./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 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_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8 --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 306d85d0b5300749928a8392783cd7ec5acf0c4622b6bdba80c3589786dd98ad --- 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-2329fc7 [2022-12-13 22:08:51,206 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 22:08:51,208 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 22:08:51,220 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 22:08:51,221 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 22:08:51,221 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 22:08:51,222 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 22:08:51,223 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 22:08:51,224 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 22:08:51,225 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 22:08:51,225 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 22:08:51,226 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 22:08:51,226 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 22:08:51,227 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 22:08:51,228 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 22:08:51,229 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 22:08:51,229 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 22:08:51,230 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 22:08:51,231 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 22:08:51,232 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 22:08:51,233 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 22:08:51,234 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 22:08:51,236 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 22:08:51,236 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 22:08:51,240 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 22:08:51,240 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 22:08:51,240 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 22:08:51,241 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 22:08:51,241 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 22:08:51,242 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 22:08:51,243 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 22:08:51,243 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 22:08:51,244 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 22:08:51,245 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 22:08:51,246 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 22:08:51,246 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 22:08:51,247 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 22:08:51,247 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 22:08:51,247 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 22:08:51,248 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 22:08:51,248 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 22:08:51,249 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 22:08:51,269 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 22:08:51,269 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 22:08:51,269 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 22:08:51,269 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 22:08:51,270 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 22:08:51,270 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 22:08:51,270 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 22:08:51,271 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 22:08:51,271 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 22:08:51,271 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 22:08:51,271 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 22:08:51,271 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 22:08:51,271 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 22:08:51,272 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 22:08:51,272 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 22:08:51,272 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 22:08:51,272 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 22:08:51,272 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 22:08:51,272 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 22:08:51,272 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 22:08:51,273 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 22:08:51,273 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 22:08:51,273 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 22:08:51,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 22:08:51,273 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 22:08:51,273 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 22:08:51,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:08:51,274 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 22:08:51,274 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 22:08:51,274 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 22:08:51,274 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 22:08:51,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 22:08:51,274 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 22:08:51,275 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 22:08:51,275 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 22:08:51,275 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 22:08:51,275 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 22:08:51,275 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_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 306d85d0b5300749928a8392783cd7ec5acf0c4622b6bdba80c3589786dd98ad [2022-12-13 22:08:51,444 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 22:08:51,462 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 22:08:51,464 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 22:08:51,465 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 22:08:51,465 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 22:08:51,466 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c [2022-12-13 22:08:54,036 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 22:08:54,189 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 22:08:54,190 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c [2022-12-13 22:08:54,194 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/data/067640b55/ea91db4dfa124098a37cf5beed9fca5f/FLAG5d30cca1d [2022-12-13 22:08:54,610 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/data/067640b55/ea91db4dfa124098a37cf5beed9fca5f [2022-12-13 22:08:54,612 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 22:08:54,613 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 22:08:54,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 22:08:54,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 22:08:54,617 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 22:08:54,617 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:08:54" (1/1) ... [2022-12-13 22:08:54,618 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32cddb8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:08:54, skipping insertion in model container [2022-12-13 22:08:54,618 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:08:54" (1/1) ... [2022-12-13 22:08:54,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 22:08:54,640 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 22:08:54,748 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:08:54,750 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:08:54,751 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:08:54,751 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:08:54,752 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:08:54,753 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:08:54,761 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_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c[2823,2836] [2022-12-13 22:08:54,768 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:08:54,775 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 22:08:54,785 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:08:54,786 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:08:54,787 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:08:54,787 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:08:54,787 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:08:54,788 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:08:54,793 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_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c[2823,2836] [2022-12-13 22:08:54,796 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:08:54,806 INFO L208 MainTranslator]: Completed translation [2022-12-13 22:08:54,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:08:54 WrapperNode [2022-12-13 22:08:54,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 22:08:54,807 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 22:08:54,807 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 22:08:54,807 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 22:08:54,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:08:54" (1/1) ... [2022-12-13 22:08:54,818 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:08:54" (1/1) ... [2022-12-13 22:08:54,838 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 284 [2022-12-13 22:08:54,839 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 22:08:54,839 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 22:08:54,839 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 22:08:54,839 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 22:08:54,846 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:08:54" (1/1) ... [2022-12-13 22:08:54,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:08:54" (1/1) ... [2022-12-13 22:08:54,849 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:08:54" (1/1) ... [2022-12-13 22:08:54,849 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:08:54" (1/1) ... [2022-12-13 22:08:54,855 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:08:54" (1/1) ... [2022-12-13 22:08:54,858 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:08:54" (1/1) ... [2022-12-13 22:08:54,860 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:08:54" (1/1) ... [2022-12-13 22:08:54,861 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:08:54" (1/1) ... [2022-12-13 22:08:54,863 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 22:08:54,863 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 22:08:54,863 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 22:08:54,864 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 22:08:54,864 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:08:54" (1/1) ... [2022-12-13 22:08:54,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:08:54,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:08:54,887 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 22:08:54,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 22:08:54,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 22:08:54,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 22:08:54,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 22:08:54,917 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 22:08:54,917 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 22:08:54,917 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 22:08:54,917 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 22:08:54,917 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 22:08:54,917 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 22:08:54,917 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 22:08:54,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 22:08:54,917 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 22:08:54,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 22:08:54,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 22:08:54,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 22:08:54,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 22:08:54,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 22:08:54,919 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 22:08:54,999 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 22:08:55,001 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 22:08:55,417 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 22:08:55,628 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 22:08:55,628 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-13 22:08:55,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:08:55 BoogieIcfgContainer [2022-12-13 22:08:55,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 22:08:55,633 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 22:08:55,634 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 22:08:55,636 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 22:08:55,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 10:08:54" (1/3) ... [2022-12-13 22:08:55,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ffec1f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:08:55, skipping insertion in model container [2022-12-13 22:08:55,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:08:54" (2/3) ... [2022-12-13 22:08:55,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ffec1f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:08:55, skipping insertion in model container [2022-12-13 22:08:55,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:08:55" (3/3) ... [2022-12-13 22:08:55,639 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-max.wvr.c [2022-12-13 22:08:55,646 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 22:08:55,653 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 22:08:55,654 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-12-13 22:08:55,654 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 22:08:55,740 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 22:08:55,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 369 places, 390 transitions, 804 flow [2022-12-13 22:08:55,856 INFO L130 PetriNetUnfolder]: 31/387 cut-off events. [2022-12-13 22:08:55,856 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 22:08:55,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 400 conditions, 387 events. 31/387 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 407 event pairs, 0 based on Foata normal form. 0/324 useless extension candidates. Maximal degree in co-relation 294. Up to 3 conditions per place. [2022-12-13 22:08:55,863 INFO L82 GeneralOperation]: Start removeDead. Operand has 369 places, 390 transitions, 804 flow [2022-12-13 22:08:55,868 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 342 places, 362 transitions, 742 flow [2022-12-13 22:08:55,871 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 22:08:55,878 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 342 places, 362 transitions, 742 flow [2022-12-13 22:08:55,880 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 342 places, 362 transitions, 742 flow [2022-12-13 22:08:55,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 342 places, 362 transitions, 742 flow [2022-12-13 22:08:55,920 INFO L130 PetriNetUnfolder]: 30/362 cut-off events. [2022-12-13 22:08:55,920 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 22:08:55,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375 conditions, 362 events. 