./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i --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_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/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_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/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_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/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 dda5467f7679a243042daf02aae11f74f39b907c2525dfc042cb8ad8b69dcfc9 --- 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 17:16:49,923 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 17:16:49,924 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 17:16:49,943 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 17:16:49,943 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 17:16:49,945 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 17:16:49,946 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 17:16:49,947 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 17:16:49,949 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 17:16:49,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 17:16:49,951 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 17:16:49,952 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 17:16:49,952 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 17:16:49,953 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 17:16:49,954 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 17:16:49,955 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 17:16:49,956 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 17:16:49,957 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 17:16:49,959 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 17:16:49,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 17:16:49,962 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 17:16:49,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 17:16:49,965 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 17:16:49,965 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 17:16:49,969 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 17:16:49,969 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 17:16:49,969 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 17:16:49,970 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 17:16:49,971 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 17:16:49,972 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 17:16:49,972 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 17:16:49,973 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 17:16:49,973 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 17:16:49,974 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 17:16:49,975 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 17:16:49,976 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 17:16:49,976 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 17:16:49,976 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 17:16:49,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 17:16:49,977 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 17:16:49,978 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 17:16:49,979 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 17:16:49,999 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 17:16:50,000 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 17:16:50,000 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 17:16:50,000 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 17:16:50,001 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 17:16:50,001 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 17:16:50,002 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 17:16:50,002 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 17:16:50,002 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 17:16:50,002 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 17:16:50,003 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 17:16:50,003 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 17:16:50,003 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 17:16:50,003 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 17:16:50,003 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 17:16:50,003 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 17:16:50,004 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 17:16:50,004 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 17:16:50,004 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 17:16:50,004 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 17:16:50,004 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 17:16:50,004 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 17:16:50,005 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 17:16:50,005 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 17:16:50,005 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 17:16:50,005 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 17:16:50,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:16:50,006 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 17:16:50,006 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 17:16:50,006 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 17:16:50,006 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 17:16:50,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 17:16:50,007 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 17:16:50,007 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 17:16:50,007 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 17:16:50,007 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 17:16:50,008 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 17:16:50,008 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_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dda5467f7679a243042daf02aae11f74f39b907c2525dfc042cb8ad8b69dcfc9 [2022-12-13 17:16:50,206 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 17:16:50,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 17:16:50,227 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 17:16:50,228 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 17:16:50,229 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 17:16:50,230 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i [2022-12-13 17:16:52,842 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 17:16:53,041 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 17:16:53,041 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i [2022-12-13 17:16:53,052 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/data/3a29e4cea/23cfdcd5846d45249d9764e844ee033e/FLAG675620193 [2022-12-13 17:16:53,063 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/data/3a29e4cea/23cfdcd5846d45249d9764e844ee033e [2022-12-13 17:16:53,064 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 17:16:53,065 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 17:16:53,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 17:16:53,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 17:16:53,069 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 17:16:53,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:16:53" (1/1) ... [2022-12-13 17:16:53,070 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73217556 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:16:53, skipping insertion in model container [2022-12-13 17:16:53,071 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:16:53" (1/1) ... [2022-12-13 17:16:53,076 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 17:16:53,119 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 17:16:53,478 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_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i[47038,47051] [2022-12-13 17:16:53,487 WARN L1576 CHandler]: Possible shadowing of function new [2022-12-13 17:16:53,487 WARN L1576 CHandler]: Possible shadowing of function new [2022-12-13 17:16:53,488 WARN L1576 CHandler]: Possible shadowing of function new [2022-12-13 17:16:53,488 WARN L1576 CHandler]: Possible shadowing of function new [2022-12-13 17:16:53,510 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:16:53,526 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 17:16:53,559 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_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i[47038,47051] [2022-12-13 17:16:53,562 WARN L1576 CHandler]: Possible shadowing of function new [2022-12-13 17:16:53,562 WARN L1576 CHandler]: Possible shadowing of function new [2022-12-13 17:16:53,563 WARN L1576 CHandler]: Possible shadowing of function new [2022-12-13 17:16:53,563 WARN L1576 CHandler]: Possible shadowing of function new [2022-12-13 17:16:53,575 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:16:53,614 INFO L208 MainTranslator]: Completed translation [2022-12-13 17:16:53,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:16:53 WrapperNode [2022-12-13 17:16:53,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 17:16:53,615 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 17:16:53,616 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 17:16:53,616 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 17:16:53,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:16:53" (1/1) ... [2022-12-13 17:16:53,636 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:16:53" (1/1) ... [2022-12-13 17:16:53,669 INFO L138 Inliner]: procedures = 278, calls = 51, calls flagged for inlining = 11, calls inlined = 12, statements flattened = 237 [2022-12-13 17:16:53,670 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 17:16:53,670 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 17:16:53,671 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 17:16:53,671 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 17:16:53,680 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:16:53" (1/1) ... [2022-12-13 17:16:53,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:16:53" (1/1) ... [2022-12-13 17:16:53,690 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:16:53" (1/1) ... [2022-12-13 17:16:53,690 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:16:53" (1/1) ... [2022-12-13 17:16:53,700 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:16:53" (1/1) ... [2022-12-13 17:16:53,705 