./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-mts.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/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_e6134aa6-890c-4b8e-bdeb-c645da1cf711/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-mts.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/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_e6134aa6-890c-4b8e-bdeb-c645da1cf711/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 9d38eb9d6ba70070fe3ced1aec90f1c3400cc1f89786e1bd625a19020cb0869f --- 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 13:28:10,522 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 13:28:10,524 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 13:28:10,543 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 13:28:10,543 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 13:28:10,544 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 13:28:10,545 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 13:28:10,547 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 13:28:10,548 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 13:28:10,549 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 13:28:10,550 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 13:28:10,551 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 13:28:10,552 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 13:28:10,553 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 13:28:10,554 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 13:28:10,555 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 13:28:10,556 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 13:28:10,557 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 13:28:10,558 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 13:28:10,560 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 13:28:10,562 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 13:28:10,563 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 13:28:10,564 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 13:28:10,565 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 13:28:10,568 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 13:28:10,568 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 13:28:10,568 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 13:28:10,569 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 13:28:10,569 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 13:28:10,570 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 13:28:10,570 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 13:28:10,571 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 13:28:10,571 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 13:28:10,572 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 13:28:10,572 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 13:28:10,573 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 13:28:10,573 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 13:28:10,573 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 13:28:10,573 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 13:28:10,574 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 13:28:10,574 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 13:28:10,575 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 13:28:10,590 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 13:28:10,591 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 13:28:10,591 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 13:28:10,591 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 13:28:10,591 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 13:28:10,592 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 13:28:10,592 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 13:28:10,592 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 13:28:10,592 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 13:28:10,592 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 13:28:10,593 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 13:28:10,593 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 13:28:10,593 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 13:28:10,593 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 13:28:10,593 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 13:28:10,593 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 13:28:10,593 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 13:28:10,593 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 13:28:10,593 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 13:28:10,594 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 13:28:10,594 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 13:28:10,594 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 13:28:10,594 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 13:28:10,594 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 13:28:10,594 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 13:28:10,594 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 13:28:10,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:28:10,595 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 13:28:10,595 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 13:28:10,595 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 13:28:10,595 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 13:28:10,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 13:28:10,595 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 13:28:10,595 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 13:28:10,596 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 13:28:10,596 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 13:28:10,596 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 13:28:10,596 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_e6134aa6-890c-4b8e-bdeb-c645da1cf711/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d38eb9d6ba70070fe3ced1aec90f1c3400cc1f89786e1bd625a19020cb0869f [2022-12-13 13:28:10,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 13:28:10,788 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 13:28:10,790 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 13:28:10,791 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 13:28:10,792 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 13:28:10,793 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/popl20-more-mts.wvr.c [2022-12-13 13:28:13,327 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 13:28:13,495 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 13:28:13,496 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/sv-benchmarks/c/weaver/popl20-more-mts.wvr.c [2022-12-13 13:28:13,502 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/bin/uautomizer-uyxdKDjOR8/data/a1ca7e04e/837fb56dabb348589e7b1125b63e082e/FLAG0c5ef8120 [2022-12-13 13:28:13,889 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/bin/uautomizer-uyxdKDjOR8/data/a1ca7e04e/837fb56dabb348589e7b1125b63e082e [2022-12-13 13:28:13,892 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 13:28:13,893 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 13:28:13,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 13:28:13,894 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 13:28:13,897 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 13:28:13,898 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:28:13" (1/1) ... [2022-12-13 13:28:13,899 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37da1ee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:13, skipping insertion in model container [2022-12-13 13:28:13,899 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:28:13" (1/1) ... [2022-12-13 13:28:13,905 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 13:28:13,918 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 13:28:14,035 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:28:14,037 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:28:14,043 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_e6134aa6-890c-4b8e-bdeb-c645da1cf711/sv-benchmarks/c/weaver/popl20-more-mts.wvr.c[2533,2546] [2022-12-13 13:28:14,048 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:28:14,055 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 13:28:14,068 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:28:14,069 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:28:14,073 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_e6134aa6-890c-4b8e-bdeb-c645da1cf711/sv-benchmarks/c/weaver/popl20-more-mts.wvr.c[2533,2546] [2022-12-13 13:28:14,077 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:28:14,087 INFO L208 MainTranslator]: Completed translation [2022-12-13 13:28:14,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:14 WrapperNode [2022-12-13 13:28:14,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 13:28:14,089 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 13:28:14,089 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 13:28:14,089 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 13:28:14,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:14" (1/1) ... [2022-12-13 13:28:14,101 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:14" (1/1) ... [2022-12-13 13:28:14,122 INFO L138 Inliner]: procedures = 25, calls = 46, calls flagged for inlining = 13, calls inlined = 19, statements flattened = 303 [2022-12-13 13:28:14,122 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 13:28:14,123 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 13:28:14,123 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 13:28:14,123 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 13:28:14,130 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:14" (1/1) ... [2022-12-13 13:28:14,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:14" (1/1) ... [2022-12-13 13:28:14,133 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:14" (1/1) ... [2022-12-13 13:28:14,133 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:14" (1/1) ... [2022-12-13 13:28:14,139 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:14" (1/1) ... [2022-12-13 13:28:14,142 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:14" (1/1) ... [2022-12-13 13:28:14,144 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:14" (1/1) ... [2022-12-13 13:28:14,145 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:14" (1/1) ... [2022-12-13 13:28:14,147 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 13:28:14,148 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 13:28:14,148 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 13:28:14,148 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 13:28:14,149 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:14" (1/1) ... [2022-12-13 13:28:14,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:28:14,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:28:14,175 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 13:28:14,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 13:28:14,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 13:28:14,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 13:28:14,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 13:28:14,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 13:28:14,207 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 13:28:14,207 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 13:28:14,207 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 13:28:14,208 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 13:28:14,208 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 13:28:14,208 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 13:28:14,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 13:28:14,208 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 13:28:14,208 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 13:28:14,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 13:28:14,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 13:28:14,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 13:28:14,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 13:28:14,210 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 13:28:14,295 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 13:28:14,296 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 13:28:14,730 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 13:28:15,191 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 13:28:15,192 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 13:28:15,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:28:15 BoogieIcfgContainer [2022-12-13 13:28:15,194 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 13:28:15,195 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 13:28:15,195 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 13:28:15,197 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 13:28:15,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 01:28:13" (1/3) ... [2022-12-13 13:28:15,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a1db51d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:28:15, skipping insertion in model container [2022-12-13 13:28:15,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:14" (2/3) ... [2022-12-13 13:28:15,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a1db51d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:28:15, skipping insertion in model container [2022-12-13 13:28:15,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:28:15" (3/3) ... [2022-12-13 13:28:15,199 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-mts.wvr.c [2022-12-13 13:28:15,206 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 13:28:15,214 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 13:28:15,214 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2022-12-13 13:28:15,214 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 13:28:15,392 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 13:28:15,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 308 places, 321 transitions, 666 flow [2022-12-13 13:28:15,506 INFO L130 PetriNetUnfolder]: 23/318 cut-off events. [2022-12-13 13:28:15,506 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 13:28:15,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331 conditions, 318 events. 23/318 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 788 event pairs, 0 based on Foata normal form. 0/253 useless extension candidates. Maximal degree in co-relation 250. Up to 2 conditions per place. [2022-12-13 13:28:15,512 INFO L82 GeneralOperation]: Start removeDead. Operand has 308 places, 321 transitions, 666 flow [2022-12-13 13:28:15,518 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 283 places, 294 transitions, 606 flow [2022-12-13 13:28:15,520 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 13:28:15,528 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 283 places, 294 transitions, 606 flow [2022-12-13 13:28:15,530 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 283 places, 294 transitions, 606 flow [2022-12-13 13:28:15,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 283 places, 294 transitions, 606 flow [2022-12-13 13:28:15,603 INFO L130 PetriNetUnfolder]: 21/294 cut-off events. [2022-12-13 13:28:15,603 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 13:28:15,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 294 events. 