90497 event pairs, 6994 based on Foata normal form. 0/11579 useless extension candidates. Maximal degree in co-relation 34434. Up to 12872 conditions per place. [2022-11-25 16:52:31,854 INFO L137 encePairwiseOnDemand]: 992/1000 looper letters, 144 selfloop transitions, 7 changer transitions 0/154 dead transitions. [2022-11-25 16:52:31,854 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 154 transitions, 658 flow [2022-11-25 16:52:31,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:52:31,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:52:31,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1489 transitions. [2022-11-25 16:52:31,859 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49633333333333335 [2022-11-25 16:52:31,860 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1489 transitions. [2022-11-25 16:52:31,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1489 transitions. [2022-11-25 16:52:31,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:52:31,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1489 transitions. [2022-11-25 16:52:31,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 496.3333333333333) internal successors, (1489), 3 states have internal predecessors, (1489), 0 states have call successors, (0), 0 states 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 16:52:31,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1000.0) internal successors, (4000), 4 states have internal predecessors, (4000), 0 states have call successors, (0), 0 states 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 16:52:31,873 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1000.0) internal successors, (4000), 4 states have internal predecessors, (4000), 0 states have call successors, (0), 0 states 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 16:52:31,873 INFO L175 Difference]: Start difference. First operand has 84 places, 88 transitions, 228 flow. Second operand 3 states and 1489 transitions. [2022-11-25 16:52:31,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 154 transitions, 658 flow [2022-11-25 16:52:32,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 154 transitions, 654 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 16:52:32,031 INFO L231 Difference]: Finished difference. Result has 84 places, 88 transitions, 245 flow [2022-11-25 16:52:32,031 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1000, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=245, PETRI_PLACES=84, PETRI_TRANSITIONS=88} [2022-11-25 16:52:32,032 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, 0 predicate places. [2022-11-25 16:52:32,032 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 88 transitions, 245 flow [2022-11-25 16:52:32,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 449.0) internal successors, (1347), 3 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states 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 16:52:32,033 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:52:32,033 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:52:32,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 16:52:32,033 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-25 16:52:32,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:52:32,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1368684363, now seen corresponding path program 1 times [2022-11-25 16:52:32,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:52:32,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315089290] [2022-11-25 16:52:32,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:52:32,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:52:32,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:32,130 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 16:52:32,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:52:32,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315089290] [2022-11-25 16:52:32,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315089290] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:52:32,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759563416] [2022-11-25 16:52:32,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:52:32,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:52:32,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601bc30a-0ba2-40e5-9a23-b326908818b0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:52:32,133 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601bc30a-0ba2-40e5-9a23-b326908818b0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:52:32,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601bc30a-0ba2-40e5-9a23-b326908818b0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 16:52:32,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:32,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 16:52:32,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:52:32,360 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 16:52:32,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:52:32,388 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 16:52:32,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759563416] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:52:32,389 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:52:32,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 8 [2022-11-25 16:52:32,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630586593] [2022-11-25 16:52:32,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:52:32,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 16:52:32,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:52:32,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 16:52:32,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-25 16:52:32,697 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 1000 [2022-11-25 16:52:32,700 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 88 transitions, 245 flow. Second operand has 8 states, 8 states have (on average 437.5) internal successors, (3500), 8 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states 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 16:52:32,700 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:52:32,700 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 1000 [2022-11-25 16:52:32,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:52:34,493 INFO L130 PetriNetUnfolder]: 8888/13292 cut-off events. [2022-11-25 16:52:34,493 INFO L131 PetriNetUnfolder]: For 10027/10027 co-relation queries the response was YES. [2022-11-25 16:52:34,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33475 conditions, 13292 events. 8888/13292 cut-off events. For 10027/10027 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 78317 event pairs, 3186 based on Foata normal form. 786/11148 useless extension candidates. Maximal degree in co-relation 33463. Up to 7633 conditions per place. [2022-11-25 16:52:34,556 INFO L137 encePairwiseOnDemand]: 992/1000 looper letters, 143 selfloop transitions, 7 changer transitions 2/155 dead transitions. [2022-11-25 16:52:34,556 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 155 transitions, 687 flow [2022-11-25 16:52:34,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 16:52:34,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 16:52:34,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2765 transitions. [2022-11-25 16:52:34,565 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4608333333333333 [2022-11-25 16:52:34,566 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2765 transitions. [2022-11-25 16:52:34,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2765 transitions. [2022-11-25 16:52:34,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:52:34,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2765 transitions. [2022-11-25 16:52:34,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 460.8333333333333) internal successors, (2765), 6 states have internal predecessors, (2765), 0 states have call successors, (0), 0 states 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 16:52:34,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1000.0) internal successors, (7000), 7 states have internal predecessors, (7000), 0 states have call successors, (0), 0 states 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 16:52:34,588 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1000.0) internal successors, (7000), 7 states have internal predecessors, (7000), 0 states have call successors, (0), 0 states 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 16:52:34,588 INFO L175 Difference]: Start difference. First operand has 84 places, 88 transitions, 245 flow. Second operand 6 states and 2765 transitions. [2022-11-25 16:52:34,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 155 transitions, 687 flow [2022-11-25 16:52:34,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 155 transitions, 680 