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:16:53" (1/1) ... [2022-12-13 17:16:53,707 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:16:53" (1/1) ... [2022-12-13 17:16:53,708 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:16:53" (1/1) ... [2022-12-13 17:16:53,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 17:16:53,713 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 17:16:53,713 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 17:16:53,713 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 17:16:53,714 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:16:53" (1/1) ... [2022-12-13 17:16:53,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:16:53,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:16:53,741 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 17:16:53,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 17:16:53,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 17:16:53,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 17:16:53,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 17:16:53,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 17:16:53,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 17:16:53,776 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 17:16:53,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 17:16:53,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 17:16:53,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 17:16:53,777 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-13 17:16:53,777 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-13 17:16:53,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 17:16:53,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 17:16:53,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 17:16:53,779 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 17:16:53,908 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 17:16:53,911 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 17:16:54,218 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 17:16:54,227 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 17:16:54,227 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-12-13 17:16:54,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:16:54 BoogieIcfgContainer [2022-12-13 17:16:54,230 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 17:16:54,233 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 17:16:54,233 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 17:16:54,236 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 17:16:54,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 05:16:53" (1/3) ... [2022-12-13 17:16:54,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69cd1813 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:16:54, skipping insertion in model container [2022-12-13 17:16:54,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:16:53" (2/3) ... [2022-12-13 17:16:54,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69cd1813 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:16:54, skipping insertion in model container [2022-12-13 17:16:54,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:16:54" (3/3) ... [2022-12-13 17:16:54,239 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_92-evilcollapse_racing.i [2022-12-13 17:16:54,246 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 17:16:54,253 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 17:16:54,254 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-12-13 17:16:54,254 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 17:16:54,329 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-13 17:16:54,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 284 transitions, 576 flow [2022-12-13 17:16:54,442 INFO L130 PetriNetUnfolder]: 28/301 cut-off events. [2022-12-13 17:16:54,443 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-12-13 17:16:54,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 301 events. 28/301 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 564 event pairs, 0 based on Foata normal form. 0/254 useless extension candidates. Maximal degree in co-relation 164. Up to 4 conditions per place. [2022-12-13 17:16:54,449 INFO L82 GeneralOperation]: Start removeDead. Operand has 261 places, 284 transitions, 576 flow [2022-12-13 17:16:54,455 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 259 places, 281 transitions, 570 flow [2022-12-13 17:16:54,459 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 17:16:54,470 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 259 places, 281 transitions, 570 flow [2022-12-13 17:16:54,473 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 259 places, 281 transitions, 570 flow [2022-12-13 17:16:54,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 259 places, 281 transitions, 570 flow [2022-12-13 17:16:54,522 INFO L130 PetriNetUnfolder]: 27/298 cut-off events. [2022-12-13 17:16:54,522 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-12-13 17:16:54,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 298 events. 27/298 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 550 event pairs, 0 based on Foata normal form. 0/252 useless extension candidates. Maximal degree in co-relation 164. Up to 4 conditions per place. [2022-12-13 17:16:54,527 INFO L119 LiptonReduction]: Number of co-enabled transitions 5400 [2022-12-13 17:17:16,082 WARN L233 SmtUtils]: Spent 12.42s on a formula simplification. DAG size of input: 192 DAG size of output: 190 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 17:17:22,956 WARN L233 SmtUtils]: Spent 6.87s on a formula simplification that was a NOOP. DAG size: 178 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 17:17:36,434 WARN L233 SmtUtils]: Spent 13.48s on a formula simplification. DAG size of input: 192 DAG size of output: 190 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 17:17:42,037 WARN L233 SmtUtils]: Spent 5.60s on a formula simplification that was a NOOP. DAG size: 178 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 17:17:59,346 WARN L233 SmtUtils]: Spent 17.31s on a formula simplification. DAG size of input: 194 DAG size of output: 192 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 17:18:07,504 WARN L233 SmtUtils]: Spent 8.15s on a formula simplification that was a NOOP. DAG size: 180 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 17:18:23,230 WARN L233 SmtUtils]: Spent 15.72s on a formula simplification. DAG size of input: 192 DAG size of output: 191 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 17:18:30,164 WARN L233 SmtUtils]: Spent 6.93s on a formula simplification that was a NOOP. DAG size: 179 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 17:18:30,471 INFO L134 LiptonReduction]: Checked pairs total: 6138 [2022-12-13 17:18:30,472 INFO L136 LiptonReduction]: Total number of compositions: 302 [2022-12-13 17:18:30,481 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:18:30,486 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;@35082744, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:18:30,486 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2022-12-13 17:18:30,488 INFO L130 PetriNetUnfolder]: 2/5 cut-off events. [2022-12-13 17:18:30,488 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 17:18:30,489 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:18:30,489 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 17:18:30,490 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 17:18:30,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:18:30,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1097281, now seen corresponding path program 1 times [2022-12-13 17:18:30,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:18:30,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846789873] [2022-12-13 17:18:30,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:18:30,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:18:30,582 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:18:30,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [318784766] [2022-12-13 17:18:30,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:18:30,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:18:30,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:18:30,584 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:18:30,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 17:18:30,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:18:30,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 17:18:30,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:18:30,678 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 17:18:30,678 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:18:30,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:18:30,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846789873] [2022-12-13 17:18:30,678 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 17:18:30,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318784766] [2022-12-13 17:18:30,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318784766] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:18:30,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:18:30,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 17:18:30,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218437636] [2022-12-13 17:18:30,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:18:30,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:18:30,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:18:30,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:18:30,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:18:30,729 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 586 [2022-12-13 17:18:30,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 52 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 256.0) internal successors, (768), 3 states have internal predecessors, (768), 0 states have call successors, (0), 0 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 17:18:30,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:18:30,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 586 [2022-12-13 17:18:30,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:18:30,980 INFO L130 PetriNetUnfolder]: 102/232 cut-off events. [2022-12-13 17:18:30,980 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 17:18:30,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 452 conditions, 232 events. 