21/294 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 705 event pairs, 0 based on Foata normal form. 0/232 useless extension candidates. Maximal degree in co-relation 250. Up to 2 conditions per place. [2022-12-13 13:28:15,611 INFO L119 LiptonReduction]: Number of co-enabled transitions 24672 [2022-12-13 13:28:46,095 INFO L134 LiptonReduction]: Checked pairs total: 29563 [2022-12-13 13:28:46,095 INFO L136 LiptonReduction]: Total number of compositions: 372 [2022-12-13 13:28:46,110 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:28:46,115 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;@6326931b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 13:28:46,115 INFO L358 AbstractCegarLoop]: Starting to check reachability of 81 error locations. [2022-12-13 13:28:46,117 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 13:28:46,117 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 13:28:46,117 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:28:46,117 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 13:28:46,118 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-12-13 13:28:46,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:28:46,121 INFO L85 PathProgramCache]: Analyzing trace with hash 52640, now seen corresponding path program 1 times [2022-12-13 13:28:46,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:28:46,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494037159] [2022-12-13 13:28:46,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:28:46,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:28:46,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:46,352 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 13:28:46,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:28:46,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494037159] [2022-12-13 13:28:46,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494037159] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:28:46,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:28:46,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 13:28:46,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457607663] [2022-12-13 13:28:46,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:28:46,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:28:46,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:28:46,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:28:46,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:28:46,401 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 284 out of 693 [2022-12-13 13:28:46,405 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 71 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 284.6666666666667) internal successors, (854), 3 states have internal predecessors, (854), 0 states have call successors, (0), 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 13:28:46,405 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:28:46,405 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 284 of 693 [2022-12-13 13:28:46,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:28:54,741 INFO L130 PetriNetUnfolder]: 33955/42747 cut-off events. [2022-12-13 13:28:54,742 INFO L131 PetriNetUnfolder]: For 502/502 co-relation queries the response was YES. [2022-12-13 13:28:54,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86315 conditions, 42747 events. 33955/42747 cut-off events. For 502/502 co-relation queries the response was YES. Maximal size of possible extension queue 4560. Compared 239807 event pairs, 18402 based on Foata normal form. 0/11171 useless extension candidates. Maximal degree in co-relation 40367. Up to 21263 conditions per place. [2022-12-13 13:28:54,931 INFO L137 encePairwiseOnDemand]: 675/693 looper letters, 103 selfloop transitions, 2 changer transitions 0/108 dead transitions. [2022-12-13 13:28:54,931 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 108 transitions, 462 flow [2022-12-13 13:28:54,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:28:54,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:28:54,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 987 transitions. [2022-12-13 13:28:54,944 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47474747474747475 [2022-12-13 13:28:54,945 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 987 transitions. [2022-12-13 13:28:54,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 987 transitions. [2022-12-13 13:28:54,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:28:54,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 987 transitions. [2022-12-13 13:28:54,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 329.0) internal successors, (987), 3 states have internal predecessors, (987), 0 states have call successors, (0), 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 13:28:54,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 693.0) internal successors, (2772), 4 states have internal predecessors, (2772), 0 states have call successors, (0), 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 13:28:54,965 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 693.0) internal successors, (2772), 4 states have internal predecessors, (2772), 0 states have call successors, (0), 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 13:28:54,967 INFO L175 Difference]: Start difference. First operand has 75 places, 71 transitions, 160 flow. Second operand 3 states and 987 transitions. [2022-12-13 13:28:54,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 108 transitions, 462 flow [2022-12-13 13:28:54,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 108 transitions, 438 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-13 13:28:54,997 INFO L231 Difference]: Finished difference. Result has 58 places, 58 transitions, 134 flow [2022-12-13 13:28:54,998 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=693, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=58, PETRI_TRANSITIONS=58} [2022-12-13 13:28:55,001 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, -17 predicate places. [2022-12-13 13:28:55,001 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 58 transitions, 134 flow [2022-12-13 13:28:55,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 284.6666666666667) internal successors, (854), 3 states have internal predecessors, (854), 0 states have call successors, (0), 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 13:28:55,002 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:28:55,002 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 13:28:55,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 13:28:55,002 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-12-13 13:28:55,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:28:55,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1636182, now seen corresponding path program 1 times [2022-12-13 13:28:55,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:28:55,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975829071] [2022-12-13 13:28:55,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:28:55,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:28:55,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:55,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:28:55,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:28:55,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975829071] [2022-12-13 13:28:55,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975829071] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:28:55,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:28:55,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:28:55,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670564986] [2022-12-13 13:28:55,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:28:55,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:28:55,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:28:55,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:28:55,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:28:55,083 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 284 out of 693 [2022-12-13 13:28:55,084 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 58 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 285.0) internal successors, (855), 3 states have internal predecessors, (855), 0 states have call successors, (0), 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 13:28:55,084 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:28:55,084 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 284 of 693 [2022-12-13 13:28:55,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:29:03,344 INFO L130 PetriNetUnfolder]: 33955/42746 cut-off events. [2022-12-13 13:29:03,344 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-12-13 13:29:03,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85641 conditions, 42746 events. 33955/42746 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 4540. Compared 240349 event pairs, 18402 based on Foata normal form. 0/10999 useless extension candidates. Maximal degree in co-relation 42818. Up to 42520 conditions per place. [2022-12-13 13:29:03,491 INFO L137 encePairwiseOnDemand]: 691/693 looper letters, 53 selfloop transitions, 1 changer transitions 0/57 dead transitions. [2022-12-13 13:29:03,491 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 57 transitions, 238 flow [2022-12-13 13:29:03,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:29:03,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:29:03,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 906 transitions. [2022-12-13 13:29:03,494 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4357864357864358 [2022-12-13 13:29:03,494 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 906 transitions. [2022-12-13 13:29:03,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 906 transitions. [2022-12-13 13:29:03,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:29:03,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 906 transitions. [2022-12-13 13:29:03,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 302.0) internal successors, (906), 3 states have internal predecessors, (906), 0 states have call successors, (0), 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 13:29:03,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 693.0) internal successors, (2772), 4 states have internal predecessors, (2772), 0 states have call successors, (0), 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 13:29:03,499 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 693.0) internal successors, (2772), 4 states have internal predecessors, (2772), 0 states have call successors, (0), 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 13:29:03,499 INFO L175 Difference]: Start difference. First operand has 58 places, 58 transitions, 134 flow. Second operand 3 states and 906 transitions. [2022-12-13 13:29:03,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 57 transitions, 238 flow [2022-12-13 13:29:03,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 57 transitions, 236 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 13:29:03,501 INFO L231 Difference]: Finished difference. Result has 58 places, 57 transitions, 130 flow [2022-12-13 13:29:03,501 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=693, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=58, PETRI_TRANSITIONS=57} [2022-12-13 13:29:03,501 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, -17 predicate places. [2022-12-13 13:29:03,501 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 57 transitions, 130 flow [2022-12-13 13:29:03,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 285.0) internal successors, (855), 3 states have internal predecessors, (855), 0 states have call successors, (0), 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 13:29:03,502 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:29:03,502 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 13:29:03,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 13:29:03,502 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-12-13 13:29:03,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:29:03,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1636227, now seen corresponding path program 1 times [2022-12-13 13:29:03,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:29:03,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394851105] [2022-12-13 13:29:03,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:29:03,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:29:03,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:03,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:29:03,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:29:03,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394851105] [2022-12-13 13:29:03,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394851105] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:29:03,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747777665] [2022-12-13 13:29:03,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:29:03,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:29:03,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:29:03,553 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:29:03,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 13:29:03,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:03,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 13:29:03,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:29:03,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:29:03,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:29:03,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:29:03,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747777665] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:29:03,763 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:29:03,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-12-13 13:29:03,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445518447] [2022-12-13 13:29:03,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:29:03,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:29:03,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:29:03,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:29:03,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:29:03,788 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 284 out of 693 [2022-12-13 13:29:03,791 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 57 transitions, 130 flow. Second operand has 7 states, 7 states have (on average 285.14285714285717) internal successors, (1996), 7 states have internal predecessors, (1996), 0 states have call successors, (0), 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 13:29:03,791 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:29:03,791 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 284 of 693 [2022-12-13 13:29:03,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:29:22,269 INFO L130 PetriNetUnfolder]: 84886/106862 cut-off events. [2022-12-13 13:29:22,269 INFO L131 PetriNetUnfolder]: For 65/65 co-relation queries the response was YES. [2022-12-13 13:29:22,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214086 conditions, 106862 events. 