30/362 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 405 event pairs, 0 based on Foata normal form. 0/301 useless extension candidates. Maximal degree in co-relation 294. Up to 3 conditions per place. [2022-12-13 22:08:55,923 INFO L119 LiptonReduction]: Number of co-enabled transitions 4714 [2022-12-13 22:09:12,036 INFO L134 LiptonReduction]: Checked pairs total: 9129 [2022-12-13 22:09:12,036 INFO L136 LiptonReduction]: Total number of compositions: 434 [2022-12-13 22:09:12,046 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 22:09:12,050 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;@7ec49c14, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 22:09:12,050 INFO L358 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2022-12-13 22:09:12,052 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 22:09:12,052 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 22:09:12,052 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:09:12,053 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 22:09:12,053 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-12-13 22:09:12,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:09:12,057 INFO L85 PathProgramCache]: Analyzing trace with hash 51776, now seen corresponding path program 1 times [2022-12-13 22:09:12,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:09:12,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747909228] [2022-12-13 22:09:12,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:09:12,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:09:12,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:09:12,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:09:12,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:09:12,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747909228] [2022-12-13 22:09:12,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747909228] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:09:12,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:09:12,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 22:09:12,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999271446] [2022-12-13 22:09:12,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:09:12,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:09:12,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:09:12,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:09:12,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:09:12,306 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 824 [2022-12-13 22:09:12,312 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 67 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 346.6666666666667) internal successors, (1040), 3 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:12,312 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:09:12,312 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 824 [2022-12-13 22:09:12,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:09:13,647 INFO L130 PetriNetUnfolder]: 9089/11730 cut-off events. [2022-12-13 22:09:13,647 INFO L131 PetriNetUnfolder]: For 322/322 co-relation queries the response was YES. [2022-12-13 22:09:13,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23765 conditions, 11730 events. 9089/11730 cut-off events. For 322/322 co-relation queries the response was YES. Maximal size of possible extension queue 808. Compared 57979 event pairs, 4751 based on Foata normal form. 0/4784 useless extension candidates. Maximal degree in co-relation 10950. Up to 5843 conditions per place. [2022-12-13 22:09:13,715 INFO L137 encePairwiseOnDemand]: 804/824 looper letters, 97 selfloop transitions, 6 changer transitions 0/107 dead transitions. [2022-12-13 22:09:13,715 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 107 transitions, 456 flow [2022-12-13 22:09:13,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:09:13,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 22:09:13,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1163 transitions. [2022-12-13 22:09:13,728 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4704692556634304 [2022-12-13 22:09:13,729 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1163 transitions. [2022-12-13 22:09:13,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1163 transitions. [2022-12-13 22:09:13,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:09:13,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1163 transitions. [2022-12-13 22:09:13,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 387.6666666666667) internal successors, (1163), 3 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:13,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 824.0) internal successors, (3296), 4 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:13,745 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 824.0) internal successors, (3296), 4 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:13,747 INFO L175 Difference]: Start difference. First operand has 69 places, 67 transitions, 152 flow. Second operand 3 states and 1163 transitions. [2022-12-13 22:09:13,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 107 transitions, 456 flow [2022-12-13 22:09:13,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 107 transitions, 432 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-13 22:09:13,757 INFO L231 Difference]: Finished difference. Result has 59 places, 64 transitions, 180 flow [2022-12-13 22:09:13,758 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=824, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=59, PETRI_TRANSITIONS=64} [2022-12-13 22:09:13,761 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, -10 predicate places. [2022-12-13 22:09:13,761 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 64 transitions, 180 flow [2022-12-13 22:09:13,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 346.6666666666667) internal successors, (1040), 3 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:13,762 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:09:13,762 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 22:09:13,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 22:09:13,762 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-12-13 22:09:13,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:09:13,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1606551, now seen corresponding path program 1 times [2022-12-13 22:09:13,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:09:13,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494006036] [2022-12-13 22:09:13,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:09:13,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:09:13,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:09:13,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:09:13,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:09:13,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494006036] [2022-12-13 22:09:13,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494006036] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:09:13,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568221185] [2022-12-13 22:09:13,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:09:13,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:09:13,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:09:13,835 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:09:13,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 22:09:13,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:09:13,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 22:09:13,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:09:13,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:09:13,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:09:13,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:09:13,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568221185] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:09:13,953 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:09:13,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-12-13 22:09:13,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187855341] [2022-12-13 22:09:13,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:09:13,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:09:13,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:09:13,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:09:13,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:09:14,022 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 824 [2022-12-13 22:09:14,027 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 64 transitions, 180 flow. Second operand has 7 states, 7 states have (on average 347.14285714285717) internal successors, (2430), 7 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:14,027 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:09:14,027 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 824 [2022-12-13 22:09:14,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:09:16,848 INFO L130 PetriNetUnfolder]: 22529/29079 cut-off events. [2022-12-13 22:09:16,849 INFO L131 PetriNetUnfolder]: For 135/135 co-relation queries the response was YES. [2022-12-13 22:09:16,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58226 conditions, 29079 events. 22529/29079 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 1869. Compared 160420 event pairs, 11807 based on Foata normal form. 0/11966 useless extension candidates. Maximal degree in co-relation 46247. Up to 5849 conditions per place. [2022-12-13 22:09:16,955 INFO L137 encePairwiseOnDemand]: 812/824 looper letters, 223 selfloop transitions, 33 changer transitions 0/260 dead transitions. [2022-12-13 22:09:16,955 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 260 transitions, 1168 flow [2022-12-13 22:09:16,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 22:09:16,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 22:09:16,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2687 transitions. [2022-12-13 22:09:16,960 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4658460471567268 [2022-12-13 22:09:16,960 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2687 transitions. [2022-12-13 22:09:16,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2687 transitions. [2022-12-13 22:09:16,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:09:16,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2687 transitions. [2022-12-13 22:09:16,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 383.85714285714283) internal successors, (2687), 7 states have internal predecessors, (2687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:16,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 824.0) internal successors, (6592), 8 states have internal predecessors, (6592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:16,972 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 824.0) internal successors, (6592), 8 states have internal predecessors, (6592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:16,973 INFO L175 Difference]: Start difference. First operand has 59 places, 64 transitions, 180 flow. Second operand 7 states and 2687 transitions. [2022-12-13 22:09:16,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 260 transitions, 1168 flow [2022-12-13 22:09:16,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 260 transitions, 1144 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 22:09:16,976 INFO L231 Difference]: Finished difference. Result has 66 places, 88 transitions, 387 flow [2022-12-13 22:09:16,976 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=824, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=387, PETRI_PLACES=66, PETRI_TRANSITIONS=88} [2022-12-13 22:09:16,976 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, -3 predicate places. [2022-12-13 22:09:16,976 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 88 transitions, 387 flow [2022-12-13 22:09:16,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 347.14285714285717) internal successors, (2430), 7 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:16,977 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:09:16,978 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2022-12-13 22:09:16,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 22:09:17,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:09:17,178 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-12-13 22:09:17,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:09:17,179 INFO L85 PathProgramCache]: Analyzing trace with hash 49804544, now seen corresponding path program 1 times [2022-12-13 22:09:17,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:09:17,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958013503] [2022-12-13 22:09:17,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:09:17,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:09:17,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:09:17,271 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:09:17,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:09:17,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958013503] [2022-12-13 22:09:17,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958013503] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:09:17,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035954318] [2022-12-13 22:09:17,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:09:17,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:09:17,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:09:17,273 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:09:17,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 22:09:17,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:09:17,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 22:09:17,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:09:17,360 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:09:17,360 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:09:17,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035954318] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:09:17,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 22:09:17,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-12-13 22:09:17,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860337794] [2022-12-13 22:09:17,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:09:17,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 22:09:17,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:09:17,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 22:09:17,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 22:09:17,393 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 824 [2022-12-13 22:09:17,395 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 88 transitions, 387 flow. Second operand has 5 states, 5 states have (on average 346.8) internal successors, (1734), 5 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:17,395 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:09:17,395 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 824 [2022-12-13 22:09:17,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:09:20,036 INFO L130 PetriNetUnfolder]: 22520/29067 cut-off events. [2022-12-13 22:09:20,036 INFO L131 PetriNetUnfolder]: For 140/140 co-relation queries the response was YES. [2022-12-13 22:09:20,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58229 conditions, 29067 events. 