102/232 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 844 event pairs, 80 based on Foata normal form. 12/134 useless extension candidates. Maximal degree in co-relation 404. Up to 209 conditions per place. [2022-12-13 17:18:30,982 INFO L137 encePairwiseOnDemand]: 567/586 looper letters, 38 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2022-12-13 17:18:30,982 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 45 transitions, 180 flow [2022-12-13 17:18:30,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:18:30,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:18:30,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 823 transitions. [2022-12-13 17:18:30,994 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4681456200227531 [2022-12-13 17:18:30,994 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 823 transitions. [2022-12-13 17:18:30,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 823 transitions. [2022-12-13 17:18:30,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:18:30,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 823 transitions. [2022-12-13 17:18:31,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 274.3333333333333) internal successors, (823), 3 states have internal predecessors, (823), 0 states have call successors, (0), 0 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 17:18:31,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 586.0) internal successors, (2344), 4 states have internal predecessors, (2344), 0 states have call successors, (0), 0 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 17:18:31,008 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 586.0) internal successors, (2344), 4 states have internal predecessors, (2344), 0 states have call successors, (0), 0 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 17:18:31,009 INFO L175 Difference]: Start difference. First operand has 41 places, 52 transitions, 112 flow. Second operand 3 states and 823 transitions. [2022-12-13 17:18:31,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 45 transitions, 180 flow [2022-12-13 17:18:31,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 45 transitions, 180 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 17:18:31,013 INFO L231 Difference]: Finished difference. Result has 43 places, 43 transitions, 120 flow [2022-12-13 17:18:31,015 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=43, PETRI_TRANSITIONS=43} [2022-12-13 17:18:31,018 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2022-12-13 17:18:31,018 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 43 transitions, 120 flow [2022-12-13 17:18:31,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 256.0) internal successors, (768), 3 states have internal predecessors, (768), 0 states have call successors, (0), 0 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 17:18:31,019 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:18:31,019 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 17:18:31,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 17:18:31,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:18:31,221 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 17:18:31,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:18:31,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1097460, now seen corresponding path program 1 times [2022-12-13 17:18:31,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:18:31,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845401009] [2022-12-13 17:18:31,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:18:31,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:18:31,284 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:18:31,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1487455285] [2022-12-13 17:18:31,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:18:31,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:18:31,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:18:31,286 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:18:31,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 17:18:31,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:18:31,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 17:18:31,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:18:31,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:18:31,397 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:18:31,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:18:31,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845401009] [2022-12-13 17:18:31,397 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 17:18:31,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487455285] [2022-12-13 17:18:31,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487455285] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:18:31,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:18:31,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:18:31,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15489733] [2022-12-13 17:18:31,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:18:31,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:18:31,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:18:31,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:18:31,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:18:31,458 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 586 [2022-12-13 17:18:31,459 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 43 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 258.0) internal successors, (774), 3 states have internal predecessors, (774), 0 states have call successors, (0), 0 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 17:18:31,459 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:18:31,459 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 586 [2022-12-13 17:18:31,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:18:31,612 INFO L130 PetriNetUnfolder]: 101/230 cut-off events. [2022-12-13 17:18:31,613 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 17:18:31,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 460 conditions, 230 events. 101/230 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 839 event pairs, 80 based on Foata normal form. 2/127 useless extension candidates. Maximal degree in co-relation 443. Up to 210 conditions per place. [2022-12-13 17:18:31,614 INFO L137 encePairwiseOnDemand]: 584/586 looper letters, 37 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2022-12-13 17:18:31,614 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 42 transitions, 188 flow [2022-12-13 17:18:31,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:18:31,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:18:31,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 809 transitions. [2022-12-13 17:18:31,616 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4601820250284414 [2022-12-13 17:18:31,616 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 809 transitions. [2022-12-13 17:18:31,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 809 transitions. [2022-12-13 17:18:31,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:18:31,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 809 transitions. [2022-12-13 17:18:31,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 269.6666666666667) internal successors, (809), 3 states have internal predecessors, (809), 0 states have call successors, (0), 0 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 17:18:31,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 586.0) internal successors, (2344), 4 states have internal predecessors, (2344), 0 states have call successors, (0), 0 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 17:18:31,621 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 586.0) internal successors, (2344), 4 states have internal predecessors, (2344), 0 states have call successors, (0), 0 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 17:18:31,621 INFO L175 Difference]: Start difference. First operand has 43 places, 43 transitions, 120 flow. Second operand 3 states and 809 transitions. [2022-12-13 17:18:31,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 42 transitions, 188 flow [2022-12-13 17:18:31,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 42 transitions, 184 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:18:31,622 INFO L231 Difference]: Finished difference. Result has 43 places, 42 transitions, 113 flow [2022-12-13 17:18:31,623 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=43, PETRI_TRANSITIONS=42} [2022-12-13 17:18:31,623 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2022-12-13 17:18:31,623 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 42 transitions, 113 flow [2022-12-13 17:18:31,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 258.0) internal successors, (774), 3 states have internal predecessors, (774), 0 states have call successors, (0), 0 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 17:18:31,624 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:18:31,624 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2022-12-13 17:18:31,629 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 17:18:31,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:18:31,825 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 17:18:31,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:18:31,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1054631061, now seen corresponding path program 1 times [2022-12-13 17:18:31,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:18:31,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506753238] [2022-12-13 17:18:31,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:18:31,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:18:31,844 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:18:31,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [211450314] [2022-12-13 17:18:31,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:18:31,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:18:31,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:18:31,845 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:18:31,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 17:18:31,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:18:31,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 17:18:31,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:18:31,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:18:31,925 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:18:31,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:18:31,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506753238] [2022-12-13 17:18:31,925 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 17:18:31,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211450314] [2022-12-13 17:18:31,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211450314] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:18:31,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:18:31,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:18:31,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210911171] [2022-12-13 17:18:31,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:18:31,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:18:31,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:18:31,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:18:31,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:18:31,941 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 586 [2022-12-13 17:18:31,942 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 42 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 258.6666666666667) internal successors, (776), 3 states have internal predecessors, (776), 0 states have call successors, (0), 0 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 17:18:31,942 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:18:31,943 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 586 [2022-12-13 17:18:31,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:18:32,179 INFO L130 PetriNetUnfolder]: 101/234 cut-off events. [2022-12-13 17:18:32,179 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 17:18:32,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 471 conditions, 234 events. 101/234 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 858 event pairs, 80 based on Foata normal form. 1/129 useless extension candidates. Maximal degree in co-relation 459. Up to 212 conditions per place. [2022-12-13 17:18:32,180 INFO L137 encePairwiseOnDemand]: 581/586 looper letters, 38 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2022-12-13 17:18:32,180 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 45 transitions, 205 flow [2022-12-13 17:18:32,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:18:32,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:18:32,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 813 transitions. [2022-12-13 17:18:32,183 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46245733788395904 [2022-12-13 17:18:32,183 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 813 transitions. [2022-12-13 17:18:32,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 813 transitions. [2022-12-13 17:18:32,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:18:32,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 813 transitions. [2022-12-13 17:18:32,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 271.0) internal successors, (813), 3 states have internal predecessors, (813), 0 states have call successors, (0), 0 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 17:18:32,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 586.0) internal successors, (2344), 4 states have internal predecessors, (2344), 0 states have call successors, (0), 0 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 17:18:32,187 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 586.0) internal successors, (2344), 4 states have internal predecessors, (2344), 0 states have call successors, (0), 0 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 17:18:32,187 INFO L175 Difference]: Start difference. First operand has 43 places, 42 transitions, 113 flow. Second operand 3 states and 813 transitions. [2022-12-13 17:18:32,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 45 transitions, 205 flow [2022-12-13 17:18:32,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 45 transitions, 205 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 17:18:32,188 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 134 flow [2022-12-13 17:18:32,188 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2022-12-13 17:18:32,188 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 5 predicate places. [2022-12-13 17:18:32,189 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 134 flow [2022-12-13 17:18:32,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 258.6666666666667) internal successors, (776), 3 states have internal predecessors, (776), 0 states have call successors, (0), 0 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 17:18:32,189 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:18:32,189 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-12-13 17:18:32,195 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 17:18:32,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:18:32,390 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 17:18:32,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:18:32,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1664264953, now seen corresponding path program 1 times [2022-12-13 17:18:32,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:18:32,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821451042] [2022-12-13 17:18:32,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:18:32,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:18:32,417 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:18:32,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [379611113] [2022-12-13 17:18:32,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:18:32,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:18:32,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:18:32,419 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:18:32,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 17:18:32,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:18:32,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 17:18:32,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:18:32,555 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:18:32,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:18:32,569 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:18:32,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:18:32,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821451042] [2022-12-13 17:18:32,569 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 17:18:32,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379611113] [2022-12-13 17:18:32,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379611113] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:18:32,569 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 17:18:32,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-12-13 17:18:32,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901412849] [2022-12-13 17:18:32,570 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 17:18:32,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 17:18:32,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:18:32,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:18:32,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:18:32,618 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 586 [2022-12-13 17:18:32,619 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 134 flow. Second operand has 6 states, 6 states have (on average 257.5) internal successors, (1545), 6 states have internal predecessors, (1545), 0 states have call successors, (0), 0 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 17:18:32,619 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:18:32,619 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 586 [2022-12-13 17:18:32,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:18:33,317 INFO L130 PetriNetUnfolder]: 103/246 cut-off events. [2022-12-13 17:18:33,318 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-12-13 17:18:33,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 521 conditions, 246 events. 103/246 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 917 event pairs, 80 based on Foata normal form. 6/144 useless extension candidates. Maximal degree in co-relation 506. Up to 210 conditions per place. [2022-12-13 17:18:33,319 INFO L137 encePairwiseOnDemand]: 579/586 looper letters, 42 selfloop transitions, 8 changer transitions 0/54 dead transitions. [2022-12-13 17:18:33,319 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 54 transitions, 278 flow [2022-12-13 17:18:33,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 17:18:33,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 17:18:33,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1593 transitions. [2022-12-13 17:18:33,322 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45307167235494883 [2022-12-13 17:18:33,322 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1593 transitions. [2022-12-13 17:18:33,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1593 transitions. [2022-12-13 17:18:33,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:18:33,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1593 transitions. [2022-12-13 17:18:33,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 265.5) internal successors, (1593), 6 states have internal predecessors, (1593), 0 states have call successors, (0), 0 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 17:18:33,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 586.0) internal successors, (4102), 7 states have internal predecessors, (4102), 0 states have call successors, (0), 0 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 17:18:33,330 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 586.0) internal successors, (4102), 7 states have internal predecessors, (4102), 0 states have call successors, (0), 0 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 17:18:33,330 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 134 flow. Second operand 6 states and 1593 transitions. [2022-12-13 17:18:33,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 54 transitions, 278 flow [2022-12-13 17:18:33,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 54 transitions, 275 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:18:33,332 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 210 flow [2022-12-13 17:18:33,332 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=210, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2022-12-13 17:18:33,333 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2022-12-13 17:18:33,333 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 210 flow [2022-12-13 17:18:33,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 257.5) internal successors, (1545), 6 states have internal predecessors, (1545), 0 states have call successors, (0), 0 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 17:18:33,334 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:18:33,334 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1] [2022-12-13 17:18:33,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 17:18:33,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:18:33,535 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 17:18:33,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:18:33,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1412566763, now seen corresponding path program 2 times [2022-12-13 17:18:33,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:18:33,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232892975] [2022-12-13 17:18:33,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:18:33,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:18:33,580 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:18:33,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [748489066] [2022-12-13 17:18:33,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 17:18:33,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:18:33,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:18:33,582 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:18:33,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 17:18:33,704 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 17:18:33,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:18:33,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 17:18:33,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:18:33,711 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 17:18:33,711 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:18:33,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:18:33,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232892975] [2022-12-13 17:18:33,712 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 17:18:33,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748489066] [2022-12-13 17:18:33,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748489066] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:18:33,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:18:33,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:18:33,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416800243] [2022-12-13 17:18:33,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:18:33,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:18:33,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:18:33,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:18:33,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:18:33,727 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 586 [2022-12-13 17:18:33,728 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 210 flow. Second operand has 3 states, 3 states have (on average 257.0) internal successors, (771), 3 states have internal predecessors, (771), 0 states have call successors, (0), 0 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 17:18:33,728 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:18:33,728 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 586 [2022-12-13 17:18:33,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:18:33,935 INFO L130 PetriNetUnfolder]: 103/244 cut-off events. [2022-12-13 17:18:33,935 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-12-13 17:18:33,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 558 conditions, 244 events. 103/244 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 902 event pairs, 80 based on Foata normal form. 1/138 useless extension candidates. Maximal degree in co-relation 538. Up to 224 conditions per place. [2022-12-13 17:18:33,936 INFO L137 encePairwiseOnDemand]: 582/586 looper letters, 41 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2022-12-13 17:18:33,937 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 48 transitions, 298 flow [2022-12-13 17:18:33,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:18:33,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:18:33,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 804 transitions. [2022-12-13 17:18:33,939 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45733788395904434 [2022-12-13 17:18:33,939 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 804 transitions. [2022-12-13 17:18:33,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 804 transitions. [2022-12-13 17:18:33,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:18:33,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 804 transitions. [2022-12-13 17:18:33,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 0 states have call successors, (0), 0 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 17:18:33,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 586.0) internal successors, (2344), 4 states have internal predecessors, (2344), 0 states have call successors, (0), 0 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 17:18:33,943 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 586.0) internal successors, (2344), 4 states have internal predecessors, (2344), 0 states have call successors, (0), 0 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 17:18:33,943 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 210 flow. Second operand 3 states and 804 transitions. [2022-12-13 17:18:33,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 48 transitions, 298 flow [2022-12-13 17:18:33,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 48 transitions, 287 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-12-13 17:18:33,946 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 212 flow [2022-12-13 17:18:33,946 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2022-12-13 17:18:33,946 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 15 predicate places. [2022-12-13 17:18:33,947 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 212 flow [2022-12-13 17:18:33,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 257.0) internal successors, (771), 3 states have internal predecessors, (771), 0 states have call successors, (0), 0 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 17:18:33,947 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:18:33,947 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1] [2022-12-13 17:18:33,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-13 17:18:34,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:18:34,149 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 17:18:34,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:18:34,150 INFO L85 PathProgramCache]: Analyzing trace with hash -839891739, now seen corresponding path program 3 times [2022-12-13 17:18:34,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:18:34,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611562064] [2022-12-13 17:18:34,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:18:34,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:18:34,204 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:18:34,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1073649544] [2022-12-13 17:18:34,204 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 17:18:34,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:18:34,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:18:34,205 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:18:34,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 17:18:34,441 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 17:18:34,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:18:34,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 17:18:34,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:18:34,472 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 17:18:34,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:18:34,649 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 17:18:34,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:18:34,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611562064] [2022-12-13 17:18:34,649 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 17:18:34,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073649544] [2022-12-13 17:18:34,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073649544] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:18:34,650 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 17:18:34,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-12-13 17:18:34,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862341318] [2022-12-13 17:18:34,650 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 17:18:34,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 17:18:34,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:18:34,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 17:18:34,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-12-13 17:18:35,323 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 586 [2022-12-13 17:18:35,326 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 212 flow. Second operand has 10 states, 10 states have (on average 250.4) internal successors, (2504), 10 states have internal predecessors, (2504), 0 states have call successors, (0), 0 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 17:18:35,327 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:18:35,327 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 586 [2022-12-13 17:18:35,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:18:38,104 INFO L130 PetriNetUnfolder]: 203/472 cut-off events. [2022-12-13 17:18:38,104 INFO L131 PetriNetUnfolder]: For 69/69 co-relation queries the response was YES. [2022-12-13 17:18:38,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1029 conditions, 472 events. 203/472 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1978 event pairs, 160 based on Foata normal form. 2/268 useless extension candidates. Maximal degree in co-relation 1007. Up to 208 conditions per place. [2022-12-13 17:18:38,106 INFO L137 encePairwiseOnDemand]: 577/586 looper letters, 72 selfloop transitions, 15 changer transitions 0/91 dead transitions. [2022-12-13 17:18:38,106 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 91 transitions, 558 flow [2022-12-13 17:18:38,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 17:18:38,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 17:18:38,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2823 transitions. [2022-12-13 17:18:38,110 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4379460130313373 [2022-12-13 17:18:38,110 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2823 transitions. [2022-12-13 17:18:38,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2823 transitions. [2022-12-13 17:18:38,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:18:38,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2823 transitions. [2022-12-13 17:18:38,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 256.6363636363636) internal successors, (2823), 11 states have internal predecessors, (2823), 0 states have call successors, (0), 0 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 17:18:38,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 586.0) internal successors, (7032), 12 states have internal predecessors, (7032), 0 states have call successors, (0), 0 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 17:18:38,120 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 586.0) internal successors, (7032), 12 states have internal predecessors, (7032), 0 states have call successors, (0), 0 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 17:18:38,120 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 212 flow. Second operand 11 states and 2823 transitions. [2022-12-13 17:18:38,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 91 transitions, 558 flow [2022-12-13 17:18:38,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 91 transitions, 544 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:18:38,122 INFO L231 Difference]: Finished difference. Result has 68 places, 57 transitions, 334 flow [2022-12-13 17:18:38,122 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=334, PETRI_PLACES=68, PETRI_TRANSITIONS=57} [2022-12-13 17:18:38,123 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 27 predicate places. [2022-12-13 17:18:38,123 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 57 transitions, 334 flow [2022-12-13 17:18:38,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 250.4) internal successors, (2504), 10 states have internal predecessors, (2504), 0 states have call successors, (0), 0 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 17:18:38,123 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:18:38,123 INFO L209 CegarLoopForPetriNet]: trace histogram [6, 2, 1, 1, 1] [2022-12-13 17:18:38,130 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 17:18:38,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:18:38,324 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 17:18:38,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:18:38,325 INFO L85 PathProgramCache]: Analyzing trace with hash -266835230, now seen corresponding path program 1 times [2022-12-13 17:18:38,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:18:38,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730704315] [2022-12-13 17:18:38,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:18:38,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:18:38,400 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:18:38,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [831178136] [2022-12-13 17:18:38,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:18:38,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:18:38,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:18:38,401 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:18:38,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 17:18:38,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:18:38,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 1536 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 17:18:38,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:18:38,788 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 17:18:38,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:18:38,832 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 17:18:38,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:18:38,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730704315] [2022-12-13 17:18:38,832 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 17:18:38,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831178136] [2022-12-13 17:18:38,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831178136] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:18:38,833 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 17:18:38,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-12-13 17:18:38,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684660942] [2022-12-13 17:18:38,833 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 17:18:38,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 17:18:38,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:18:38,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 17:18:38,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-12-13 17:18:38,921 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 586 [2022-12-13 17:18:38,925 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 57 transitions, 334 flow. Second operand has 12 states, 12 states have (on average 257.3333333333333) internal successors, (3088), 12 states have internal predecessors, (3088), 0 states have call successors, (0), 0 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 17:18:38,925 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:18:38,925 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 586 [2022-12-13 17:18:38,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:18:39,928 INFO L130 PetriNetUnfolder]: 203/508 cut-off events. [2022-12-13 17:18:39,928 INFO L131 PetriNetUnfolder]: For 410/410 co-relation queries the response was YES. [2022-12-13 17:18:39,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1254 conditions, 508 events. 203/508 cut-off events. For 410/410 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1960 event pairs, 160 based on Foata normal form. 18/323 useless extension candidates. Maximal degree in co-relation 1227. Up to 412 conditions per place. [2022-12-13 17:18:39,930 INFO L137 encePairwiseOnDemand]: 580/586 looper letters, 59 selfloop transitions, 21 changer transitions 0/84 dead transitions. [2022-12-13 17:18:39,930 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 84 transitions, 751 flow [2022-12-13 17:18:39,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 17:18:39,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 17:18:39,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3146 transitions. [2022-12-13 17:18:39,935 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4473833902161547 [2022-12-13 17:18:39,935 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3146 transitions. [2022-12-13 17:18:39,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3146 transitions. [2022-12-13 17:18:39,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:18:39,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3146 transitions. [2022-12-13 17:18:39,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 262.1666666666667) internal successors, (3146), 12 states have internal predecessors, (3146), 0 states have call successors, (0), 0 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 17:18:39,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 586.0) internal successors, (7618), 13 states have internal predecessors, (7618), 0 states have call successors, (0), 0 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 17:18:39,947 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 586.0) internal successors, (7618), 13 states have internal predecessors, (7618), 0 states have call successors, (0), 0 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 17:18:39,947 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 334 flow. Second operand 12 states and 3146 transitions. [2022-12-13 17:18:39,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 84 transitions, 751 flow [2022-12-13 17:18:39,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 84 transitions, 721 flow, removed 13 selfloop flow, removed 3 redundant places. [2022-12-13 17:18:39,950 INFO L231 Difference]: Finished difference. Result has 83 places, 66 transitions, 494 flow [2022-12-13 17:18:39,950 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=494, PETRI_PLACES=83, PETRI_TRANSITIONS=66} [2022-12-13 17:18:39,951 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 42 predicate places. [2022-12-13 17:18:39,951 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 66 transitions, 494 flow [2022-12-13 17:18:39,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 257.3333333333333) internal successors, (3088), 12 states have internal predecessors, (3088), 0 states have call successors, (0), 0 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 17:18:39,952 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:18:39,952 INFO L209 CegarLoopForPetriNet]: trace histogram [12, 2, 1, 1, 1] [2022-12-13 17:18:39,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-13 17:18:40,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:18:40,153 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 17:18:40,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:18:40,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1801442722, now seen corresponding path program 2 times [2022-12-13 17:18:40,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:18:40,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241514626] [2022-12-13 17:18:40,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:18:40,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:18:40,308 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:18:40,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [637588738] [2022-12-13 17:18:40,308 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 17:18:40,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:18:40,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:18:40,309 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:18:40,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 17:18:40,931 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 17:18:40,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:18:40,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 2940 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 17:18:40,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:18:41,023 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 34 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 17:18:41,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:18:41,164 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 34 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 17:18:41,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:18:41,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241514626] [2022-12-13 17:18:41,164 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 17:18:41,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637588738] [2022-12-13 17:18:41,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637588738] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:18:41,165 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 17:18:41,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-12-13 17:18:41,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193637317] [2022-12-13 17:18:41,165 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 17:18:41,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 17:18:41,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:18:41,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 17:18:41,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-12-13 17:18:41,327 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 586 [2022-12-13 17:18:41,332 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 66 transitions, 494 flow. Second operand has 24 states, 24 states have (on average 257.1666666666667) internal successors, (6172), 24 states have internal predecessors, (6172), 0 states have call successors, (0), 0 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 17:18:41,332 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:18:41,332 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 586 [2022-12-13 17:18:41,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:18:44,182 INFO L130 PetriNetUnfolder]: 203/580 cut-off events. [2022-12-13 17:18:44,182 INFO L131 PetriNetUnfolder]: For 2393/2393 co-relation queries the response was YES. [2022-12-13 17:18:44,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1832 conditions, 580 events. 203/580 cut-off events. For 2393/2393 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2121 event pairs, 160 based on Foata normal form. 36/413 useless extension candidates. Maximal degree in co-relation 1799. Up to 412 conditions per place. [2022-12-13 17:18:44,184 INFO L137 encePairwiseOnDemand]: 580/586 looper letters, 95 selfloop transitions, 33 changer transitions 0/132 dead transitions. [2022-12-13 17:18:44,184 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 132 transitions, 1580 flow [2022-12-13 17:18:44,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 17:18:44,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-12-13 17:18:44,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 6266 transitions. [2022-12-13 17:18:44,191 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44553469852104666 [2022-12-13 17:18:44,191 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 6266 transitions. [2022-12-13 17:18:44,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 6266 transitions. [2022-12-13 17:18:44,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:18:44,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 6266 transitions. [2022-12-13 17:18:44,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 261.0833333333333) internal successors, (6266), 24 states have internal predecessors, (6266), 0 states have call successors, (0), 0 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 17:18:44,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 586.0) internal successors, (14650), 25 states have internal predecessors, (14650), 0 states have call successors, (0), 0 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 17:18:44,223 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 586.0) internal successors, (14650), 25 states have internal predecessors, (14650), 0 states have call successors, (0), 0 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 17:18:44,223 INFO L175 Difference]: Start difference. First operand has 83 places, 66 transitions, 494 flow. Second operand 24 states and 6266 transitions. [2022-12-13 17:18:44,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 132 transitions, 1580 flow [2022-12-13 17:18:44,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 132 transitions, 1466 flow, removed 19 selfloop flow, removed 4 redundant places. [2022-12-13 17:18:44,230 INFO L231 Difference]: Finished difference. Result has 115 places, 81 transitions, 772 flow [2022-12-13 17:18:44,230 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=772, PETRI_PLACES=115, PETRI_TRANSITIONS=81} [2022-12-13 17:18:44,231 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 74 predicate places. [2022-12-13 17:18:44,231 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 81 transitions, 772 flow [2022-12-13 17:18:44,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 257.1666666666667) internal successors, (6172), 24 states have internal predecessors, (6172), 0 states have call successors, (0), 0 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 17:18:44,233 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:18:44,233 INFO L209 CegarLoopForPetriNet]: trace histogram [24, 2, 1, 1, 1] [2022-12-13 17:18:44,242 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 17:18:44,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-13 17:18:44,435 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 17:18:44,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:18:44,436 INFO L85 PathProgramCache]: Analyzing trace with hash 39418658, now seen corresponding path program 3 times [2022-12-13 17:18:44,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:18:44,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894160555] [2022-12-13 17:18:44,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:18:44,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:18:44,628 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:18:44,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1309398270] [2022-12-13 17:18:44,629 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 17:18:44,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:18:44,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:18:44,630 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:18:44,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 17:18:45,228 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 17:18:45,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:18:45,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 17:18:45,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:18:45,282 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-12-13 17:18:45,283 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:18:45,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:18:45,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894160555] [2022-12-13 17:18:45,283 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 17:18:45,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309398270] [2022-12-13 17:18:45,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309398270] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:18:45,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:18:45,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 17:18:45,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031057365] [2022-12-13 17:18:45,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:18:45,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:18:45,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:18:45,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:18:45,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:18:45,338 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 586 [2022-12-13 17:18:45,339 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 81 transitions, 772 flow. Second operand has 7 states, 7 states have (on average 253.14285714285714) internal successors, (1772), 7 states have internal predecessors, (1772), 0 states have call successors, (0), 0 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 17:18:45,339 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:18:45,339 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 586 [2022-12-13 17:18:45,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:18:46,049 INFO L130 PetriNetUnfolder]: 201/536 cut-off events. [2022-12-13 17:18:46,049 INFO L131 PetriNetUnfolder]: For 1414/1414 co-relation queries the response was YES. [2022-12-13 17:18:46,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1566 conditions, 536 events. 201/536 cut-off events. For 1414/1414 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1883 event pairs, 160 based on Foata normal form. 43/377 useless extension candidates. Maximal degree in co-relation 1519. Up to 468 conditions per place. [2022-12-13 17:18:46,051 INFO L137 encePairwiseOnDemand]: 580/586 looper letters, 79 selfloop transitions, 9 changer transitions 0/92 dead transitions. [2022-12-13 17:18:46,051 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 92 transitions, 993 flow [2022-12-13 17:18:46,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 17:18:46,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 17:18:46,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1553 transitions. [2022-12-13 17:18:46,054 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4416951080773606 [2022-12-13 17:18:46,054 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1553 transitions. [2022-12-13 17:18:46,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1553 transitions. [2022-12-13 17:18:46,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:18:46,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1553 transitions. [2022-12-13 17:18:46,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 258.8333333333333) internal successors, (1553), 6 states have internal predecessors, (1553), 0 states have call successors, (0), 0 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 17:18:46,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 586.0) internal successors, (4102), 7 states have internal predecessors, (4102), 0 states have call successors, (0), 0 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 17:18:46,061 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 586.0) internal successors, (4102), 7 states have internal predecessors, (4102), 0 states have call successors, (0), 0 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 17:18:46,061 INFO L175 Difference]: Start difference. First operand has 115 places, 81 transitions, 772 flow. Second operand 6 states and 1553 transitions. [2022-12-13 17:18:46,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 92 transitions, 993 flow [2022-12-13 17:18:46,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 92 transitions, 885 flow, removed 28 selfloop flow, removed 11 redundant places. [2022-12-13 17:18:46,069 INFO L231 Difference]: Finished difference. Result has 107 places, 71 transitions, 561 flow [2022-12-13 17:18:46,069 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=543, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=561, PETRI_PLACES=107, PETRI_TRANSITIONS=71} [2022-12-13 17:18:46,070 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 66 predicate places. [2022-12-13 17:18:46,070 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 71 transitions, 561 flow [2022-12-13 17:18:46,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 253.14285714285714) internal successors, (1772), 7 states have internal predecessors, (1772), 0 states have call successors, (0), 0 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 17:18:46,070 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:18:46,070 INFO L209 CegarLoopForPetriNet]: trace histogram [46, 3, 2, 1, 1] [2022-12-13 17:18:46,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-13 17:18:46,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:18:46,272 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 17:18:46,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:18:46,273 INFO L85 PathProgramCache]: Analyzing trace with hash -583268618, now seen corresponding path program 4 times [2022-12-13 17:18:46,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:18:46,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999025261] [2022-12-13 17:18:46,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:18:46,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:18:46,670 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:18:46,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [478169693] [2022-12-13 17:18:46,670 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 17:18:46,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:18:46,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:18:46,671 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:18:46,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 17:18:48,705 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 17:18:48,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:18:48,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 10936 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-13 17:18:48,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:18:48,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1179 backedges. 600 proven. 253 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2022-12-13 17:18:48,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:18:49,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1179 backedges. 600 proven. 253 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2022-12-13 17:18:49,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:18:49,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999025261] [2022-12-13 17:18:49,283 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 17:18:49,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478169693] [2022-12-13 17:18:49,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478169693] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:18:49,283 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 17:18:49,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 32 [2022-12-13 17:18:49,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028377701] [2022-12-13 17:18:49,283 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 17:18:49,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-13 17:18:49,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:18:49,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-13 17:18:49,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2022-12-13 17:18:49,583 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 586 [2022-12-13 17:18:49,588 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 71 transitions, 561 flow. Second operand has 32 states, 32 states have (on average 257.1875) internal successors, (8230), 32 states have internal predecessors, (8230), 0 states have call successors, (0), 0 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 17:18:49,588 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:18:49,588 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 586 [2022-12-13 17:18:49,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:18:51,971 INFO L130 PetriNetUnfolder]: 201/568 cut-off events. [2022-12-13 17:18:51,971 INFO L131 PetriNetUnfolder]: For 6922/6922 co-relation queries the response was YES. [2022-12-13 17:18:51,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1648 conditions, 568 events. 201/568 cut-off events. For 6922/6922 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1906 event pairs, 160 based on Foata normal form. 24/390 useless extension candidates. Maximal degree in co-relation 1601. Up to 411 conditions per place. [2022-12-13 17:18:51,973 INFO L137 encePairwiseOnDemand]: 582/586 looper letters, 61 selfloop transitions, 39 changer transitions 0/104 dead transitions. [2022-12-13 17:18:51,973 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 104 transitions, 1160 flow [2022-12-13 17:18:51,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-13 17:18:51,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-12-13 17:18:51,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 8291 transitions. [2022-12-13 17:18:51,989 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44213950511945393 [2022-12-13 17:18:51,989 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 8291 transitions. [2022-12-13 17:18:51,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 8291 transitions. [2022-12-13 17:18:51,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:18:51,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 8291 transitions. [2022-12-13 17:18:51,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 259.09375) internal successors, (8291), 32 states have internal predecessors, (8291), 0 states have call successors, (0), 0 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 17:18:52,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 586.0) internal successors, (19338), 33 states have internal predecessors, (19338), 0 states have call successors, (0), 0 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 17:18:52,013 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 586.0) internal successors, (19338), 33 states have internal predecessors, (19338), 0 states have call successors, (0), 0 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 17:18:52,014 INFO L175 Difference]: Start difference. First operand has 107 places, 71 transitions, 561 flow. Second operand 32 states and 8291 transitions. [2022-12-13 17:18:52,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 104 transitions, 1160 flow [2022-12-13 17:18:52,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 104 transitions, 1142 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-13 17:18:52,021 INFO L231 Difference]: Finished difference. Result has 142 places, 80 transitions, 760 flow [2022-12-13 17:18:52,022 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=543, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=760, PETRI_PLACES=142, PETRI_TRANSITIONS=80} [2022-12-13 17:18:52,022 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 101 predicate places. [2022-12-13 17:18:52,022 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 80 transitions, 760 flow [2022-12-13 17:18:52,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 257.1875) internal successors, (8230), 32 states have internal predecessors, (8230), 0 states have call successors, (0), 0 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 17:18:52,023 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:18:52,023 INFO L209 CegarLoopForPetriNet]: trace histogram [62, 3, 2, 1, 1] [2022-12-13 17:18:52,052 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 17:18:52,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 17:18:52,224 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 17:18:52,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:18:52,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1241679862, now seen corresponding path program 5 times [2022-12-13 17:18:52,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:18:52,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816069978] [2022-12-13 17:18:52,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:18:52,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:18:52,726 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:18:52,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1413021565] [2022-12-13 17:18:52,727 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 17:18:52,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:18:52,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:18:52,728 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:18:52,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d4f71c-2ad3-45a2-9fe0-474575cf1cde/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process