84886/106862 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 8903. Compared 649449 event pairs, 46005 based on Foata normal form. 0/28192 useless extension candidates. Maximal degree in co-relation 214078. Up to 21262 conditions per place. [2022-12-13 13:29:22,657 INFO L137 encePairwiseOnDemand]: 690/693 looper letters, 252 selfloop transitions, 5 changer transitions 0/260 dead transitions. [2022-12-13 13:29:22,657 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 260 transitions, 1080 flow [2022-12-13 13:29:22,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 13:29:22,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 13:29:22,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1964 transitions. [2022-12-13 13:29:22,662 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47234247234247234 [2022-12-13 13:29:22,662 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1964 transitions. [2022-12-13 13:29:22,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1964 transitions. [2022-12-13 13:29:22,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:29:22,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1964 transitions. [2022-12-13 13:29:22,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 327.3333333333333) internal successors, (1964), 6 states have internal predecessors, (1964), 0 states have call successors, (0), 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 13:29:22,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 693.0) internal successors, (4851), 7 states have internal predecessors, (4851), 0 states have call successors, (0), 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 13:29:22,673 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 693.0) internal successors, (4851), 7 states have internal predecessors, (4851), 0 states have call successors, (0), 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 13:29:22,673 INFO L175 Difference]: Start difference. First operand has 58 places, 57 transitions, 130 flow. Second operand 6 states and 1964 transitions. [2022-12-13 13:29:22,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 260 transitions, 1080 flow [2022-12-13 13:29:22,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 260 transitions, 1079 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 13:29:22,676 INFO L231 Difference]: Finished difference. Result has 65 places, 60 transitions, 165 flow [2022-12-13 13:29:22,676 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=693, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=165, PETRI_PLACES=65, PETRI_TRANSITIONS=60} [2022-12-13 13:29:22,677 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, -10 predicate places. [2022-12-13 13:29:22,677 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 60 transitions, 165 flow [2022-12-13 13:29:22,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 285.14285714285717) internal successors, (1996), 7 states have internal predecessors, (1996), 0 states have call successors, (0), 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 13:29:22,678 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:29:22,678 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 13:29:22,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 13:29:22,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:29:22,879 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-12-13 13:29:22,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:29:22,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1572675340, now seen corresponding path program 1 times [2022-12-13 13:29:22,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:29:22,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621202409] [2022-12-13 13:29:22,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:29:22,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:29:22,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:22,969 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 13:29:22,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:29:22,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621202409] [2022-12-13 13:29:22,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621202409] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:29:22,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:29:22,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:29:22,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871689200] [2022-12-13 13:29:22,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:29:22,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 13:29:22,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:29:22,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 13:29:22,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:29:23,007 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 693 [2022-12-13 13:29:23,008 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 60 transitions, 165 flow. Second operand has 5 states, 5 states have (on average 279.0) internal successors, (1395), 5 states have internal predecessors, (1395), 0 states have call successors, (0), 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 13:29:23,008 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:29:23,009 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 693 [2022-12-13 13:29:23,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:29:37,073 INFO L130 PetriNetUnfolder]: 60561/78143 cut-off events. [2022-12-13 13:29:37,073 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-12-13 13:29:37,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156593 conditions, 78143 events. 60561/78143 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 7650. Compared 499037 event pairs, 36804 based on Foata normal form. 1/22000 useless extension candidates. Maximal degree in co-relation 156581. Up to 77691 conditions per place. [2022-12-13 13:29:37,393 INFO L137 encePairwiseOnDemand]: 690/693 looper letters, 56 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2022-12-13 13:29:37,393 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 60 transitions, 281 flow [2022-12-13 13:29:37,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:29:37,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:29:37,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 890 transitions. [2022-12-13 13:29:37,396 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4280904280904281 [2022-12-13 13:29:37,396 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 890 transitions. [2022-12-13 13:29:37,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 890 transitions. [2022-12-13 13:29:37,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:29:37,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 890 transitions. [2022-12-13 13:29:37,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 296.6666666666667) internal successors, (890), 3 states have internal predecessors, (890), 0 states have call successors, (0), 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 13:29:37,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 693.0) internal successors, (2772), 4 states have internal predecessors, (2772), 0 states have call successors, (0), 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 13:29:37,401 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 693.0) internal successors, (2772), 4 states have internal predecessors, (2772), 0 states have call successors, (0), 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 13:29:37,401 INFO L175 Difference]: Start difference. First operand has 65 places, 60 transitions, 165 flow. Second operand 3 states and 890 transitions. [2022-12-13 13:29:37,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 60 transitions, 281 flow [2022-12-13 13:29:37,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 60 transitions, 271 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-12-13 13:29:37,402 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 163 flow [2022-12-13 13:29:37,403 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=693, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=163, PETRI_PLACES=67, PETRI_TRANSITIONS=60} [2022-12-13 13:29:37,403 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, -8 predicate places. [2022-12-13 13:29:37,403 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 163 flow [2022-12-13 13:29:37,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 279.0) internal successors, (1395), 5 states have internal predecessors, (1395), 0 states have call successors, (0), 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 13:29:37,404 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:29:37,405 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 13:29:37,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 13:29:37,405 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-12-13 13:29:37,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:29:37,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1503334855, now seen corresponding path program 1 times [2022-12-13 13:29:37,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:29:37,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643350072] [2022-12-13 13:29:37,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:29:37,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:29:37,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:37,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:29:37,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:29:37,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643350072] [2022-12-13 13:29:37,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643350072] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:29:37,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:29:37,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 13:29:37,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066667235] [2022-12-13 13:29:37,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:29:37,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:29:37,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:29:37,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:29:37,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:29:37,496 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 693 [2022-12-13 13:29:37,497 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 286.6666666666667) internal successors, (860), 3 states have internal predecessors, (860), 0 states have call successors, (0), 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 13:29:37,497 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:29:37,497 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 693 [2022-12-13 13:29:37,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:30:04,796 INFO L130 PetriNetUnfolder]: 118437/149823 cut-off events. [2022-12-13 13:30:04,796 INFO L131 PetriNetUnfolder]: For 56/56 co-relation queries the response was YES. [2022-12-13 13:30:05,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300589 conditions, 149823 events. 118437/149823 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 11096. Compared 957255 event pairs, 31688 based on Foata normal form. 0/40543 useless extension candidates. Maximal degree in co-relation 300575. Up to 77745 conditions per place. [2022-12-13 13:30:05,485 INFO L137 encePairwiseOnDemand]: 688/693 looper letters, 100 selfloop transitions, 3 changer transitions 0/106 dead transitions. [2022-12-13 13:30:05,486 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 106 transitions, 466 flow [2022-12-13 13:30:05,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:30:05,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:30:05,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 956 transitions. [2022-12-13 13:30:05,488 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4598364598364598 [2022-12-13 13:30:05,488 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 956 transitions. [2022-12-13 13:30:05,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 956 transitions. [2022-12-13 13:30:05,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:30:05,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 956 transitions. [2022-12-13 13:30:05,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 318.6666666666667) internal successors, (956), 3 states have internal predecessors, (956), 0 states have call successors, (0), 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 13:30:05,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 693.0) internal successors, (2772), 4 states have internal predecessors, (2772), 0 states have call successors, (0), 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 13:30:05,494 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 693.0) internal successors, (2772), 4 states have internal predecessors, (2772), 0 states have call successors, (0), 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 13:30:05,495 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 163 flow. Second operand 3 states and 956 transitions. [2022-12-13 13:30:05,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 106 transitions, 466 flow [2022-12-13 13:30:05,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 106 transitions, 462 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 13:30:05,498 INFO L231 Difference]: Finished difference. Result has 69 places, 62 transitions, 183 flow [2022-12-13 13:30:05,498 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=693, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=183, PETRI_PLACES=69, PETRI_TRANSITIONS=62} [2022-12-13 13:30:05,499 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, -6 predicate places. [2022-12-13 13:30:05,499 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 62 transitions, 183 flow [2022-12-13 13:30:05,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 286.6666666666667) internal successors, (860), 3 states have internal predecessors, (860), 0 states have call successors, (0), 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 13:30:05,500 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:30:05,500 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 13:30:05,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 13:30:05,500 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-12-13 13:30:05,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:30:05,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1503334806, now seen corresponding path program 1 times [2022-12-13 13:30:05,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:30:05,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761754740] [2022-12-13 13:30:05,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:30:05,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:30:05,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:30:05,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:30:05,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:30:05,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761754740] [2022-12-13 13:30:05,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761754740] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:30:05,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728104916] [2022-12-13 13:30:05,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:30:05,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:30:05,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:30:05,751 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:30:05,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 13:30:05,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:30:05,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-13 13:30:05,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:30:05,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 13:30:05,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:30:05,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 13:30:06,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:30:06,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:30:06,032 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_143 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_143) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 9223372039002259456))) is different from false [2022-12-13 13:30:06,048 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:30:06,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2022-12-13 13:30:06,057 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:30:06,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 37 [2022-12-13 13:30:06,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-12-13 13:30:06,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-12-13 13:30:06,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728104916] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:30:06,091 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:30:06,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2022-12-13 13:30:06,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779692896] [2022-12-13 13:30:06,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:30:06,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 13:30:06,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:30:06,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 13:30:06,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=84, Unknown=1, NotChecked=18, Total=132 [2022-12-13 13:30:06,156 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 693 [2022-12-13 13:30:06,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 62 transitions, 183 flow. Second operand has 12 states, 12 states have (on average 256.25) internal successors, (3075), 12 states have internal predecessors, (3075), 0 states have call successors, (0), 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 13:30:06,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:30:06,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 693 [2022-12-13 13:30:06,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:30:49,341 INFO L130 PetriNetUnfolder]: 177989/229439 cut-off events. [2022-12-13 13:30:49,341 INFO L131 PetriNetUnfolder]: For 12424/12424 co-relation queries the response was YES. [2022-12-13 13:30:49,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473802 conditions, 229439 events. 177989/229439 cut-off events. For 12424/12424 co-relation queries the response was YES. Maximal size of possible extension queue 17985. Compared 1622476 event pairs, 50904 based on Foata normal form. 0/73139 useless extension candidates. Maximal degree in co-relation 473786. Up to 132169 conditions per place. [2022-12-13 13:30:50,600 INFO L137 encePairwiseOnDemand]: 678/693 looper letters, 97 selfloop transitions, 23 changer transitions 0/122 dead transitions. [2022-12-13 13:30:50,600 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 122 transitions, 573 flow [2022-12-13 13:30:50,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 13:30:50,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 13:30:50,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2155 transitions. [2022-12-13 13:30:50,607 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3887085137085137 [2022-12-13 13:30:50,607 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2155 transitions. [2022-12-13 13:30:50,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2155 transitions. [2022-12-13 13:30:50,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:30:50,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2155 transitions. [2022-12-13 13:30:50,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 269.375) internal successors, (2155), 8 states have internal predecessors, (2155), 0 states have call successors, (0), 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 13:30:50,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 693.0) internal successors, (6237), 9 states have internal predecessors, (6237), 0 states have call successors, (0), 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 13:30:50,624 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 693.0) internal successors, (6237), 9 states have internal predecessors, (6237), 0 states have call successors, (0), 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 13:30:50,624 INFO L175 Difference]: Start difference. First operand has 69 places, 62 transitions, 183 flow. Second operand 8 states and 2155 transitions. [2022-12-13 13:30:50,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 122 transitions, 573 flow [2022-12-13 13:30:51,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 122 transitions, 559 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 13:30:51,288 INFO L231 Difference]: Finished difference. Result has 77 places, 78 transitions, 305 flow [2022-12-13 13:30:51,288 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=693, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=305, PETRI_PLACES=77, PETRI_TRANSITIONS=78} [2022-12-13 13:30:51,289 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, 2 predicate places. [2022-12-13 13:30:51,289 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 78 transitions, 305 flow [2022-12-13 13:30:51,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 256.25) internal successors, (3075), 12 states have internal predecessors, (3075), 0 states have call successors, (0), 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 13:30:51,289 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:30:51,290 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 13:30:51,296 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 13:30:51,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:30:51,490 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-12-13 13:30:51,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:30:51,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1503334854, now seen corresponding path program 1 times [2022-12-13 13:30:51,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:30:51,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956654576] [2022-12-13 13:30:51,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:30:51,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:30:51,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:30:51,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:30:51,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:30:51,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956654576] [2022-12-13 13:30:51,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956654576] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:30:51,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289804761] [2022-12-13 13:30:51,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:30:51,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:30:51,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:30:51,721 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:30:51,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 13:30:51,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:30:51,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-13 13:30:51,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:30:51,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 13:30:51,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:30:51,916 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 13:30:51,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:30:51,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:30:51,961 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_182 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_182) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 4294967296)) is different from false [2022-12-13 13:30:51,973 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:30:51,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2022-12-13 13:30:51,979 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:30:51,980 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 31 [2022-12-13 13:30:51,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-13 13:30:52,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-12-13 13:30:52,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289804761] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:30:52,002 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:30:52,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2022-12-13 13:30:52,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89756667] [2022-12-13 13:30:52,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:30:52,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 13:30:52,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:30:52,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 13:30:52,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=84, Unknown=1, NotChecked=18, Total=132 [2022-12-13 13:30:52,049 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 693 [2022-12-13 13:30:52,052 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 78 transitions, 305 flow. Second operand has 12 states, 12 states have (on average 256.25) internal successors, (3075), 12 states have internal predecessors, (3075), 0 states have call successors, (0), 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 13:30:52,052 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:30:52,052 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 693 [2022-12-13 13:30:52,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:31:36,957 INFO L130 PetriNetUnfolder]: 181177/235127 cut-off events. [2022-12-13 13:31:36,957 INFO L131 PetriNetUnfolder]: For 39402/39402 co-relation queries the response was YES. [2022-12-13 13:31:37,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 515014 conditions, 235127 events. 181177/235127 cut-off events. For 39402/39402 co-relation queries the response was YES. Maximal size of possible extension queue 18685. Compared 1691892 event pairs, 81868 based on Foata normal form. 0/83819 useless extension candidates. Maximal degree in co-relation 514995. Up to 191669 conditions per place. [2022-12-13 13:31:38,262 INFO L137 encePairwiseOnDemand]: 681/693 looper letters, 99 selfloop transitions, 24 changer transitions 0/125 dead transitions. [2022-12-13 13:31:38,262 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 125 transitions, 681 flow [2022-12-13 13:31:38,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 13:31:38,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 13:31:38,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2152 transitions. [2022-12-13 13:31:38,267 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.38816738816738816 [2022-12-13 13:31:38,267 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2152 transitions. [2022-12-13 13:31:38,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2152 transitions. [2022-12-13 13:31:38,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:31:38,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2152 transitions. [2022-12-13 13:31:38,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 269.0) internal successors, (2152), 8 states have internal predecessors, (2152), 0 states have call successors, (0), 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 13:31:38,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 693.0) internal successors, (6237), 9 states have internal predecessors, (6237), 0 states have call successors, (0), 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 13:31:38,277 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 693.0) internal successors, (6237), 9 states have internal predecessors, (6237), 0 states have call successors, (0), 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 13:31:38,277 INFO L175 Difference]: Start difference. First operand has 77 places, 78 transitions, 305 flow. Second operand 8 states and 2152 transitions. [2022-12-13 13:31:38,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 125 transitions, 681 flow [2022-12-13 13:31:38,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 125 transitions, 675 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-13 13:31:38,320 INFO L231 Difference]: Finished difference. Result has 84 places, 84 transitions, 399 flow [2022-12-13 13:31:38,321 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=693, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=399, PETRI_PLACES=84, PETRI_TRANSITIONS=84} [2022-12-13 13:31:38,321 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, 9 predicate places. [2022-12-13 13:31:38,321 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 84 transitions, 399 flow [2022-12-13 13:31:38,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 256.25) internal successors, (3075), 12 states have internal predecessors, (3075), 0 states have call successors, (0), 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 13:31:38,323 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:31:38,323 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-12-13 13:31:38,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-13 13:31:38,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-13 13:31:38,524 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-12-13 13:31:38,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:31:38,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1503169357, now seen corresponding path program 2 times [2022-12-13 13:31:38,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:31:38,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076386165] [2022-12-13 13:31:38,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:31:38,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:31:38,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:31:38,626 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:31:38,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:31:38,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076386165] [2022-12-13 13:31:38,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076386165] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:31:38,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130589298] [2022-12-13 13:31:38,626 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 13:31:38,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:31:38,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:31:38,628 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:31:38,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 13:31:38,760 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 13:31:38,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:31:38,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 13:31:38,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:31:38,770 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 13:31:38,770 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:31:38,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130589298] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:31:38,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:31:38,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-12-13 13:31:38,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833155599] [2022-12-13 13:31:38,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:31:38,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:31:38,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:31:38,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:31:38,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 13:31:38,779 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 693 [2022-12-13 13:31:38,780 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 84 transitions, 399 flow. Second operand has 3 states, 3 states have (on average 286.0) internal successors, (858), 3 states have internal predecessors, (858), 0 states have call successors, (0), 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 13:31:38,780 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:31:38,780 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 693 [2022-12-13 13:31:38,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:32:23,351 INFO L130 PetriNetUnfolder]: 183245/237194 cut-off events. [2022-12-13 13:32:23,352 INFO L131 PetriNetUnfolder]: For 110522/110522 co-relation queries the response was YES. [2022-12-13 13:32:24,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 539598 conditions, 237194 events. 183245/237194 cut-off events. For 110522/110522 co-relation queries the response was YES. Maximal size of possible extension queue 19154. Compared 1690863 event pairs, 103224 based on Foata normal form. 1/86959 useless extension candidates. Maximal degree in co-relation 539577. Up to 235834 conditions per place. [2022-12-13 13:32:24,754 INFO L137 encePairwiseOnDemand]: 691/693 looper letters, 78 selfloop transitions, 1 changer transitions 0/83 dead transitions. [2022-12-13 13:32:24,754 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 83 transitions, 547 flow [2022-12-13 13:32:24,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:32:24,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:32:24,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 908 transitions. [2022-12-13 13:32:24,756 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4367484367484368 [2022-12-13 13:32:24,756 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 908 transitions. [2022-12-13 13:32:24,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 908 transitions. [2022-12-13 13:32:24,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:32:24,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 908 transitions. [2022-12-13 13:32:24,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 302.6666666666667) internal successors, (908), 3 states have internal predecessors, (908), 0 states have call successors, (0), 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 13:32:24,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 693.0) internal successors, (2772), 4 states have internal predecessors, (2772), 0 states have call successors, (0), 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 13:32:24,761 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 693.0) internal successors, (2772), 4 states have internal predecessors, (2772), 0 states have call successors, (0), 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 13:32:24,761 INFO L175 Difference]: Start difference. First operand has 84 places, 84 transitions, 399 flow. Second operand 3 states and 908 transitions. [2022-12-13 13:32:24,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 83 transitions, 547 flow [2022-12-13 13:32:24,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 83 transitions, 530 flow, removed 1 selfloop flow, removed 7 redundant places. [2022-12-13 13:32:24,820 INFO L231 Difference]: Finished difference. Result has 78 places, 83 transitions, 374 flow [2022-12-13 13:32:24,820 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=693, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=374, PETRI_PLACES=78, PETRI_TRANSITIONS=83} [2022-12-13 13:32:24,821 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, 3 predicate places. [2022-12-13 13:32:24,821 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 83 transitions, 374 flow [2022-12-13 13:32:24,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 286.0) internal successors, (858), 3 states have internal predecessors, (858), 0 states have call successors, (0), 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 13:32:24,821 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:32:24,821 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:32:24,827 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 13:32:25,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:32:25,023 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-12-13 13:32:25,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:32:25,025 INFO L85 PathProgramCache]: Analyzing trace with hash -640827655, now seen corresponding path program 1 times [2022-12-13 13:32:25,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:32:25,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267641875] [2022-12-13 13:32:25,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:32:25,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:32:25,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:32:25,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:32:25,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:32:25,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267641875] [2022-12-13 13:32:25,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267641875] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:32:25,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110596230] [2022-12-13 13:32:25,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:32:25,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:32:25,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:32:25,233 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:32:25,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 13:32:25,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:32:25,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-13 13:32:25,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:32:25,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 13:32:25,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:32:25,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 13:32:25,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:32:25,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 13:32:25,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:32:25,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:32:25,537 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_274 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_274) c_~A~0.base) c_~A~0.offset) 9223372039002259456))) is different from false [2022-12-13 13:32:25,590 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:32:25,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2022-12-13 13:32:25,597 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:32:25,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 143 treesize of output 137 [2022-12-13 13:32:25,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 114 [2022-12-13 13:32:25,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 110 [2022-12-13 13:32:25,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:32:25,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110596230] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:32:25,659 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:32:25,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2022-12-13 13:32:25,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758883245] [2022-12-13 13:32:25,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:32:25,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 13:32:25,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:32:25,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 13:32:25,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=141, Unknown=3, NotChecked=24, Total=210 [2022-12-13 13:32:25,764 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 693 [2022-12-13 13:32:25,767 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 83 transitions, 374 flow. Second operand has 15 states, 15 states have (on average 253.26666666666668) internal successors, (3799), 15 states have internal predecessors, (3799), 0 states have call successors, (0), 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 13:32:25,768 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:32:25,768 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 693 [2022-12-13 13:32:25,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:33:13,052 INFO L130 PetriNetUnfolder]: 183961/238638 cut-off events. [2022-12-13 13:33:13,053 INFO L131 PetriNetUnfolder]: For 74112/74112 co-relation queries the response was YES. [2022-12-13 13:33:13,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 538037 conditions, 238638 events. 183961/238638 cut-off events. For 74112/74112 co-relation queries the response was YES. Maximal size of possible extension queue 18556. Compared 1705090 event pairs, 22952 based on Foata normal form. 276/85678 useless extension candidates. Maximal degree in co-relation 538019. Up to 136857 conditions per place. [2022-12-13 13:33:14,296 INFO L137 encePairwiseOnDemand]: 679/693 looper letters, 143 selfloop transitions, 42 changer transitions 0/187 dead transitions. [2022-12-13 13:33:14,297 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 187 transitions, 1077 flow [2022-12-13 13:33:14,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 13:33:14,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 13:33:14,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2171 transitions. [2022-12-13 13:33:14,301 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3915945165945166 [2022-12-13 13:33:14,302 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2171 transitions. [2022-12-13 13:33:14,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2171 transitions. [2022-12-13 13:33:14,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:33:14,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2171 transitions. [2022-12-13 13:33:14,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 271.375) internal successors, (2171), 8 states have internal predecessors, (2171), 0 states have call successors, (0), 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 13:33:14,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 693.0) internal successors, (6237), 9 states have internal predecessors, (6237), 0 states have call successors, (0), 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 13:33:14,311 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 693.0) internal successors, (6237), 9 states have internal predecessors, (6237), 0 states have call successors, (0), 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 13:33:14,311 INFO L175 Difference]: Start difference. First operand has 78 places, 83 transitions, 374 flow. Second operand 8 states and 2171 transitions. [2022-12-13 13:33:14,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 187 transitions, 1077 flow [2022-12-13 13:33:14,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 187 transitions, 1076 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 13:33:14,403 INFO L231 Difference]: Finished difference. Result has 86 places, 103 transitions, 647 flow [2022-12-13 13:33:14,403 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=693, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=647, PETRI_PLACES=86, PETRI_TRANSITIONS=103} [2022-12-13 13:33:14,403 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, 11 predicate places. [2022-12-13 13:33:14,403 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 103 transitions, 647 flow [2022-12-13 13:33:14,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 253.26666666666668) internal successors, (3799), 15 states have internal predecessors, (3799), 0 states have call successors, (0), 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 13:33:14,404 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:33:14,404 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:33:14,410 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 13:33:14,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:33:14,606 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-12-13 13:33:14,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:33:14,607 INFO L85 PathProgramCache]: Analyzing trace with hash -640827607, now seen corresponding path program 1 times [2022-12-13 13:33:14,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:33:14,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203468937] [2022-12-13 13:33:14,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:33:14,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:33:14,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:33:14,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:33:14,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:33:14,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203468937] [2022-12-13 13:33:14,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203468937] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:33:14,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853030926] [2022-12-13 13:33:14,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:33:14,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:33:14,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:33:14,794 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:33:14,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 13:33:14,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:33:14,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-13 13:33:14,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:33:15,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 13:33:15,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:33:15,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 13:33:15,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:33:15,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 13:33:15,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:33:15,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:33:15,158 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:33:15,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2022-12-13 13:33:15,163 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:33:15,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 61 [2022-12-13 13:33:15,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 44 [2022-12-13 13:33:15,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2022-12-13 13:33:15,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:33:15,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853030926] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:33:15,212 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:33:15,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2022-12-13 13:33:15,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644579749] [2022-12-13 13:33:15,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:33:15,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 13:33:15,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:33:15,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 13:33:15,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=159, Unknown=6, NotChecked=0, Total=210 [2022-12-13 13:33:15,559 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 693 [2022-12-13 13:33:15,561 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 103 transitions, 647 flow. Second operand has 15 states, 15 states have (on average 269.26666666666665) internal successors, (4039), 15 states have internal predecessors, (4039), 0 states have call successors, (0), 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 13:33:15,561 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:33:15,561 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 693 [2022-12-13 13:33:15,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:34:04,197 INFO L130 PetriNetUnfolder]: 185469/240090 cut-off events. [2022-12-13 13:34:04,197 INFO L131 PetriNetUnfolder]: For 137269/137269 co-relation queries the response was YES. [2022-12-13 13:34:04,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 573961 conditions, 240090 events. 185469/240090 cut-off events. For 137269/137269 co-relation queries the response was YES. Maximal size of possible extension queue 19042. Compared 1707752 event pairs, 58744 based on Foata normal form. 0/85810 useless extension candidates. Maximal degree in co-relation 573940. Up to 191373 conditions per place. [2022-12-13 13:34:05,576 INFO L137 encePairwiseOnDemand]: 682/693 looper letters, 147 selfloop transitions, 38 changer transitions 0/187 dead transitions. [2022-12-13 13:34:05,577 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 187 transitions, 1238 flow [2022-12-13 13:34:05,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 13:34:05,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 13:34:05,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2296 transitions. [2022-12-13 13:34:05,583 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41414141414141414 [2022-12-13 13:34:05,583 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2296 transitions. [2022-12-13 13:34:05,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2296 transitions. [2022-12-13 13:34:05,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:34:05,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2296 transitions. [2022-12-13 13:34:05,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 287.0) internal successors, (2296), 8 states have internal predecessors, (2296), 0 states have call successors, (0), 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 13:34:05,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 693.0) internal successors, (6237), 9 states have internal predecessors, (6237), 0 states have call successors, (0), 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 13:34:05,595 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 693.0) internal successors, (6237), 9 states have internal predecessors, (6237), 0 states have call successors, (0), 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 13:34:05,595 INFO L175 Difference]: Start difference. First operand has 86 places, 103 transitions, 647 flow. Second operand 8 states and 2296 transitions. [2022-12-13 13:34:05,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 187 transitions, 1238 flow [2022-12-13 13:34:05,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 187 transitions, 1224 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-12-13 13:34:05,736 INFO L231 Difference]: Finished difference. Result has 92 places, 106 transitions, 754 flow [2022-12-13 13:34:05,736 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=693, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=754, PETRI_PLACES=92, PETRI_TRANSITIONS=106} [2022-12-13 13:34:05,737 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, 17 predicate places. [2022-12-13 13:34:05,737 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 106 transitions, 754 flow [2022-12-13 13:34:05,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 269.26666666666665) internal successors, (4039), 15 states have internal predecessors, (4039), 0 states have call successors, (0), 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 13:34:05,737 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:34:05,737 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:34:05,742 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 13:34:05,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 13:34:05,939 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-12-13 13:34:05,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:34:05,940 INFO L85 PathProgramCache]: Analyzing trace with hash -641258661, now seen corresponding path program 1 times [2022-12-13 13:34:05,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:34:05,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087674754] [2022-12-13 13:34:05,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:34:05,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:34:05,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:34:06,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:34:06,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:34:06,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087674754] [2022-12-13 13:34:06,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087674754] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:34:06,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:34:06,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:34:06,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210898569] [2022-12-13 13:34:06,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:34:06,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:34:06,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:34:06,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:34:06,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:34:06,181 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 693 [2022-12-13 13:34:06,182 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 106 transitions, 754 flow. Second operand has 4 states, 4 states have (on average 271.75) internal successors, (1087), 4 states have internal predecessors, (1087), 0 states have call successors, (0), 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 13:34:06,182 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:34:06,182 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 693 [2022-12-13 13:34:06,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:34:57,780 INFO L130 PetriNetUnfolder]: 193573/250646 cut-off events. [2022-12-13 13:34:57,780 INFO L131 PetriNetUnfolder]: For 174385/174385 co-relation queries the response was YES. [2022-12-13 13:34:58,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 616487 conditions, 250646 events. 193573/250646 cut-off events. For 174385/174385 co-relation queries the response was YES. Maximal size of possible extension queue 19014. Compared 1792385 event pairs, 55252 based on Foata normal form. 0/91046 useless extension candidates. Maximal degree in co-relation 616464. Up to 125129 conditions per place. [2022-12-13 13:34:59,255 INFO L137 encePairwiseOnDemand]: 683/693 looper letters, 168 selfloop transitions, 36 changer transitions 0/206 dead transitions. [2022-12-13 13:34:59,255 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 206 transitions, 1627 flow [2022-12-13 13:34:59,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:34:59,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 13:34:59,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1213 transitions. [2022-12-13 13:34:59,258 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4375901875901876 [2022-12-13 13:34:59,259 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1213 transitions. [2022-12-13 13:34:59,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1213 transitions. [2022-12-13 13:34:59,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:34:59,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1213 transitions. [2022-12-13 13:34:59,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 303.25) internal successors, (1213), 4 states have internal predecessors, (1213), 0 states have call successors, (0), 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 13:34:59,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 693.0) internal successors, (3465), 5 states have internal predecessors, (3465), 0 states have call successors, (0), 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 13:34:59,263 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 693.0) internal successors, (3465), 5 states have internal predecessors, (3465), 0 states have call successors, (0), 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 13:34:59,263 INFO L175 Difference]: Start difference. First operand has 92 places, 106 transitions, 754 flow. Second operand 4 states and 1213 transitions. [2022-12-13 13:34:59,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 206 transitions, 1627 flow [2022-12-13 13:34:59,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 206 transitions, 1610 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 13:34:59,771 INFO L231 Difference]: Finished difference. Result has 94 places, 128 transitions, 1131 flow [2022-12-13 13:34:59,771 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=693, PETRI_DIFFERENCE_MINUEND_FLOW=741, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1131, PETRI_PLACES=94, PETRI_TRANSITIONS=128} [2022-12-13 13:34:59,771 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, 19 predicate places. [2022-12-13 13:34:59,771 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 128 transitions, 1131 flow [2022-12-13 13:34:59,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 271.75) internal successors, (1087), 4 states have internal predecessors, (1087), 0 states have call successors, (0), 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 13:34:59,772 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:34:59,772 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:34:59,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 13:34:59,772 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-12-13 13:34:59,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:34:59,772 INFO L85 PathProgramCache]: Analyzing trace with hash -641258660, now seen corresponding path program 1 times [2022-12-13 13:34:59,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:34:59,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128112156] [2022-12-13 13:34:59,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:34:59,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:34:59,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:34:59,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:34:59,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:34:59,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128112156] [2022-12-13 13:34:59,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128112156] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:34:59,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:34:59,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:34:59,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725885768] [2022-12-13 13:34:59,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:34:59,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:34:59,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:34:59,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:34:59,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:34:59,942 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 693 [2022-12-13 13:34:59,943 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 128 transitions, 1131 flow. Second operand has 4 states, 4 states have (on average 275.75) internal successors, (1103), 4 states have internal predecessors, (1103), 0 states have call successors, (0), 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 13:34:59,943 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:34:59,943 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 693 [2022-12-13 13:34:59,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:35:50,844 INFO L130 PetriNetUnfolder]: 189205/244962 cut-off events. [2022-12-13 13:35:50,844 INFO L131 PetriNetUnfolder]: For 296812/296812 co-relation queries the response was YES. [2022-12-13 13:35:51,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 633745 conditions, 244962 events. 189205/244962 cut-off events. For 296812/296812 co-relation queries the response was YES. Maximal size of possible extension queue 18267. Compared 1744031 event pairs, 56504 based on Foata normal form. 1316/94694 useless extension candidates. Maximal degree in co-relation 633719. Up to 125161 conditions per place. [2022-12-13 13:35:52,429 INFO L137 encePairwiseOnDemand]: 683/693 looper letters, 167 selfloop transitions, 36 changer transitions 0/205 dead transitions. [2022-12-13 13:35:52,429 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 205 transitions, 1796 flow [2022-12-13 13:35:52,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:35:52,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 13:35:52,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1228 transitions. [2022-12-13 13:35:52,432 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.443001443001443 [2022-12-13 13:35:52,432 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1228 transitions. [2022-12-13 13:35:52,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1228 transitions. [2022-12-13 13:35:52,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:35:52,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1228 transitions. [2022-12-13 13:35:52,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 0 states have call successors, (0), 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 13:35:52,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 693.0) internal successors, (3465), 5 states have internal predecessors, (3465), 0 states have call successors, (0), 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 13:35:52,436 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 693.0) internal successors, (3465), 5 states have internal predecessors, (3465), 0 states have call successors, (0), 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 13:35:52,437 INFO L175 Difference]: Start difference. First operand has 94 places, 128 transitions, 1131 flow. Second operand 4 states and 1228 transitions. [2022-12-13 13:35:52,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 205 transitions, 1796 flow [2022-12-13 13:35:55,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 205 transitions, 1774 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-12-13 13:35:55,021 INFO L231 Difference]: Finished difference. Result has 96 places, 128 transitions, 1214 flow [2022-12-13 13:35:55,022 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=693, PETRI_DIFFERENCE_MINUEND_FLOW=1109, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1214, PETRI_PLACES=96, PETRI_TRANSITIONS=128} [2022-12-13 13:35:55,022 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, 21 predicate places. [2022-12-13 13:35:55,022 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 128 transitions, 1214 flow [2022-12-13 13:35:55,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 275.75) internal successors, (1103), 4 states have internal predecessors, (1103), 0 states have call successors, (0), 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 13:35:55,022 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:35:55,022 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:35:55,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 13:35:55,022 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-12-13 13:35:55,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:35:55,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1609341273, now seen corresponding path program 1 times [2022-12-13 13:35:55,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:35:55,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407615317] [2022-12-13 13:35:55,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:35:55,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:35:55,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:35:55,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:35:55,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:35:55,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407615317] [2022-12-13 13:35:55,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407615317] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:35:55,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709694075] [2022-12-13 13:35:55,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:35:55,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:35:55,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:35:55,103 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:35:55,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 13:35:55,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:35:55,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 13:35:55,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:35:55,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:35:55,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:35:55,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:35:55,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709694075] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:35:55,338 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:35:55,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2022-12-13 13:35:55,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858178343] [2022-12-13 13:35:55,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:35:55,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 13:35:55,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:35:55,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 13:35:55,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-12-13 13:35:55,573 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 693 [2022-12-13 13:35:55,575 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 128 transitions, 1214 flow. Second operand has 13 states, 13 states have (on average 274.61538461538464) internal successors, (3570), 13 states have internal predecessors, (3570), 0 states have call successors, (0), 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 13:35:55,575 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:35:55,575 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 693 [2022-12-13 13:35:55,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:36:35,191 INFO L130 PetriNetUnfolder]: 132397/177531 cut-off events. [2022-12-13 13:36:35,191 INFO L131 PetriNetUnfolder]: For 310536/310545 co-relation queries the response was YES. [2022-12-13 13:36:35,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 481977 conditions, 177531 events. 132397/177531 cut-off events. For 310536/310545 co-relation queries the response was YES. Maximal size of possible extension queue 14670. Compared 1348543 event pairs, 73719 based on Foata normal form. 9/76633 useless extension candidates. Maximal degree in co-relation 481950. Up to 151676 conditions per place. [2022-12-13 13:36:36,373 INFO L137 encePairwiseOnDemand]: 682/693 looper letters, 364 selfloop transitions, 6 changer transitions 0/374 dead transitions. [2022-12-13 13:36:36,373 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 374 transitions, 4579 flow [2022-12-13 13:36:36,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 13:36:36,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 13:36:36,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2067 transitions. [2022-12-13 13:36:36,377 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4260977118119975 [2022-12-13 13:36:36,377 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2067 transitions. [2022-12-13 13:36:36,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2067 transitions. [2022-12-13 13:36:36,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:36:36,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2067 transitions. [2022-12-13 13:36:36,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 295.2857142857143) internal successors, (2067), 7 states have internal predecessors, (2067), 0 states have call successors, (0), 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 13:36:36,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 693.0) internal successors, (5544), 8 states have internal predecessors, (5544), 0 states have call successors, (0), 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 13:36:36,384 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 693.0) internal successors, (5544), 8 states have internal predecessors, (5544), 0 states have call successors, (0), 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 13:36:36,384 INFO L175 Difference]: Start difference. First operand has 96 places, 128 transitions, 1214 flow. Second operand 7 states and 2067 transitions. [2022-12-13 13:36:36,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 374 transitions, 4579 flow [2022-12-13 13:36:36,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 374 transitions, 4349 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 13:36:36,756 INFO L231 Difference]: Finished difference. Result has 103 places, 131 transitions, 1194 flow [2022-12-13 13:36:36,757 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=693, PETRI_DIFFERENCE_MINUEND_FLOW=1142, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1194, PETRI_PLACES=103, PETRI_TRANSITIONS=131} [2022-12-13 13:36:36,757 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, 28 predicate places. [2022-12-13 13:36:36,757 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 131 transitions, 1194 flow [2022-12-13 13:36:36,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 274.61538461538464) internal successors, (3570), 13 states have internal predecessors, (3570), 0 states have call successors, (0), 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 13:36:36,757 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:36:36,757 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:36:36,762 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 13:36:36,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 13:36:36,959 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-12-13 13:36:36,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:36:36,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1595817684, now seen corresponding path program 1 times [2022-12-13 13:36:36,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:36:36,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930464455] [2022-12-13 13:36:36,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:36:36,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:36:36,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:36:37,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:36:37,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:36:37,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930464455] [2022-12-13 13:36:37,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930464455] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:36:37,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:36:37,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 13:36:37,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991644433] [2022-12-13 13:36:37,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:36:37,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:36:37,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:36:37,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:36:37,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:36:37,386 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 693 [2022-12-13 13:36:37,387 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 131 transitions, 1194 flow. Second operand has 6 states, 6 states have (on average 267.3333333333333) internal successors, (1604), 6 states have internal predecessors, (1604), 0 states have call successors, (0), 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 13:36:37,387 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:36:37,387 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 693 [2022-12-13 13:36:37,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:37:33,586 INFO L130 PetriNetUnfolder]: 204886/266681 cut-off events. [2022-12-13 13:37:33,586 INFO L131 PetriNetUnfolder]: For 354483/355912 co-relation queries the response was YES. [2022-12-13 13:37:34,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 767689 conditions, 266681 events. 204886/266681 cut-off events. For 354483/355912 co-relation queries the response was YES. Maximal size of possible extension queue 17525. Compared 1922803 event pairs, 58628 based on Foata normal form. 1513/114068 useless extension candidates. Maximal degree in co-relation 767658. Up to 184050 conditions per place. [2022-12-13 13:37:35,515 INFO L137 encePairwiseOnDemand]: 683/693 looper letters, 195 selfloop transitions, 37 changer transitions 0/235 dead transitions. [2022-12-13 13:37:35,515 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 235 transitions, 2293 flow [2022-12-13 13:37:35,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:37:35,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 13:37:35,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1197 transitions. [2022-12-13 13:37:35,518 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2022-12-13 13:37:35,518 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1197 transitions. [2022-12-13 13:37:35,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1197 transitions. [2022-12-13 13:37:35,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:37:35,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1197 transitions. [2022-12-13 13:37:35,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 299.25) internal successors, (1197), 4 states have internal predecessors, (1197), 0 states have call successors, (0), 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 13:37:35,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 693.0) internal successors, (3465), 5 states have internal predecessors, (3465), 0 states have call successors, (0), 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 13:37:35,523 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 693.0) internal successors, (3465), 5 states have internal predecessors, (3465), 0 states have call successors, (0), 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 13:37:35,523 INFO L175 Difference]: Start difference. First operand has 103 places, 131 transitions, 1194 flow. Second operand 4 states and 1197 transitions. [2022-12-13 13:37:35,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 235 transitions, 2293 flow [2022-12-13 13:37:36,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 235 transitions, 2287 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-13 13:37:36,267 INFO L231 Difference]: Finished difference. Result has 106 places, 159 transitions, 1752 flow [2022-12-13 13:37:36,267 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=693, PETRI_DIFFERENCE_MINUEND_FLOW=1188, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1752, PETRI_PLACES=106, PETRI_TRANSITIONS=159} [2022-12-13 13:37:36,268 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, 31 predicate places. [2022-12-13 13:37:36,268 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 159 transitions, 1752 flow [2022-12-13 13:37:36,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 267.3333333333333) internal successors, (1604), 6 states have internal predecessors, (1604), 0 states have call successors, (0), 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 13:37:36,268 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:37:36,268 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:37:36,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 13:37:36,268 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-12-13 13:37:36,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:37:36,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1595830362, now seen corresponding path program 1 times [2022-12-13 13:37:36,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:37:36,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100664380] [2022-12-13 13:37:36,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:37:36,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:37:36,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:37:36,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:37:36,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:37:36,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100664380] [2022-12-13 13:37:36,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100664380] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:37:36,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816650676] [2022-12-13 13:37:36,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:37:36,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:37:36,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:37:36,331 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:37:36,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 13:37:36,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:37:36,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 13:37:36,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:37:36,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:37:36,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:37:36,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:37:36,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816650676] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:37:36,606 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:37:36,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2022-12-13 13:37:36,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465521611] [2022-12-13 13:37:36,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:37:36,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 13:37:36,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:37:36,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 13:37:36,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2022-12-13 13:37:36,743 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 693 [2022-12-13 13:37:36,745 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 159 transitions, 1752 flow. Second operand has 14 states, 14 states have (on average 276.5) internal successors, (3871), 14 states have internal predecessors, (3871), 0 states have call successors, (0), 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 13:37:36,746 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:37:36,746 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 693 [2022-12-13 13:37:36,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:38:32,635 INFO L130 PetriNetUnfolder]: 202474/262089 cut-off events. [2022-12-13 13:38:32,635 INFO L131 PetriNetUnfolder]: For 494265/494701 co-relation queries the response was YES. [2022-12-13 13:38:33,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 783274 conditions, 262089 events. 202474/262089 cut-off events. For 494265/494701 co-relation queries the response was YES. Maximal size of possible extension queue 17418. Compared 1868271 event pairs, 100141 based on Foata normal form. 914/110136 useless extension candidates. Maximal degree in co-relation 783240. Up to 232742 conditions per place. [2022-12-13 13:38:34,636 INFO L137 encePairwiseOnDemand]: 678/693 looper letters, 275 selfloop transitions, 18 changer transitions 0/296 dead transitions. [2022-12-13 13:38:34,636 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 296 transitions, 3082 flow [2022-12-13 13:38:34,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 13:38:34,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 13:38:34,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2657 transitions. [2022-12-13 13:38:34,642 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42600609267275935 [2022-12-13 13:38:34,642 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2657 transitions. [2022-12-13 13:38:34,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2657 transitions. [2022-12-13 13:38:34,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:38:34,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2657 transitions. [2022-12-13 13:38:34,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 295.22222222222223) internal successors, (2657), 9 states have internal predecessors, (2657), 0 states have call successors, (0), 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 13:38:34,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 693.0) internal successors, (6930), 10 states have internal predecessors, (6930), 0 states have call successors, (0), 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 13:38:34,651 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 693.0) internal successors, (6930), 10 states have internal predecessors, (6930), 0 states have call successors, (0), 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 13:38:34,651 INFO L175 Difference]: Start difference. First operand has 106 places, 159 transitions, 1752 flow. Second operand 9 states and 2657 transitions. [2022-12-13 13:38:34,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 296 transitions, 3082 flow [2022-12-13 13:38:36,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 296 transitions, 3078 flow, removed 2 selfloop flow, removed 0 redundant places. [2022-12-13 13:38:36,728 INFO L231 Difference]: Finished difference. Result has 118 places, 173 transitions, 2067 flow [2022-12-13 13:38:36,728 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=693, PETRI_DIFFERENCE_MINUEND_FLOW=1750, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2067, PETRI_PLACES=118, PETRI_TRANSITIONS=173} [2022-12-13 13:38:36,728 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, 43 predicate places. [2022-12-13 13:38:36,728 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 173 transitions, 2067 flow [2022-12-13 13:38:36,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 276.5) internal successors, (3871), 14 states have internal predecessors, (3871), 0 states have call successors, (0), 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 13:38:36,729 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:38:36,729 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:38:36,733 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 13:38:36,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 13:38:36,930 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-12-13 13:38:36,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:38:36,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1595817685, now seen corresponding path program 1 times [2022-12-13 13:38:36,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:38:36,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815859247] [2022-12-13 13:38:36,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:38:36,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:38:36,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:37,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:38:37,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:38:37,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815859247] [2022-12-13 13:38:37,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815859247] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:38:37,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:38:37,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 13:38:37,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209253578] [2022-12-13 13:38:37,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:38:37,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:38:37,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:38:37,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:38:37,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:38:37,291 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 693 [2022-12-13 13:38:37,292 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 173 transitions, 2067 flow. Second operand has 6 states, 6 states have (on average 264.3333333333333) internal successors, (1586), 6 states have internal predecessors, (1586), 0 states have call successors, (0), 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 13:38:37,292 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:38:37,292 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 693 [2022-12-13 13:38:37,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:39:34,739 INFO L130 PetriNetUnfolder]: 201921/260512 cut-off events. [2022-12-13 13:39:34,739 INFO L131 PetriNetUnfolder]: For 446252/446662 co-relation queries the response was YES. [2022-12-13 13:39:36,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 846960 conditions, 260512 events. 201921/260512 cut-off events. For 446252/446662 co-relation queries the response was YES. Maximal size of possible extension queue 17050. Compared 1846753 event pairs, 60820 based on Foata normal form. 491/117704 useless extension candidates. Maximal degree in co-relation 846920. Up to 182040 conditions per place. [2022-12-13 13:39:36,959 INFO L137 encePairwiseOnDemand]: 684/693 looper letters, 207 selfloop transitions, 40 changer transitions 0/250 dead transitions. [2022-12-13 13:39:36,960 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 250 transitions, 2872 flow [2022-12-13 13:39:36,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:39:36,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 13:39:36,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1184 transitions. [2022-12-13 13:39:36,963 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42712842712842713 [2022-12-13 13:39:36,963 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1184 transitions. [2022-12-13 13:39:36,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1184 transitions. [2022-12-13 13:39:36,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:39:36,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1184 transitions. [2022-12-13 13:39:36,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 0 states have call successors, (0), 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 13:39:36,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 693.0) internal successors, (3465), 5 states have internal predecessors, (3465), 0 states have call successors, (0), 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 13:39:36,967 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 693.0) internal successors, (3465), 5 states have internal predecessors, (3465), 0 states have call successors, (0), 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 13:39:36,968 INFO L175 Difference]: Start difference. First operand has 118 places, 173 transitions, 2067 flow. Second operand 4 states and 1184 transitions. [2022-12-13 13:39:36,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 250 transitions, 2872 flow [2022-12-13 13:39:39,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 250 transitions, 2867 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 13:39:39,696 INFO L231 Difference]: Finished difference. Result has 120 places, 173 transitions, 2182 flow [2022-12-13 13:39:39,696 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=693, PETRI_DIFFERENCE_MINUEND_FLOW=2062, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2182, PETRI_PLACES=120, PETRI_TRANSITIONS=173} [2022-12-13 13:39:39,696 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, 45 predicate places. [2022-12-13 13:39:39,696 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 173 transitions, 2182 flow [2022-12-13 13:39:39,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 264.3333333333333) internal successors, (1586), 6 states have internal predecessors, (1586), 0 states have call successors, (0), 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 13:39:39,696 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:39:39,697 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:39:39,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 13:39:39,697 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-12-13 13:39:39,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:39:39,697 INFO L85 PathProgramCache]: Analyzing trace with hash -2071798120, now seen corresponding path program 1 times [2022-12-13 13:39:39,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:39:39,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272603763] [2022-12-13 13:39:39,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:39:39,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:39:39,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:39:39,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:39:39,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:39:39,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272603763] [2022-12-13 13:39:39,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272603763] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:39:39,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603528170] [2022-12-13 13:39:39,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:39:39,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:39:39,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:39:39,892 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:39:39,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6134aa6-890c-4b8e-bdeb-c645da1cf711/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 13:39:40,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:39:40,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-13 13:39:40,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:39:40,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 13:39:40,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:39:40,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 13:39:40,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:39:40,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 13:39:40,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:39:40,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 13:39:40,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:39:40,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:39:40,412 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:39:40,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2022-12-13 13:39:40,421 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:39:40,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 977 treesize of output 947 [2022-12-13 13:39:40,433 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 934 treesize of output 870 [2022-12-13 13:39:40,442 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 870 treesize of output 838 [2022-12-13 13:39:40,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 838 treesize of output 822