22520/29067 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 1753. Compared 158903 event pairs, 11807 based on Foata normal form. 2/11967 useless extension candidates. Maximal degree in co-relation 35034. Up to 17082 conditions per place. [2022-12-13 22:09:20,130 INFO L137 encePairwiseOnDemand]: 815/824 looper letters, 143 selfloop transitions, 15 changer transitions 0/162 dead transitions. [2022-12-13 22:09:20,130 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 162 transitions, 806 flow [2022-12-13 22:09:20,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 22:09:20,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 22:09:20,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1884 transitions. [2022-12-13 22:09:20,133 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45728155339805826 [2022-12-13 22:09:20,133 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1884 transitions. [2022-12-13 22:09:20,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1884 transitions. [2022-12-13 22:09:20,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:09:20,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1884 transitions. [2022-12-13 22:09:20,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 376.8) internal successors, (1884), 5 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:20,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 824.0) internal successors, (4944), 6 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:20,142 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 824.0) internal successors, (4944), 6 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:20,143 INFO L175 Difference]: Start difference. First operand has 66 places, 88 transitions, 387 flow. Second operand 5 states and 1884 transitions. [2022-12-13 22:09:20,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 162 transitions, 806 flow [2022-12-13 22:09:20,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 162 transitions, 776 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-12-13 22:09:20,145 INFO L231 Difference]: Finished difference. Result has 65 places, 76 transitions, 306 flow [2022-12-13 22:09:20,146 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=824, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=306, PETRI_PLACES=65, PETRI_TRANSITIONS=76} [2022-12-13 22:09:20,146 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, -4 predicate places. [2022-12-13 22:09:20,146 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 76 transitions, 306 flow [2022-12-13 22:09:20,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 346.8) internal successors, (1734), 5 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:20,147 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:09:20,147 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 22:09:20,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 22:09:20,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:09:20,349 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-12-13 22:09:20,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:09:20,349 INFO L85 PathProgramCache]: Analyzing trace with hash 49852192, now seen corresponding path program 1 times [2022-12-13 22:09:20,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:09:20,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949648806] [2022-12-13 22:09:20,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:09:20,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:09:20,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:09:20,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:09:20,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:09:20,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949648806] [2022-12-13 22:09:20,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949648806] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:09:20,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:09:20,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 22:09:20,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982018403] [2022-12-13 22:09:20,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:09:20,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:09:20,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:09:20,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:09:20,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:09:20,554 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 341 out of 824 [2022-12-13 22:09:20,556 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 76 transitions, 306 flow. Second operand has 3 states, 3 states have (on average 342.3333333333333) internal successors, (1027), 3 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:20,556 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:09:20,556 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 341 of 824 [2022-12-13 22:09:20,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:09:23,299 INFO L130 PetriNetUnfolder]: 23055/29718 cut-off events. [2022-12-13 22:09:23,299 INFO L131 PetriNetUnfolder]: For 149/149 co-relation queries the response was YES. [2022-12-13 22:09:23,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59472 conditions, 29718 events. 23055/29718 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 1906. Compared 163843 event pairs, 11995 based on Foata normal form. 1/11989 useless extension candidates. Maximal degree in co-relation 47481. Up to 29218 conditions per place. [2022-12-13 22:09:23,398 INFO L137 encePairwiseOnDemand]: 821/824 looper letters, 69 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2022-12-13 22:09:23,398 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 75 transitions, 444 flow [2022-12-13 22:09:23,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:09:23,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 22:09:23,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1077 transitions. [2022-12-13 22:09:23,400 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4356796116504854 [2022-12-13 22:09:23,400 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1077 transitions. [2022-12-13 22:09:23,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1077 transitions. [2022-12-13 22:09:23,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:09:23,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1077 transitions. [2022-12-13 22:09:23,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 359.0) internal successors, (1077), 3 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:23,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 824.0) internal successors, (3296), 4 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:23,406 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 824.0) internal successors, (3296), 4 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:23,406 INFO L175 Difference]: Start difference. First operand has 65 places, 76 transitions, 306 flow. Second operand 3 states and 1077 transitions. [2022-12-13 22:09:23,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 75 transitions, 444 flow [2022-12-13 22:09:23,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 75 transitions, 423 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 22:09:23,408 INFO L231 Difference]: Finished difference. Result has 64 places, 75 transitions, 285 flow [2022-12-13 22:09:23,408 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=824, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=285, PETRI_PLACES=64, PETRI_TRANSITIONS=75} [2022-12-13 22:09:23,409 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, -5 predicate places. [2022-12-13 22:09:23,409 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 75 transitions, 285 flow [2022-12-13 22:09:23,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 342.3333333333333) internal successors, (1027), 3 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:23,409 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:09:23,410 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 22:09:23,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 22:09:23,410 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-12-13 22:09:23,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:09:23,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1543990006, now seen corresponding path program 1 times [2022-12-13 22:09:23,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:09:23,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343594412] [2022-12-13 22:09:23,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:09:23,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:09:23,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:09:23,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:09:23,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:09:23,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343594412] [2022-12-13 22:09:23,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343594412] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:09:23,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126529121] [2022-12-13 22:09:23,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:09:23,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:09:23,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:09:23,495 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:09:23,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 22:09:23,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:09:23,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 22:09:23,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:09:23,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 22:09:23,596 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:09:23,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126529121] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:09:23,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 22:09:23,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-12-13 22:09:23,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319954611] [2022-12-13 22:09:23,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:09:23,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 22:09:23,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:09:23,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 22:09:23,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:09:23,657 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 341 out of 824 [2022-12-13 22:09:23,659 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 75 transitions, 285 flow. Second operand has 4 states, 4 states have (on average 342.25) internal successors, (1369), 4 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:23,659 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:09:23,659 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 341 of 824 [2022-12-13 22:09:23,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:09:25,782 INFO L130 PetriNetUnfolder]: 18445/23779 cut-off events. [2022-12-13 22:09:25,782 INFO L131 PetriNetUnfolder]: For 121/121 co-relation queries the response was YES. [2022-12-13 22:09:25,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47592 conditions, 23779 events. 18445/23779 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 1570. Compared 128135 event pairs, 9596 based on Foata normal form. 2/9597 useless extension candidates. Maximal degree in co-relation 47575. Up to 23370 conditions per place. [2022-12-13 22:09:25,880 INFO L137 encePairwiseOnDemand]: 813/824 looper letters, 58 selfloop transitions, 12 changer transitions 0/74 dead transitions. [2022-12-13 22:09:25,880 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 74 transitions, 421 flow [2022-12-13 22:09:25,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 22:09:25,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 22:09:25,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1425 transitions. [2022-12-13 22:09:25,883 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43234223300970875 [2022-12-13 22:09:25,883 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1425 transitions. [2022-12-13 22:09:25,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1425 transitions. [2022-12-13 22:09:25,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:09:25,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1425 transitions. [2022-12-13 22:09:25,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 356.25) internal successors, (1425), 4 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:25,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 824.0) internal successors, (4120), 5 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:25,891 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 824.0) internal successors, (4120), 5 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:25,891 INFO L175 Difference]: Start difference. First operand has 64 places, 75 transitions, 285 flow. Second operand 4 states and 1425 transitions. [2022-12-13 22:09:25,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 74 transitions, 421 flow [2022-12-13 22:09:25,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 74 transitions, 417 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 22:09:25,893 INFO L231 Difference]: Finished difference. Result has 67 places, 74 transitions, 323 flow [2022-12-13 22:09:25,893 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=824, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=323, PETRI_PLACES=67, PETRI_TRANSITIONS=74} [2022-12-13 22:09:25,894 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, -2 predicate places. [2022-12-13 22:09:25,894 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 74 transitions, 323 flow [2022-12-13 22:09:25,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 342.25) internal successors, (1369), 4 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:25,894 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:09:25,894 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-12-13 22:09:25,900 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 22:09:26,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:09:26,096 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-12-13 22:09:26,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:09:26,096 INFO L85 PathProgramCache]: Analyzing trace with hash 617574337, now seen corresponding path program 2 times [2022-12-13 22:09:26,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:09:26,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162239991] [2022-12-13 22:09:26,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:09:26,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:09:26,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:09:26,194 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:09:26,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:09:26,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162239991] [2022-12-13 22:09:26,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162239991] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:09:26,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747074863] [2022-12-13 22:09:26,195 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 22:09:26,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:09:26,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:09:26,196 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:09:26,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 22:09:26,282 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 22:09:26,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:09:26,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 22:09:26,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:09:26,297 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 22:09:26,297 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:09:26,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747074863] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:09:26,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 22:09:26,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-12-13 22:09:26,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501506872] [2022-12-13 22:09:26,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:09:26,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:09:26,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:09:26,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:09:26,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 22:09:26,327 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 349 out of 824 [2022-12-13 22:09:26,328 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 74 transitions, 323 flow. Second operand has 3 states, 3 states have (on average 350.0) internal successors, (1050), 3 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:26,328 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:09:26,329 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 349 of 824 [2022-12-13 22:09:26,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:09:28,576 INFO L130 PetriNetUnfolder]: 18445/23778 cut-off events. [2022-12-13 22:09:28,576 INFO L131 PetriNetUnfolder]: For 148/148 co-relation queries the response was YES. [2022-12-13 22:09:28,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47620 conditions, 23778 events. 18445/23778 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 1570. Compared 128266 event pairs, 9596 based on Foata normal form. 1/9595 useless extension candidates. Maximal degree in co-relation 47511. Up to 23373 conditions per place. [2022-12-13 22:09:28,663 INFO L137 encePairwiseOnDemand]: 821/824 looper letters, 64 selfloop transitions, 5 changer transitions 0/73 dead transitions. [2022-12-13 22:09:28,663 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 73 transitions, 451 flow [2022-12-13 22:09:28,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:09:28,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 22:09:28,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1099 transitions. [2022-12-13 22:09:28,665 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44457928802589 [2022-12-13 22:09:28,665 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1099 transitions. [2022-12-13 22:09:28,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1099 transitions. [2022-12-13 22:09:28,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:09:28,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1099 transitions. [2022-12-13 22:09:28,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 366.3333333333333) internal successors, (1099), 3 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:28,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 824.0) internal successors, (3296), 4 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:28,670 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 824.0) internal successors, (3296), 4 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:28,670 INFO L175 Difference]: Start difference. First operand has 67 places, 74 transitions, 323 flow. Second operand 3 states and 1099 transitions. [2022-12-13 22:09:28,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 73 transitions, 451 flow [2022-12-13 22:09:28,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 73 transitions, 427 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 22:09:28,672 INFO L231 Difference]: Finished difference. Result has 65 places, 73 transitions, 299 flow [2022-12-13 22:09:28,672 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=824, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=299, PETRI_PLACES=65, PETRI_TRANSITIONS=73} [2022-12-13 22:09:28,673 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, -4 predicate places. [2022-12-13 22:09:28,673 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 73 transitions, 299 flow [2022-12-13 22:09:28,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 350.0) internal successors, (1050), 3 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:28,673 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:09:28,673 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:09:28,678 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 22:09:28,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 22:09:28,875 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-12-13 22:09:28,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:09:28,876 INFO L85 PathProgramCache]: Analyzing trace with hash 2008893425, now seen corresponding path program 1 times [2022-12-13 22:09:28,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:09:28,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220412284] [2022-12-13 22:09:28,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:09:28,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:09:28,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:09:29,293 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:09:29,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:09:29,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220412284] [2022-12-13 22:09:29,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220412284] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:09:29,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143039649] [2022-12-13 22:09:29,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:09:29,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:09:29,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:09:29,295 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:09:29,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 22:09:29,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:09:29,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 31 conjunts are in the unsatisfiable core [2022-12-13 22:09:29,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:09:29,460 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-12-13 22:09:29,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2022-12-13 22:09:29,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 22:09:29,510 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 22:09:29,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-13 22:09:29,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 22:09:29,566 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-12-13 22:09:29,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 22:09:29,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 22:09:29,583 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 22:09:29,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:09:29,605 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_255 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_255) c_~A~0.base) c_~A~0.offset)))) is different from false [2022-12-13 22:09:29,706 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 22:09:29,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2022-12-13 22:09:29,715 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 22:09:29,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 71 [2022-12-13 22:09:29,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2022-12-13 22:09:29,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2022-12-13 22:09:29,823 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-12-13 22:09:29,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143039649] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:09:29,823 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:09:29,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 6] total 13 [2022-12-13 22:09:29,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576469352] [2022-12-13 22:09:29,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:09:29,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 22:09:29,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:09:29,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 22:09:29,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=146, Unknown=2, NotChecked=24, Total=210 [2022-12-13 22:09:29,986 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 824 [2022-12-13 22:09:29,988 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 73 transitions, 299 flow. Second operand has 15 states, 15 states have (on average 299.26666666666665) internal successors, (4489), 15 states have internal predecessors, (4489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:29,988 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:09:29,988 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 824 [2022-12-13 22:09:29,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:09:32,174 INFO L130 PetriNetUnfolder]: 18445/23774 cut-off events. [2022-12-13 22:09:32,174 INFO L131 PetriNetUnfolder]: For 138/138 co-relation queries the response was YES. [2022-12-13 22:09:32,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47601 conditions, 23774 events. 18445/23774 cut-off events. For 138/138 co-relation queries the response was YES. Maximal size of possible extension queue 1570. Compared 128118 event pairs, 9596 based on Foata normal form. 0/9594 useless extension candidates. Maximal degree in co-relation 47547. Up to 23337 conditions per place. [2022-12-13 22:09:32,270 INFO L137 encePairwiseOnDemand]: 816/824 looper letters, 55 selfloop transitions, 13 changer transitions 0/72 dead transitions. [2022-12-13 22:09:32,270 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 72 transitions, 431 flow [2022-12-13 22:09:32,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 22:09:32,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 22:09:32,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1842 transitions. [2022-12-13 22:09:32,274 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3725728155339806 [2022-12-13 22:09:32,274 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1842 transitions. [2022-12-13 22:09:32,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1842 transitions. [2022-12-13 22:09:32,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:09:32,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1842 transitions. [2022-12-13 22:09:32,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:32,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 824.0) internal successors, (5768), 7 states have internal predecessors, (5768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:32,289 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 824.0) internal successors, (5768), 7 states have internal predecessors, (5768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:32,290 INFO L175 Difference]: Start difference. First operand has 65 places, 73 transitions, 299 flow. Second operand 6 states and 1842 transitions. [2022-12-13 22:09:32,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 72 transitions, 431 flow [2022-12-13 22:09:32,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 72 transitions, 421 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 22:09:32,293 INFO L231 Difference]: Finished difference. Result has 67 places, 72 transitions, 311 flow [2022-12-13 22:09:32,293 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=824, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=311, PETRI_PLACES=67, PETRI_TRANSITIONS=72} [2022-12-13 22:09:32,294 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, -2 predicate places. [2022-12-13 22:09:32,294 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 72 transitions, 311 flow [2022-12-13 22:09:32,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 299.26666666666665) internal successors, (4489), 15 states have internal predecessors, (4489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:32,296 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:09:32,296 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:09:32,301 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 22:09:32,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:09:32,497 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-12-13 22:09:32,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:09:32,499 INFO L85 PathProgramCache]: Analyzing trace with hash 2008893402, now seen corresponding path program 1 times [2022-12-13 22:09:32,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:09:32,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944689411] [2022-12-13 22:09:32,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:09:32,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:09:32,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:09:32,719 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 22:09:32,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:09:32,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944689411] [2022-12-13 22:09:32,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944689411] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:09:32,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053172159] [2022-12-13 22:09:32,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:09:32,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:09:32,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:09:32,721 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:09:32,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 22:09:32,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:09:32,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-13 22:09:32,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:09:32,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 22:09:32,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 22:09:32,855 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 22:09:32,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-13 22:09:32,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 22:09:32,891 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 22:09:32,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:09:32,949 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 22:09:32,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2022-12-13 22:09:32,956 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 22:09:32,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 37 [2022-12-13 22:09:32,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-12-13 22:09:32,994 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 22:09:32,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053172159] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:09:32,995 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:09:32,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-12-13 22:09:32,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797501729] [2022-12-13 22:09:32,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:09:32,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 22:09:32,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:09:32,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 22:09:32,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-12-13 22:09:33,592 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 332 out of 824 [2022-12-13 22:09:33,594 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 72 transitions, 311 flow. Second operand has 12 states, 12 states have (on average 333.25) internal successors, (3999), 12 states have internal predecessors, (3999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:33,594 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:09:33,594 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 332 of 824 [2022-12-13 22:09:33,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:09:35,658 INFO L130 PetriNetUnfolder]: 18445/23770 cut-off events. [2022-12-13 22:09:35,658 INFO L131 PetriNetUnfolder]: For 148/148 co-relation queries the response was YES. [2022-12-13 22:09:35,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47600 conditions, 23770 events. 18445/23770 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 1570. Compared 128173 event pairs, 9596 based on Foata normal form. 0/9598 useless extension candidates. Maximal degree in co-relation 47481. Up to 23337 conditions per place. [2022-12-13 22:09:35,734 INFO L137 encePairwiseOnDemand]: 816/824 looper letters, 54 selfloop transitions, 13 changer transitions 0/71 dead transitions. [2022-12-13 22:09:35,734 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 71 transitions, 441 flow [2022-12-13 22:09:35,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 22:09:35,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 22:09:35,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2045 transitions. [2022-12-13 22:09:35,738 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4136326860841424 [2022-12-13 22:09:35,738 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2045 transitions. [2022-12-13 22:09:35,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2045 transitions. [2022-12-13 22:09:35,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:09:35,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2045 transitions. [2022-12-13 22:09:35,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 340.8333333333333) internal successors, (2045), 6 states have internal predecessors, (2045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:35,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 824.0) internal successors, (5768), 7 states have internal predecessors, (5768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:35,745 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 824.0) internal successors, (5768), 7 states have internal predecessors, (5768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:35,745 INFO L175 Difference]: Start difference. First operand has 67 places, 72 transitions, 311 flow. Second operand 6 states and 2045 transitions. [2022-12-13 22:09:35,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 71 transitions, 441 flow [2022-12-13 22:09:35,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 71 transitions, 425 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 22:09:35,747 INFO L231 Difference]: Finished difference. Result has 68 places, 71 transitions, 317 flow [2022-12-13 22:09:35,747 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=824, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=317, PETRI_PLACES=68, PETRI_TRANSITIONS=71} [2022-12-13 22:09:35,748 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, -1 predicate places. [2022-12-13 22:09:35,748 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 71 transitions, 317 flow [2022-12-13 22:09:35,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 333.25) internal successors, (3999), 12 states have internal predecessors, (3999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:35,749 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:09:35,749 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:09:35,754 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 22:09:35,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:09:35,951 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-12-13 22:09:35,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:09:35,952 INFO L85 PathProgramCache]: Analyzing trace with hash 2008893417, now seen corresponding path program 1 times [2022-12-13 22:09:35,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:09:35,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300205302] [2022-12-13 22:09:35,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:09:35,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:09:36,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:09:36,167 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 22:09:36,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:09:36,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300205302] [2022-12-13 22:09:36,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300205302] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:09:36,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139422936] [2022-12-13 22:09:36,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:09:36,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:09:36,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:09:36,169 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:09:36,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 22:09:36,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:09:36,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-13 22:09:36,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:09:36,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 22:09:36,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 22:09:36,294 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 22:09:36,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-13 22:09:36,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 22:09:36,321 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 22:09:36,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:09:36,372 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 22:09:36,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2022-12-13 22:09:36,378 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 22:09:36,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 31 [2022-12-13 22:09:36,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-12-13 22:09:36,417 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 22:09:36,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139422936] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:09:36,417 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:09:36,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2022-12-13 22:09:36,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802584474] [2022-12-13 22:09:36,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:09:36,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 22:09:36,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:09:36,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 22:09:36,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-12-13 22:09:36,860 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 332 out of 824 [2022-12-13 22:09:36,862 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 71 transitions, 317 flow. Second operand has 13 states, 13 states have (on average 333.2307692307692) internal successors, (4332), 13 states have internal predecessors, (4332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:36,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:09:36,862 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 332 of 824 [2022-12-13 22:09:36,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:09:38,820 INFO L130 PetriNetUnfolder]: 18445/23766 cut-off events. [2022-12-13 22:09:38,820 INFO L131 PetriNetUnfolder]: For 176/176 co-relation queries the response was YES. [2022-12-13 22:09:38,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47590 conditions, 23766 events. 18445/23766 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 1610. Compared 128265 event pairs, 9596 based on Foata normal form. 0/9598 useless extension candidates. Maximal degree in co-relation 47469. Up to 23337 conditions per place. [2022-12-13 22:09:38,905 INFO L137 encePairwiseOnDemand]: 816/824 looper letters, 53 selfloop transitions, 13 changer transitions 0/70 dead transitions. [2022-12-13 22:09:38,906 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 70 transitions, 445 flow [2022-12-13 22:09:38,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 22:09:38,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 22:09:38,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2044 transitions. [2022-12-13 22:09:38,909 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4134304207119741 [2022-12-13 22:09:38,909 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2044 transitions. [2022-12-13 22:09:38,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2044 transitions. [2022-12-13 22:09:38,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:09:38,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2044 transitions. [2022-12-13 22:09:38,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 340.6666666666667) internal successors, (2044), 6 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:38,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 824.0) internal successors, (5768), 7 states have internal predecessors, (5768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:38,917 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 824.0) internal successors, (5768), 7 states have internal predecessors, (5768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:38,917 INFO L175 Difference]: Start difference. First operand has 68 places, 71 transitions, 317 flow. Second operand 6 states and 2044 transitions. [2022-12-13 22:09:38,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 70 transitions, 445 flow [2022-12-13 22:09:38,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 70 transitions, 441 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 22:09:38,920 INFO L231 Difference]: Finished difference. Result has 71 places, 70 transitions, 335 flow [2022-12-13 22:09:38,920 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=824, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=335, PETRI_PLACES=71, PETRI_TRANSITIONS=70} [2022-12-13 22:09:38,921 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, 2 predicate places. [2022-12-13 22:09:38,921 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 70 transitions, 335 flow [2022-12-13 22:09:38,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 333.2307692307692) internal successors, (4332), 13 states have internal predecessors, (4332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:38,923 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:09:38,923 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:09:38,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 22:09:39,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-13 22:09:39,124 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-12-13 22:09:39,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:09:39,124 INFO L85 PathProgramCache]: Analyzing trace with hash 2008893426, now seen corresponding path program 1 times [2022-12-13 22:09:39,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:09:39,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447164998] [2022-12-13 22:09:39,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:09:39,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:09:39,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:09:39,341 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:09:39,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:09:39,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447164998] [2022-12-13 22:09:39,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447164998] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:09:39,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175669352] [2022-12-13 22:09:39,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:09:39,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:09:39,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:09:39,343 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:09:39,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 22:09:39,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:09:39,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-13 22:09:39,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:09:39,478 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-12-13 22:09:39,479 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2022-12-13 22:09:39,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 22:09:39,526 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 22:09:39,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-13 22:09:39,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 22:09:39,569 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 22:09:39,569 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-13 22:09:39,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 22:09:39,600 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:09:39,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:09:39,760 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 22:09:39,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2022-12-13 22:09:39,766 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 22:09:39,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 31 [2022-12-13 22:09:39,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-12-13 22:09:39,823 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:09:39,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175669352] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:09:39,823 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:09:39,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2022-12-13 22:09:39,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025378955] [2022-12-13 22:09:39,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:09:39,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 22:09:39,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:09:39,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 22:09:39,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-12-13 22:09:41,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 22:09:49,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 22:09:51,741 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 824 [2022-12-13 22:09:51,743 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 70 transitions, 335 flow. Second operand has 18 states, 18 states have (on average 313.05555555555554) internal successors, (5635), 18 states have internal predecessors, (5635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:51,743 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:09:51,743 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 824 [2022-12-13 22:09:51,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:09:53,752 INFO L130 PetriNetUnfolder]: 18445/23762 cut-off events. [2022-12-13 22:09:53,752 INFO L131 PetriNetUnfolder]: For 214/214 co-relation queries the response was YES. [2022-12-13 22:09:53,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47589 conditions, 23762 events. 18445/23762 cut-off events. For 214/214 co-relation queries the response was YES. Maximal size of possible extension queue 1610. Compared 128245 event pairs, 9596 based on Foata normal form. 4/9598 useless extension candidates. Maximal degree in co-relation 47457. Up to 23337 conditions per place. [2022-12-13 22:09:53,845 INFO L137 encePairwiseOnDemand]: 816/824 looper letters, 52 selfloop transitions, 13 changer transitions 0/69 dead transitions. [2022-12-13 22:09:53,845 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 69 transitions, 461 flow [2022-12-13 22:09:53,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 22:09:53,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 22:09:53,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1923 transitions. [2022-12-13 22:09:53,849 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.38895631067961167 [2022-12-13 22:09:53,849 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1923 transitions. [2022-12-13 22:09:53,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1923 transitions. [2022-12-13 22:09:53,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:09:53,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1923 transitions. [2022-12-13 22:09:53,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 320.5) internal successors, (1923), 6 states have internal predecessors, (1923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:53,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 824.0) internal successors, (5768), 7 states have internal predecessors, (5768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:53,856 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 824.0) internal successors, (5768), 7 states have internal predecessors, (5768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:53,856 INFO L175 Difference]: Start difference. First operand has 71 places, 70 transitions, 335 flow. Second operand 6 states and 1923 transitions. [2022-12-13 22:09:53,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 69 transitions, 461 flow [2022-12-13 22:09:53,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 69 transitions, 421 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-12-13 22:09:53,858 INFO L231 Difference]: Finished difference. Result has 69 places, 69 transitions, 317 flow [2022-12-13 22:09:53,858 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=824, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=317, PETRI_PLACES=69, PETRI_TRANSITIONS=69} [2022-12-13 22:09:53,859 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, 0 predicate places. [2022-12-13 22:09:53,859 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 69 transitions, 317 flow [2022-12-13 22:09:53,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 313.05555555555554) internal successors, (5635), 18 states have internal predecessors, (5635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:53,861 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:09:53,861 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2022-12-13 22:09:53,866 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 22:09:54,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 22:09:54,061 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-12-13 22:09:54,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:09:54,062 INFO L85 PathProgramCache]: Analyzing trace with hash 2144336810, now seen corresponding path program 1 times [2022-12-13 22:09:54,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:09:54,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467560519] [2022-12-13 22:09:54,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:09:54,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:09:54,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:09:54,136 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 22:09:54,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:09:54,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467560519] [2022-12-13 22:09:54,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467560519] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:09:54,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257416373] [2022-12-13 22:09:54,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:09:54,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:09:54,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:09:54,137 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:09:54,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 22:09:54,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:09:54,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 22:09:54,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:09:54,281 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 22:09:54,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:09:54,330 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 22:09:54,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257416373] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:09:54,331 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:09:54,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 13 [2022-12-13 22:09:54,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219900441] [2022-12-13 22:09:54,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:09:54,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 22:09:54,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:09:54,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 22:09:54,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-12-13 22:09:54,806 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 824 [2022-12-13 22:09:54,809 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 69 transitions, 317 flow. Second operand has 14 states, 14 states have (on average 336.2857142857143) internal successors, (4708), 14 states have internal predecessors, (4708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:54,809 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:09:54,809 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 824 [2022-12-13 22:09:54,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:09:57,274 INFO L130 PetriNetUnfolder]: 21460/27707 cut-off events. [2022-12-13 22:09:57,275 INFO L131 PetriNetUnfolder]: For 199/199 co-relation queries the response was YES. [2022-12-13 22:09:57,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55534 conditions, 27707 events. 21460/27707 cut-off events. For 199/199 co-relation queries the response was YES. Maximal size of possible extension queue 1581. Compared 150193 event pairs, 11255 based on Foata normal form. 2/11511 useless extension candidates. Maximal degree in co-relation 44881. Up to 17055 conditions per place. [2022-12-13 22:09:57,375 INFO L137 encePairwiseOnDemand]: 814/824 looper letters, 122 selfloop transitions, 22 changer transitions 0/148 dead transitions. [2022-12-13 22:09:57,375 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 148 transitions, 808 flow [2022-12-13 22:09:57,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 22:09:57,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 22:09:57,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3153 transitions. [2022-12-13 22:09:57,380 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42516181229773464 [2022-12-13 22:09:57,380 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3153 transitions. [2022-12-13 22:09:57,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3153 transitions. [2022-12-13 22:09:57,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:09:57,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3153 transitions. [2022-12-13 22:09:57,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 350.3333333333333) internal successors, (3153), 9 states have internal predecessors, (3153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:57,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 824.0) internal successors, (8240), 10 states have internal predecessors, (8240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:57,389 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 824.0) internal successors, (8240), 10 states have internal predecessors, (8240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:57,389 INFO L175 Difference]: Start difference. First operand has 69 places, 69 transitions, 317 flow. Second operand 9 states and 3153 transitions. [2022-12-13 22:09:57,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 148 transitions, 808 flow [2022-12-13 22:09:57,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 148 transitions, 772 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-13 22:09:57,391 INFO L231 Difference]: Finished difference. Result has 74 places, 74 transitions, 378 flow [2022-12-13 22:09:57,392 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=824, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=378, PETRI_PLACES=74, PETRI_TRANSITIONS=74} [2022-12-13 22:09:57,392 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, 5 predicate places. [2022-12-13 22:09:57,392 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 74 transitions, 378 flow [2022-12-13 22:09:57,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 336.2857142857143) internal successors, (4708), 14 states have internal predecessors, (4708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:57,392 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:09:57,393 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1] [2022-12-13 22:09:57,398 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 22:09:57,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-13 22:09:57,594 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-12-13 22:09:57,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:09:57,595 INFO L85 PathProgramCache]: Analyzing trace with hash -120529792, now seen corresponding path program 2 times [2022-12-13 22:09:57,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:09:57,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200830533] [2022-12-13 22:09:57,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:09:57,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:09:57,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:09:57,711 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 22:09:57,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:09:57,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200830533] [2022-12-13 22:09:57,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200830533] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:09:57,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169979362] [2022-12-13 22:09:57,712 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 22:09:57,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:09:57,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:09:57,713 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:09:57,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 22:09:57,802 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 22:09:57,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:09:57,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 22:09:57,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:09:57,824 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 22:09:57,824 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:09:57,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169979362] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:09:57,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 22:09:57,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2022-12-13 22:09:57,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908149261] [2022-12-13 22:09:57,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:09:57,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 22:09:57,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:09:57,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 22:09:57,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-12-13 22:09:57,886 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 347 out of 824 [2022-12-13 22:09:57,887 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 74 transitions, 378 flow. Second operand has 4 states, 4 states have (on average 348.25) internal successors, (1393), 4 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:57,887 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:09:57,887 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 347 of 824 [2022-12-13 22:09:57,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:09:59,965 INFO L130 PetriNetUnfolder]: 20378/26307 cut-off events. [2022-12-13 22:09:59,965 INFO L131 PetriNetUnfolder]: For 2426/2426 co-relation queries the response was YES. [2022-12-13 22:09:59,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52684 conditions, 26307 events. 20378/26307 cut-off events. For 2426/2426 co-relation queries the response was YES. Maximal size of possible extension queue 1511. Compared 142098 event pairs, 10605 based on Foata normal form. 788/11630 useless extension candidates. Maximal degree in co-relation 42168. Up to 25862 conditions per place. [2022-12-13 22:10:00,069 INFO L137 encePairwiseOnDemand]: 820/824 looper letters, 66 selfloop transitions, 1 changer transitions 0/71 dead transitions. [2022-12-13 22:10:00,069 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 71 transitions, 482 flow [2022-12-13 22:10:00,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:10:00,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 22:10:00,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1088 transitions. [2022-12-13 22:10:00,071 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4401294498381877 [2022-12-13 22:10:00,071 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1088 transitions. [2022-12-13 22:10:00,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1088 transitions. [2022-12-13 22:10:00,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:10:00,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1088 transitions. [2022-12-13 22:10:00,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 362.6666666666667) internal successors, (1088), 3 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:10:00,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 824.0) internal successors, (3296), 4 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:10:00,074 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 824.0) internal successors, (3296), 4 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:10:00,074 INFO L175 Difference]: Start difference. First operand has 74 places, 74 transitions, 378 flow. Second operand 3 states and 1088 transitions. [2022-12-13 22:10:00,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 71 transitions, 482 flow [2022-12-13 22:10:00,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 71 transitions, 419 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-12-13 22:10:00,076 INFO L231 Difference]: Finished difference. Result has 65 places, 71 transitions, 287 flow [2022-12-13 22:10:00,076 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=824, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=287, PETRI_PLACES=65, PETRI_TRANSITIONS=71} [2022-12-13 22:10:00,077 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, -4 predicate places. [2022-12-13 22:10:00,077 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 71 transitions, 287 flow [2022-12-13 22:10:00,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 348.25) internal successors, (1393), 4 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:10:00,077 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:10:00,077 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:10:00,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-13 22:10:00,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 22:10:00,279 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-12-13 22:10:00,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:10:00,280 INFO L85 PathProgramCache]: Analyzing trace with hash -637135927, now seen corresponding path program 1 times [2022-12-13 22:10:00,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:10:00,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068031442] [2022-12-13 22:10:00,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:10:00,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:10:00,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:10:00,360 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 22:10:00,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:10:00,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068031442] [2022-12-13 22:10:00,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068031442] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:10:00,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:10:00,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 22:10:00,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062426709] [2022-12-13 22:10:00,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:10:00,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:10:00,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:10:00,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:10:00,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:10:00,368 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 824 [2022-12-13 22:10:00,369 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 71 transitions, 287 flow. Second operand has 3 states, 3 states have (on average 357.0) internal successors, (1071), 3 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:10:00,369 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:10:00,369 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 824 [2022-12-13 22:10:00,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:10:02,915 INFO L130 PetriNetUnfolder]: 30048/40052 cut-off events. [2022-12-13 22:10:02,915 INFO L131 PetriNetUnfolder]: For 423/423 co-relation queries the response was YES. [2022-12-13 22:10:02,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80730 conditions, 40052 events. 30048/40052 cut-off events. For 423/423 co-relation queries the response was YES. Maximal size of possible extension queue 2109. Compared 242172 event pairs, 11100 based on Foata normal form. 0/19217 useless extension candidates. Maximal degree in co-relation 80719. Up to 22683 conditions per place. [2022-12-13 22:10:03,037 INFO L137 encePairwiseOnDemand]: 821/824 looper letters, 99 selfloop transitions, 2 changer transitions 0/104 dead transitions. [2022-12-13 22:10:03,038 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 104 transitions, 559 flow [2022-12-13 22:10:03,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:10:03,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 22:10:03,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1138 transitions. [2022-12-13 22:10:03,041 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4603559870550162 [2022-12-13 22:10:03,041 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1138 transitions. [2022-12-13 22:10:03,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1138 transitions. [2022-12-13 22:10:03,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:10:03,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1138 transitions. [2022-12-13 22:10:03,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 379.3333333333333) internal successors, (1138), 3 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) [2022-12-13 22:10:03,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 824.0) internal successors, (3296), 4 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:10:03,048 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 824.0) internal successors, (3296), 4 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:10:03,048 INFO L175 Difference]: Start difference. First operand has 65 places, 71 transitions, 287 flow. Second operand 3 states and 1138 transitions. [2022-12-13 22:10:03,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 104 transitions, 559 flow [2022-12-13 22:10:03,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 104 transitions, 558 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 22:10:03,051 INFO L231 Difference]: Finished difference. Result has 67 places, 72 transitions, 298 flow [2022-12-13 22:10:03,051 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=824, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=298, PETRI_PLACES=67, PETRI_TRANSITIONS=72} [2022-12-13 22:10:03,052 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, -2 predicate places. [2022-12-13 22:10:03,052 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 72 transitions, 298 flow [2022-12-13 22:10:03,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 357.0) internal successors, (1071), 3 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:10:03,053 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:10:03,053 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:10:03,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 22:10:03,053 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-12-13 22:10:03,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:10:03,053 INFO L85 PathProgramCache]: Analyzing trace with hash -637135929, now seen corresponding path program 1 times [2022-12-13 22:10:03,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:10:03,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584480484] [2022-12-13 22:10:03,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:10:03,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:10:03,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:10:03,148 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 22:10:03,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:10:03,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584480484] [2022-12-13 22:10:03,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584480484] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:10:03,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419110629] [2022-12-13 22:10:03,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:10:03,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:10:03,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:10:03,150 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:10:03,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 22:10:03,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:10:03,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 22:10:03,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:10:03,293 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 22:10:03,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:10:03,335 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 22:10:03,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419110629] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:10:03,335 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:10:03,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2022-12-13 22:10:03,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720190773] [2022-12-13 22:10:03,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:10:03,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 22:10:03,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:10:03,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 22:10:03,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-12-13 22:10:03,639 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 824 [2022-12-13 22:10:03,642 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 72 transitions, 298 flow. Second operand has 12 states, 12 states have (on average 332.8333333333333) internal successors, (3994), 12 states have internal predecessors, (3994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:10:03,642 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:10:03,642 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 824 [2022-12-13 22:10:03,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:10:05,502 INFO L130 PetriNetUnfolder]: 19376/26282 cut-off events. [2022-12-13 22:10:05,502 INFO L131 PetriNetUnfolder]: For 2876/2876 co-relation queries the response was YES. [2022-12-13 22:10:05,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55067 conditions, 26282 events. 19376/26282 cut-off events. For 2876/2876 co-relation queries the response was YES. Maximal size of possible extension queue 1477. Compared 153696 event pairs, 9900 based on Foata normal form. 276/14314 useless extension candidates. Maximal degree in co-relation 55055. Up to 19180 conditions per place. [2022-12-13 22:10:05,588 INFO L137 encePairwiseOnDemand]: 810/824 looper letters, 120 selfloop transitions, 21 changer transitions 0/144 dead transitions. [2022-12-13 22:10:05,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 144 transitions, 737 flow [2022-12-13 22:10:05,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 22:10:05,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 22:10:05,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2783 transitions. [2022-12-13 22:10:05,592 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4221783980582524 [2022-12-13 22:10:05,592 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2783 transitions. [2022-12-13 22:10:05,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2783 transitions. [2022-12-13 22:10:05,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:10:05,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2783 transitions. [2022-12-13 22:10:05,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 347.875) internal successors, (2783), 8 states have internal predecessors, (2783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:10:05,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 824.0) internal successors, (7416), 9 states have internal predecessors, (7416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:10:05,600 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 824.0) internal successors, (7416), 9 states have internal predecessors, (7416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:10:05,601 INFO L175 Difference]: Start difference. First operand has 67 places, 72 transitions, 298 flow. Second operand 8 states and 2783 transitions. [2022-12-13 22:10:05,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 144 transitions, 737 flow [2022-12-13 22:10:05,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 144 transitions, 734 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 22:10:05,607 INFO L231 Difference]: Finished difference. Result has 76 places, 74 transitions, 375 flow [2022-12-13 22:10:05,607 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=824, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=375, PETRI_PLACES=76, PETRI_TRANSITIONS=74} [2022-12-13 22:10:05,607 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, 7 predicate places. [2022-12-13 22:10:05,607 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 74 transitions, 375 flow [2022-12-13 22:10:05,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 332.8333333333333) internal successors, (3994), 12 states have internal predecessors, (3994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:10:05,608 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:10:05,608 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:10:05,613 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 22:10:05,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 22:10:05,809 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-12-13 22:10:05,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:10:05,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1380479451, now seen corresponding path program 1 times [2022-12-13 22:10:05,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:10:05,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406840856] [2022-12-13 22:10:05,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:10:05,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:10:05,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:10:05,922 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 22:10:05,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:10:05,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406840856] [2022-12-13 22:10:05,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406840856] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:10:05,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302859781] [2022-12-13 22:10:05,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:10:05,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:10:05,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:10:05,924 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:10:05,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 22:10:06,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:10:06,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 22:10:06,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:10:06,070 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 22:10:06,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:10:06,105 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 22:10:06,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302859781] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:10:06,105 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:10:06,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-12-13 22:10:06,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801264382] [2022-12-13 22:10:06,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:10:06,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 22:10:06,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:10:06,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 22:10:06,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-12-13 22:10:06,376 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 824 [2022-12-13 22:10:06,378 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 74 transitions, 375 flow. Second operand has 12 states, 12 states have (on average 332.8333333333333) internal successors, (3994), 12 states have internal predecessors, (3994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:10:06,378 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:10:06,378 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 824 [2022-12-13 22:10:06,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:10:08,159 INFO L130 PetriNetUnfolder]: 15619/21637 cut-off events. [2022-12-13 22:10:08,159 INFO L131 PetriNetUnfolder]: For 3300/3981 co-relation queries the response was YES. [2022-12-13 22:10:08,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49912 conditions, 21637 events. 15619/21637 cut-off events. For 3300/3981 co-relation queries the response was YES. Maximal size of possible extension queue 1587. Compared 136571 event pairs, 8891 based on Foata normal form. 681/13160 useless extension candidates. Maximal degree in co-relation 49896. Up to 16630 conditions per place. [2022-12-13 22:10:08,233 INFO L137 encePairwiseOnDemand]: 813/824 looper letters, 103 selfloop transitions, 21 changer transitions 0/128 dead transitions. [2022-12-13 22:10:08,234 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 128 transitions, 762 flow [2022-12-13 22:10:08,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 22:10:08,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 22:10:08,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2762 transitions. [2022-12-13 22:10:08,238 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41899271844660196 [2022-12-13 22:10:08,238 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2762 transitions. [2022-12-13 22:10:08,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2762 transitions. [2022-12-13 22:10:08,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:10:08,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2762 transitions. [2022-12-13 22:10:08,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 345.25) internal successors, (2762), 8 states have internal predecessors, (2762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:10:08,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 824.0) internal successors, (7416), 9 states have internal predecessors, (7416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:10:08,245 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 824.0) internal successors, (7416), 9 states have internal predecessors, (7416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:10:08,245 INFO L175 Difference]: Start difference. First operand has 76 places, 74 transitions, 375 flow. Second operand 8 states and 2762 transitions. [2022-12-13 22:10:08,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 128 transitions, 762 flow [2022-12-13 22:10:08,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 128 transitions, 738 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 22:10:08,250 INFO L231 Difference]: Finished difference. Result has 83 places, 76 transitions, 422 flow [2022-12-13 22:10:08,250 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=824, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=422, PETRI_PLACES=83, PETRI_TRANSITIONS=76} [2022-12-13 22:10:08,250 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, 14 predicate places. [2022-12-13 22:10:08,251 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 76 transitions, 422 flow [2022-12-13 22:10:08,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 332.8333333333333) internal successors, (3994), 12 states have internal predecessors, (3994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:10:08,251 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:10:08,251 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:10:08,256 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 22:10:08,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:10:08,453 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-12-13 22:10:08,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:10:08,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1151188889, now seen corresponding path program 1 times [2022-12-13 22:10:08,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:10:08,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144277790] [2022-12-13 22:10:08,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:10:08,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:10:08,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:10:08,526 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 22:10:08,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:10:08,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144277790] [2022-12-13 22:10:08,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144277790] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:10:08,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:10:08,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 22:10:08,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152614038] [2022-12-13 22:10:08,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:10:08,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:10:08,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:10:08,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:10:08,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:10:08,537 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 824 [2022-12-13 22:10:08,537 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 76 transitions, 422 flow. Second operand has 3 states, 3 states have (on average 358.0) internal successors, (1074), 3 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:10:08,538 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:10:08,538 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 824 [2022-12-13 22:10:08,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:10:10,939 INFO L130 PetriNetUnfolder]: 23147/31651 cut-off events. [2022-12-13 22:10:10,939 INFO L131 PetriNetUnfolder]: For 7728/8716 co-relation queries the response was YES. [2022-12-13 22:10:10,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79595 conditions, 31651 events. 23147/31651 cut-off events. For 7728/8716 co-relation queries the response was YES. Maximal size of possible extension queue 1832. Compared 202719 event pairs, 11472 based on Foata normal form. 988/21116 useless extension candidates. Maximal degree in co-relation 79575. Up to 21498 conditions per place. [2022-12-13 22:10:11,079 INFO L137 encePairwiseOnDemand]: 820/824 looper letters, 102 selfloop transitions, 2 changer transitions 0/109 dead transitions. [2022-12-13 22:10:11,080 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 109 transitions, 729 flow [2022-12-13 22:10:11,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:10:11,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 22:10:11,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1136 transitions. [2022-12-13 22:10:11,082 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.459546925566343 [2022-12-13 22:10:11,082 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1136 transitions. [2022-12-13 22:10:11,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1136 transitions. [2022-12-13 22:10:11,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:10:11,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1136 transitions. [2022-12-13 22:10:11,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 378.6666666666667) internal successors, (1136), 3 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:10:11,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 824.0) internal successors, (3296), 4 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:10:11,086 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 824.0) internal successors, (3296), 4 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:10:11,086 INFO L175 Difference]: Start difference. First operand has 83 places, 76 transitions, 422 flow. Second operand 3 states and 1136 transitions. [2022-12-13 22:10:11,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 109 transitions, 729 flow [2022-12-13 22:10:11,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 109 transitions, 705 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 22:10:11,107 INFO L231 Difference]: Finished difference. Result has 83 places, 77 transitions, 412 flow [2022-12-13 22:10:11,107 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=824, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=412, PETRI_PLACES=83, PETRI_TRANSITIONS=77} [2022-12-13 22:10:11,108 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, 14 predicate places. [2022-12-13 22:10:11,108 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 77 transitions, 412 flow [2022-12-13 22:10:11,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 358.0) internal successors, (1074), 3 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:10:11,108 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:10:11,108 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:10:11,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 22:10:11,108 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-12-13 22:10:11,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:10:11,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1188126248, now seen corresponding path program 2 times [2022-12-13 22:10:11,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:10:11,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506743201] [2022-12-13 22:10:11,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:10:11,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:10:11,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:10:12,022 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 22:10:12,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:10:12,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506743201] [2022-12-13 22:10:12,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506743201] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:10:12,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547129325] [2022-12-13 22:10:12,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 22:10:12,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:10:12,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:10:12,024 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:10:12,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fd51e6c-fef1-4d86-aca7-ac99edc6c93e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 22:10:12,147 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 22:10:12,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:10:12,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 34 conjunts are in the unsatisfiable core [2022-12-13 22:10:12,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:10:12,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 22:10:12,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 22:10:12,194 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2022-12-13 22:10:12,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 36 [2022-12-13 22:10:12,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 22:10:12,334 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 22:10:12,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-13 22:10:12,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 22:10:12,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 22:10:12,457 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 22:10:12,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-13 22:10:12,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 22:10:12,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 22:10:12,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 22:10:12,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 22:10:12,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 22:10:12,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 22:10:12,661 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 22:10:12,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:10:16,850 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_~A~0.offset 4))) (and (forall ((~B~0.offset Int) (v_ArrVal_781 (Array Int Int)) (~B~0.base Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_781))) (let ((.cse0 (select (select .cse1 ~B~0.base) (+ ~B~0.offset 4)))) (or (<= .cse0 0) (<= 0 (+ .cse0 (select (select .cse1 c_~A~0.base) .cse2) 2147483648)) (not (<= .cse0 4294967295)))))) (forall ((~B~0.offset Int) (v_ArrVal_781 (Array Int Int)) (~B~0.base Int)) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_781))) (let ((.cse3 (select (select .cse4 ~B~0.base) (+ ~B~0.offset 4)))) (or (not (<= 0 .cse3)) (not (<= .cse3 0)) (<= 0 (+ .cse3 (select (select .cse4 c_~A~0.base) .cse2) 2147483648)))))))) is different from false [2022-12-13 22:10:16,895 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_~A~0.offset 4))) (and (forall ((v_ArrVal_780 (Array Int Int)) (~B~0.offset Int) (v_ArrVal_781 (Array Int Int)) (~B~0.base Int)) (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_780) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_781))) (let ((.cse0 (select (select .cse1 ~B~0.base) (+ ~B~0.offset 4)))) (or (<= .cse0 0) (<= 0 (+ (select (select .cse1 c_~A~0.base) .cse2) .cse0 2147483648)) (not (<= .cse0 4294967295)))))) (forall ((v_ArrVal_780 (Array Int Int)) (~B~0.offset Int) (v_ArrVal_781 (Array Int Int)) (~B~0.base Int)) (let ((.cse3 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_780) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_781))) (let ((.cse4 (select (select .cse3 ~B~0.base) (+ ~B~0.offset 4)))) (or (<= 0 (+ (select (select .cse3 c_~A~0.base) .cse2) .cse4 2147483648)) (not (<= .cse4 0)) (not (<= 0 .cse4)))))))) is different from false [2022-12-13 22:10:17,548 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 22:10:17,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 300 treesize of output 217 [2022-12-13 22:10:17,686 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 22:10:17,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 816628 treesize of output 791533 [2022-12-13 22:10:19,940 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 22:10:19,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 791450 treesize of output 758435 [2022-12-13 22:10:22,180 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 22:10:22,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 758426 treesize of output 741923 [2022-12-13 22:10:24,426 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 22:10:24,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 741914 treesize of output 609827 [2022-12-13 22:10:26,630 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 22:10:26,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 609818 treesize of output 543779 [2022-12-13 22:10:28,851 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 22:10:28,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 543770 treesize of output 541667 [2022-12-13 22:10:31,071 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 22:10:31,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 541658 treesize of output 541139 [2022-12-13 22:10:33,279 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 22:10:33,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 541130 treesize of output 540083 [2022-12-13 22:10:35,493 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 22:10:35,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 540074 treesize of output 539819 [2022-12-13 22:10:56,688 WARN L233 SmtUtils]: Spent 7.69s on a formula simplification. DAG size of input: 679 DAG size of output: 679 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-13 22:11:07,783 WARN L233 SmtUtils]: Spent 8.59s on a formula simplification. DAG size of input: 677 DAG size of output: 677 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-13 22:11:19,284 WARN L233 SmtUtils]: Spent 9.49s on a formula simplification. DAG size of input: 675 DAG size of output: 675 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-13 22:11:30,511 WARN L233 SmtUtils]: Spent 7.52s on a formula simplification. DAG size of input: 671 DAG size of output: 671 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-13 22:11:42,346 WARN L233 SmtUtils]: Spent 10.05s on a formula simplification. DAG size of input: 671 DAG size of output: 671 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-13 22:12:04,915 WARN L233 SmtUtils]: Spent 13.63s on a formula simplification. DAG size of input: 671 DAG size of output: 671 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-13 22:12:15,258 WARN L233 SmtUtils]: Spent 8.63s on a formula simplification. DAG size of input: 671 DAG size of output: 671 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-13 22:12:25,652 WARN L233 SmtUtils]: Spent 8.67s on a formula simplification. DAG size of input: 671 DAG size of output: 671 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-13 22:12:37,650 WARN L233 SmtUtils]: Spent 5.99s on a formula simplification. DAG size of input: 669 DAG size of output: 669 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-13 22:12:53,749 WARN L233 SmtUtils]: Spent 7.14s on a formula simplification. DAG size of input: 667 DAG size of output: 667 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-13 22:13:06,346 WARN L233 SmtUtils]: Spent 5.02s on a formula simplification. DAG size of input: 648 DAG size of output: 648 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)