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 16:52:34,595 INFO L231 Difference]: Finished difference. Result has 87 places, 87 transitions, 252 flow [2022-11-25 16:52:34,595 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1000, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=252, PETRI_PLACES=87, PETRI_TRANSITIONS=87} [2022-11-25 16:52:34,596 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, 3 predicate places. [2022-11-25 16:52:34,596 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 87 transitions, 252 flow [2022-11-25 16:52:34,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 437.5) internal successors, (3500), 8 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states 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 16:52:34,598 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:52:34,598 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-25 16:52:34,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601bc30a-0ba2-40e5-9a23-b326908818b0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 16:52:34,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_601bc30a-0ba2-40e5-9a23-b326908818b0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-25 16:52:34,805 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-25 16:52:34,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:52:34,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1560283107, now seen corresponding path program 1 times [2022-11-25 16:52:34,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:52:34,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592537112] [2022-11-25 16:52:34,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:52:34,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:52:34,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 16:52:34,836 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 16:52:34,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 16:52:34,868 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 16:52:34,868 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 16:52:34,868 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2022-11-25 16:52:34,869 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2022-11-25 16:52:34,869 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2022-11-25 16:52:34,869 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2022-11-25 16:52:34,869 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2022-11-25 16:52:34,869 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2022-11-25 16:52:34,870 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2022-11-25 16:52:34,870 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2022-11-25 16:52:34,870 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2022-11-25 16:52:34,870 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2022-11-25 16:52:34,870 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2022-11-25 16:52:34,871 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2022-11-25 16:52:34,871 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2022-11-25 16:52:34,871 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2022-11-25 16:52:34,871 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 25 remaining) [2022-11-25 16:52:34,872 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 25 remaining) [2022-11-25 16:52:34,872 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 25 remaining) [2022-11-25 16:52:34,872 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2022-11-25 16:52:34,872 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2022-11-25 16:52:34,872 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2022-11-25 16:52:34,873 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2022-11-25 16:52:34,873 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2022-11-25 16:52:34,873 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2022-11-25 16:52:34,873 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2022-11-25 16:52:34,873 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2022-11-25 16:52:34,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 16:52:34,874 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:52:34,875 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 16:52:34,875 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-25 16:52:34,953 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-25 16:52:34,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 656 places, 692 transitions, 1414 flow [2022-11-25 16:52:35,269 INFO L130 PetriNetUnfolder]: 58/844 cut-off events. [2022-11-25 16:52:35,269 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-25 16:52:35,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 872 conditions, 844 events. 58/844 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3670 event pairs, 1 based on Foata normal form. 0/742 useless extension candidates. Maximal degree in co-relation 647. Up to 16 conditions per place. [2022-11-25 16:52:35,301 INFO L82 GeneralOperation]: Start removeDead. Operand has 656 places, 692 transitions, 1414 flow [2022-11-25 16:52:35,313 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 656 places, 692 transitions, 1414 flow [2022-11-25 16:52:35,314 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 16:52:35,314 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 656 places, 692 transitions, 1414 flow [2022-11-25 16:52:35,314 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 656 places, 692 transitions, 1414 flow [2022-11-25 16:52:35,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 656 places, 692 transitions, 1414 flow [2022-11-25 16:52:35,611 INFO L130 PetriNetUnfolder]: 58/844 cut-off events. [2022-11-25 16:52:35,612 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-25 16:52:35,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 872 conditions, 844 events. 58/844 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3670 event pairs, 1 based on Foata normal form. 0/742 useless extension candidates. Maximal degree in co-relation 647. Up to 16 conditions per place. [2022-11-25 16:52:35,748 INFO L119 LiptonReduction]: Number of co-enabled transitions 255150 [2022-11-25 16:53:32,080 INFO L134 LiptonReduction]: Checked pairs total: 272873 [2022-11-25 16:53:32,080 INFO L136 LiptonReduction]: Total number of compositions: 683 [2022-11-25 16:53:32,083 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 16:53:32,083 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;@2eb9ae2c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 16:53:32,084 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2022-11-25 16:53:32,086 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-11-25 16:53:32,086 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 16:53:32,087 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:53:32,087 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 16:53:32,087 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-25 16:53:32,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:53:32,088 INFO L85 PathProgramCache]: Analyzing trace with hash 130322, now seen corresponding path program 1 times [2022-11-25 16:53:32,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:53:32,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623279299] [2022-11-25 16:53:32,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:53:32,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:53:32,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:53:32,156 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 16:53:32,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:53:32,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623279299] [2022-11-25 16:53:32,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623279299] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:53:32,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:53:32,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 16:53:32,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864514584] [2022-11-25 16:53:32,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:53:32,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:53:32,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:53:32,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:53:32,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:53:32,216 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 626 out of 1375 [2022-11-25 16:53:32,219 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 138 transitions, 306 flow. Second operand has 3 states, 3 states have (on average 626.6666666666666) internal successors, (1880), 3 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states 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 16:53:32,219 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:53:32,219 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 626 of 1375 [2022-11-25 16:53:32,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand