./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b 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_fb4b0e5e-dea8-4a61-9e17-ae02a80eac1a/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4b0e5e-dea8-4a61-9e17-ae02a80eac1a/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4b0e5e-dea8-4a61-9e17-ae02a80eac1a/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4b0e5e-dea8-4a61-9e17-ae02a80eac1a/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4b0e5e-dea8-4a61-9e17-ae02a80eac1a/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4b0e5e-dea8-4a61-9e17-ae02a80eac1a/bin/uautomizer-ug76WZFUDN --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 7cd6aaa75855c8ee03a174376352b142cf57dd56532b968b1b6c916585172927 --- 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-6b4ec56 [2022-11-20 10:47:58,759 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:47:58,762 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:47:58,782 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:47:58,782 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:47:58,783 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:47:58,785 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:47:58,786 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:47:58,788 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:47:58,789 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:47:58,790 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:47:58,791 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:47:58,791 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:47:58,793 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:47:58,794 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:47:58,795 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:47:58,796 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:47:58,797 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:47:58,798 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:47:58,800 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:47:58,801 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:47:58,803 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:47:58,804 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:47:58,805 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:47:58,808 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:47:58,809 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:47:58,809 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:47:58,810 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:47:58,810 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:47:58,811 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:47:58,811 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:47:58,812 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:47:58,813 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:47:58,814 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:47:58,815 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:47:58,815 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:47:58,816 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:47:58,816 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:47:58,817 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:47:58,817 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:47:58,818 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:47:58,819 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4b0e5e-dea8-4a61-9e17-ae02a80eac1a/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 10:47:58,854 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:47:58,854 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:47:58,855 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:47:58,855 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:47:58,856 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:47:58,856 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:47:58,857 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:47:58,857 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:47:58,857 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:47:58,857 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:47:58,858 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:47:58,858 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:47:58,858 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:47:58,858 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:47:58,858 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:47:58,859 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:47:58,859 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:47:58,859 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:47:58,859 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 10:47:58,859 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:47:58,860 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:47:58,860 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:47:58,860 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:47:58,860 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:47:58,860 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:47:58,861 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:47:58,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:47:58,861 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:47:58,861 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:47:58,862 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:47:58,862 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:47:58,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:47:58,862 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:47:58,862 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:47:58,863 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:47:58,863 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_fb4b0e5e-dea8-4a61-9e17-ae02a80eac1a/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4b0e5e-dea8-4a61-9e17-ae02a80eac1a/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cd6aaa75855c8ee03a174376352b142cf57dd56532b968b1b6c916585172927 [2022-11-20 10:47:59,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:47:59,210 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:47:59,213 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:47:59,214 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:47:59,214 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:47:59,216 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4b0e5e-dea8-4a61-9e17-ae02a80eac1a/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i [2022-11-20 10:48:02,361 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:48:02,673 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:48:02,677 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4b0e5e-dea8-4a61-9e17-ae02a80eac1a/sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i [2022-11-20 10:48:02,696 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4b0e5e-dea8-4a61-9e17-ae02a80eac1a/bin/uautomizer-ug76WZFUDN/data/88c58a58a/83d661d48542495f82459496aea68c0e/FLAGdcab28729 [2022-11-20 10:48:02,714 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4b0e5e-dea8-4a61-9e17-ae02a80eac1a/bin/uautomizer-ug76WZFUDN/data/88c58a58a/83d661d48542495f82459496aea68c0e [2022-11-20 10:48:02,720 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:48:02,722 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:48:02,726 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:48:02,726 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:48:02,729 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:48:02,730 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:48:02" (1/1) ... [2022-11-20 10:48:02,731 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60b0f31f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:02, skipping insertion in model container [2022-11-20 10:48:02,731 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:48:02" (1/1) ... [2022-11-20 10:48:02,740 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:48:02,789 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:48:03,186 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_fb4b0e5e-dea8-4a61-9e17-ae02a80eac1a/sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i[30176,30189] [2022-11-20 10:48:03,214 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:48:03,231 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:48:03,263 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_fb4b0e5e-dea8-4a61-9e17-ae02a80eac1a/sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i[30176,30189] [2022-11-20 10:48:03,272 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:48:03,309 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:48:03,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:03 WrapperNode [2022-11-20 10:48:03,310 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:48:03,311 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:48:03,311 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:48:03,311 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:48:03,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:03" (1/1) ... [2022-11-20 10:48:03,340 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:03" (1/1) ... [2022-11-20 10:48:03,378 INFO L138 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 88 [2022-11-20 10:48:03,378 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:48:03,379 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:48:03,379 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:48:03,380 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:48:03,392 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:03" (1/1) ... [2022-11-20 10:48:03,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:03" (1/1) ... [2022-11-20 10:48:03,405 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:03" (1/1) ... [2022-11-20 10:48:03,406 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:03" (1/1) ... [2022-11-20 10:48:03,412 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:03" (1/1) ... [2022-11-20 10:48:03,416 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:03" (1/1) ... [2022-11-20 10:48:03,418 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:03" (1/1) ... [2022-11-20 10:48:03,420 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:03" (1/1) ... [2022-11-20 10:48:03,422 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:48:03,423 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:48:03,423 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:48:03,423 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:48:03,424 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:03" (1/1) ... [2022-11-20 10:48:03,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:48:03,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4b0e5e-dea8-4a61-9e17-ae02a80eac1a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:48:03,459 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4b0e5e-dea8-4a61-9e17-ae02a80eac1a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:48:03,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4b0e5e-dea8-4a61-9e17-ae02a80eac1a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:48:03,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:48:03,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:48:03,503 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 10:48:03,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:48:03,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:48:03,504 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-20 10:48:03,504 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-20 10:48:03,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:48:03,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:48:03,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:48:03,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:48:03,506 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 10:48:03,698 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:48:03,700 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:48:04,049 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:48:04,062 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:48:04,062 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-20 10:48:04,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:48:04 BoogieIcfgContainer [2022-11-20 10:48:04,065 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:48:04,067 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:48:04,068 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:48:04,071 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:48:04,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:48:02" (1/3) ... [2022-11-20 10:48:04,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@217a9f92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:48:04, skipping insertion in model container [2022-11-20 10:48:04,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:03" (2/3) ... [2022-11-20 10:48:04,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@217a9f92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:48:04, skipping insertion in model container [2022-11-20 10:48:04,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:48:04" (3/3) ... [2022-11-20 10:48:04,074 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_12-ptr_racefree.i [2022-11-20 10:48:04,083 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 10:48:04,094 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:48:04,094 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-20 10:48:04,095 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 10:48:04,191 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-20 10:48:04,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 138 transitions, 284 flow [2022-11-20 10:48:04,366 INFO L130 PetriNetUnfolder]: 17/175 cut-off events. [2022-11-20 10:48:04,366 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 10:48:04,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 175 events. 17/175 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 416 event pairs, 0 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 87. Up to 4 conditions per place. [2022-11-20 10:48:04,374 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 138 transitions, 284 flow [2022-11-20 10:48:04,379 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 135 transitions, 278 flow [2022-11-20 10:48:04,389 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:48:04,396 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;@676393e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:48:04,396 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-20 10:48:04,416 INFO L130 PetriNetUnfolder]: 2/68 cut-off events. [2022-11-20 10:48:04,416 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 10:48:04,416 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:48:04,417 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:48:04,417 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 10:48:04,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:04,423 INFO L85 PathProgramCache]: Analyzing trace with hash -731411564, now seen corresponding path program 1 times [2022-11-20 10:48:04,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:04,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927125571] [2022-11-20 10:48:04,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:04,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:04,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:04,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:48:04,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:04,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927125571] [2022-11-20 10:48:04,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927125571] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:48:04,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:48:04,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:48:04,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955638755] [2022-11-20 10:48:04,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:48:04,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:48:04,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:04,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:48:04,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:48:04,948 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 138 [2022-11-20 10:48:04,952 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 135 transitions, 278 flow. Second operand has 4 states, 4 states have (on average 113.75) internal successors, (455), 4 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:04,952 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:48:04,953 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 138 [2022-11-20 10:48:04,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:48:05,035 INFO L130 PetriNetUnfolder]: 0/125 cut-off events. [2022-11-20 10:48:05,036 INFO L131 PetriNetUnfolder]: For 12/29 co-relation queries the response was YES. [2022-11-20 10:48:05,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 125 events. 0/125 cut-off events. For 12/29 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 108 event pairs, 0 based on Foata normal form. 40/157 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2022-11-20 10:48:05,038 INFO L137 encePairwiseOnDemand]: 120/138 looper letters, 10 selfloop transitions, 4 changer transitions 0/123 dead transitions. [2022-11-20 10:48:05,038 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 123 transitions, 282 flow [2022-11-20 10:48:05,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:48:05,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:48:05,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 607 transitions. [2022-11-20 10:48:05,062 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8797101449275362 [2022-11-20 10:48:05,063 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 607 transitions. [2022-11-20 10:48:05,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 607 transitions. [2022-11-20 10:48:05,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:48:05,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 607 transitions. [2022-11-20 10:48:05,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 121.4) internal successors, (607), 5 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:05,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:05,091 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:05,092 INFO L175 Difference]: Start difference. First operand has 127 places, 135 transitions, 278 flow. Second operand 5 states and 607 transitions. [2022-11-20 10:48:05,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 123 transitions, 282 flow [2022-11-20 10:48:05,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 123 transitions, 282 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 10:48:05,106 INFO L231 Difference]: Finished difference. Result has 129 places, 121 transitions, 262 flow [2022-11-20 10:48:05,108 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=262, PETRI_PLACES=129, PETRI_TRANSITIONS=121} [2022-11-20 10:48:05,114 INFO L288 CegarLoopForPetriNet]: 127 programPoint places, 2 predicate places. [2022-11-20 10:48:05,114 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 121 transitions, 262 flow [2022-11-20 10:48:05,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 113.75) internal successors, (455), 4 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:05,116 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:48:05,116 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:48:05,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:48:05,117 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 10:48:05,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:05,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1231930810, now seen corresponding path program 1 times [2022-11-20 10:48:05,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:05,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201289698] [2022-11-20 10:48:05,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:05,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:05,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:06,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:48:06,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:06,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201289698] [2022-11-20 10:48:06,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201289698] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:48:06,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:48:06,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 10:48:06,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431965490] [2022-11-20 10:48:06,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:48:06,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:48:06,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:06,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:48:06,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:48:06,105 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 138 [2022-11-20 10:48:06,107 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 121 transitions, 262 flow. Second operand has 12 states, 12 states have (on average 80.5) internal successors, (966), 12 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:06,108 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:48:06,108 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 138 [2022-11-20 10:48:06,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:48:06,829 INFO L130 PetriNetUnfolder]: 104/543 cut-off events. [2022-11-20 10:48:06,829 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-20 10:48:06,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 843 conditions, 543 events. 104/543 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3019 event pairs, 0 based on Foata normal form. 0/509 useless extension candidates. Maximal degree in co-relation 754. Up to 89 conditions per place. [2022-11-20 10:48:06,840 INFO L137 encePairwiseOnDemand]: 122/138 looper letters, 87 selfloop transitions, 30 changer transitions 2/192 dead transitions. [2022-11-20 10:48:06,840 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 192 transitions, 642 flow [2022-11-20 10:48:06,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 10:48:06,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-20 10:48:06,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1607 transitions. [2022-11-20 10:48:06,845 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6128909229595728 [2022-11-20 10:48:06,845 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1607 transitions. [2022-11-20 10:48:06,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1607 transitions. [2022-11-20 10:48:06,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:48:06,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1607 transitions. [2022-11-20 10:48:06,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:06,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 138.0) internal successors, (2760), 20 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:06,861 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 138.0) internal successors, (2760), 20 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:06,861 INFO L175 Difference]: Start difference. First operand has 129 places, 121 transitions, 262 flow. Second operand 19 states and 1607 transitions. [2022-11-20 10:48:06,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 192 transitions, 642 flow [2022-11-20 10:48:06,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 192 transitions, 634 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 10:48:06,867 INFO L231 Difference]: Finished difference. Result has 152 places, 144 transitions, 436 flow [2022-11-20 10:48:06,867 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=436, PETRI_PLACES=152, PETRI_TRANSITIONS=144} [2022-11-20 10:48:06,868 INFO L288 CegarLoopForPetriNet]: 127 programPoint places, 25 predicate places. [2022-11-20 10:48:06,868 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 144 transitions, 436 flow [2022-11-20 10:48:06,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 80.5) internal successors, (966), 12 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:06,869 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:48:06,870 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:48:06,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:48:06,870 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 10:48:06,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:06,871 INFO L85 PathProgramCache]: Analyzing trace with hash -382521750, now seen corresponding path program 1 times [2022-11-20 10:48:06,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:06,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908421924] [2022-11-20 10:48:06,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:06,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:06,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:48:06,896 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:48:06,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:48:06,931 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:48:06,931 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 10:48:06,932 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-11-20 10:48:06,934 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-11-20 10:48:06,935 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-11-20 10:48:06,935 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-11-20 10:48:06,935 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-11-20 10:48:06,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-11-20 10:48:06,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-11-20 10:48:06,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-11-20 10:48:06,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-11-20 10:48:06,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-11-20 10:48:06,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-11-20 10:48:06,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-11-20 10:48:06,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-11-20 10:48:06,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:48:06,938 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-20 10:48:06,941 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 10:48:06,941 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-20 10:48:06,972 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 10:48:06,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 181 transitions, 380 flow [2022-11-20 10:48:07,023 INFO L130 PetriNetUnfolder]: 31/292 cut-off events. [2022-11-20 10:48:07,024 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-20 10:48:07,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 292 events. 31/292 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 906 event pairs, 0 based on Foata normal form. 0/239 useless extension candidates. Maximal degree in co-relation 177. Up to 8 conditions per place. [2022-11-20 10:48:07,036 INFO L82 GeneralOperation]: Start removeDead. Operand has 167 places, 181 transitions, 380 flow [2022-11-20 10:48:07,041 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 167 places, 181 transitions, 380 flow [2022-11-20 10:48:07,047 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:48:07,048 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;@676393e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:48:07,048 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-20 10:48:07,057 INFO L130 PetriNetUnfolder]: 2/68 cut-off events. [2022-11-20 10:48:07,058 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 10:48:07,058 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:48:07,058 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:48:07,058 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 10:48:07,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:07,059 INFO L85 PathProgramCache]: Analyzing trace with hash -713150222, now seen corresponding path program 1 times [2022-11-20 10:48:07,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:07,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219774438] [2022-11-20 10:48:07,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:07,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:07,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:07,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:48:07,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:07,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219774438] [2022-11-20 10:48:07,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219774438] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:48:07,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:48:07,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:48:07,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789960711] [2022-11-20 10:48:07,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:48:07,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:48:07,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:07,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:48:07,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:48:07,146 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 181 [2022-11-20 10:48:07,147 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 181 transitions, 380 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:07,148 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:48:07,148 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 181 [2022-11-20 10:48:07,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:48:07,227 INFO L130 PetriNetUnfolder]: 2/241 cut-off events. [2022-11-20 10:48:07,227 INFO L131 PetriNetUnfolder]: For 14/46 co-relation queries the response was YES. [2022-11-20 10:48:07,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284 conditions, 241 events. 2/241 cut-off events. For 14/46 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 551 event pairs, 0 based on Foata normal form. 112/329 useless extension candidates. Maximal degree in co-relation 150. Up to 21 conditions per place. [2022-11-20 10:48:07,229 INFO L137 encePairwiseOnDemand]: 157/181 looper letters, 19 selfloop transitions, 4 changer transitions 0/170 dead transitions. [2022-11-20 10:48:07,229 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 170 transitions, 404 flow [2022-11-20 10:48:07,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:48:07,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:48:07,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 797 transitions. [2022-11-20 10:48:07,232 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8806629834254144 [2022-11-20 10:48:07,232 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 797 transitions. [2022-11-20 10:48:07,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 797 transitions. [2022-11-20 10:48:07,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:48:07,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 797 transitions. [2022-11-20 10:48:07,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 159.4) internal successors, (797), 5 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:07,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:07,237 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:07,238 INFO L175 Difference]: Start difference. First operand has 167 places, 181 transitions, 380 flow. Second operand 5 states and 797 transitions. [2022-11-20 10:48:07,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 170 transitions, 404 flow [2022-11-20 10:48:07,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 170 transitions, 404 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 10:48:07,242 INFO L231 Difference]: Finished difference. Result has 173 places, 166 transitions, 376 flow [2022-11-20 10:48:07,243 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=376, PETRI_PLACES=173, PETRI_TRANSITIONS=166} [2022-11-20 10:48:07,243 INFO L288 CegarLoopForPetriNet]: 167 programPoint places, 6 predicate places. [2022-11-20 10:48:07,244 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 166 transitions, 376 flow [2022-11-20 10:48:07,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:07,244 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:48:07,244 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:48:07,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:48:07,245 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 10:48:07,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:07,245 INFO L85 PathProgramCache]: Analyzing trace with hash 520858884, now seen corresponding path program 1 times [2022-11-20 10:48:07,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:07,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114239773] [2022-11-20 10:48:07,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:07,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:07,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:07,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:48:07,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:07,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114239773] [2022-11-20 10:48:07,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114239773] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:48:07,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:48:07,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 10:48:07,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807843894] [2022-11-20 10:48:07,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:48:07,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:48:07,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:07,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:48:07,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:48:07,768 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 181 [2022-11-20 10:48:07,770 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 166 transitions, 376 flow. Second operand has 12 states, 12 states have (on average 106.5) internal successors, (1278), 12 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:07,770 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:48:07,770 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 181 [2022-11-20 10:48:07,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:48:10,482 INFO L130 PetriNetUnfolder]: 4267/11459 cut-off events. [2022-11-20 10:48:10,483 INFO L131 PetriNetUnfolder]: For 206/206 co-relation queries the response was YES. [2022-11-20 10:48:10,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18632 conditions, 11459 events. 4267/11459 cut-off events. For 206/206 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 118244 event pairs, 1042 based on Foata normal form. 0/10538 useless extension candidates. Maximal degree in co-relation 18538. Up to 3131 conditions per place. [2022-11-20 10:48:10,573 INFO L137 encePairwiseOnDemand]: 164/181 looper letters, 256 selfloop transitions, 50 changer transitions 0/413 dead transitions. [2022-11-20 10:48:10,574 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 413 transitions, 1531 flow [2022-11-20 10:48:10,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 10:48:10,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-20 10:48:10,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2710 transitions. [2022-11-20 10:48:10,580 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6509728561133797 [2022-11-20 10:48:10,581 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2710 transitions. [2022-11-20 10:48:10,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2710 transitions. [2022-11-20 10:48:10,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:48:10,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2710 transitions. [2022-11-20 10:48:10,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 117.82608695652173) internal successors, (2710), 23 states have internal predecessors, (2710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:10,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 181.0) internal successors, (4344), 24 states have internal predecessors, (4344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:10,599 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 181.0) internal successors, (4344), 24 states have internal predecessors, (4344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:10,599 INFO L175 Difference]: Start difference. First operand has 173 places, 166 transitions, 376 flow. Second operand 23 states and 2710 transitions. [2022-11-20 10:48:10,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 413 transitions, 1531 flow [2022-11-20 10:48:10,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 413 transitions, 1529 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:48:10,610 INFO L231 Difference]: Finished difference. Result has 210 places, 222 transitions, 764 flow [2022-11-20 10:48:10,610 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=764, PETRI_PLACES=210, PETRI_TRANSITIONS=222} [2022-11-20 10:48:10,611 INFO L288 CegarLoopForPetriNet]: 167 programPoint places, 43 predicate places. [2022-11-20 10:48:10,611 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 222 transitions, 764 flow [2022-11-20 10:48:10,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 106.5) internal successors, (1278), 12 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:10,612 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:48:10,612 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:48:10,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:48:10,612 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 10:48:10,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:10,613 INFO L85 PathProgramCache]: Analyzing trace with hash 448729579, now seen corresponding path program 1 times [2022-11-20 10:48:10,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:10,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237898608] [2022-11-20 10:48:10,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:10,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:10,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:10,671 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:48:10,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:10,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237898608] [2022-11-20 10:48:10,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237898608] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:48:10,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:48:10,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:48:10,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800236130] [2022-11-20 10:48:10,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:48:10,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:48:10,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:10,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:48:10,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:48:10,674 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 181 [2022-11-20 10:48:10,675 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 222 transitions, 764 flow. Second operand has 4 states, 4 states have (on average 150.75) internal successors, (603), 4 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:10,675 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:48:10,675 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 181 [2022-11-20 10:48:10,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:48:10,960 INFO L130 PetriNetUnfolder]: 113/1318 cut-off events. [2022-11-20 10:48:10,960 INFO L131 PetriNetUnfolder]: For 1352/1544 co-relation queries the response was YES. [2022-11-20 10:48:10,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2280 conditions, 1318 events. 113/1318 cut-off events. For 1352/1544 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 9989 event pairs, 25 based on Foata normal form. 62/1266 useless extension candidates. Maximal degree in co-relation 2154. Up to 89 conditions per place. [2022-11-20 10:48:10,977 INFO L137 encePairwiseOnDemand]: 175/181 looper letters, 14 selfloop transitions, 8 changer transitions 0/222 dead transitions. [2022-11-20 10:48:10,977 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 222 transitions, 806 flow [2022-11-20 10:48:10,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:48:10,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:48:10,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 752 transitions. [2022-11-20 10:48:10,979 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.830939226519337 [2022-11-20 10:48:10,980 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 752 transitions. [2022-11-20 10:48:10,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 752 transitions. [2022-11-20 10:48:10,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:48:10,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 752 transitions. [2022-11-20 10:48:10,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 150.4) internal successors, (752), 5 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:10,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:10,985 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:10,985 INFO L175 Difference]: Start difference. First operand has 210 places, 222 transitions, 764 flow. Second operand 5 states and 752 transitions. [2022-11-20 10:48:10,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 222 transitions, 806 flow [2022-11-20 10:48:10,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 222 transitions, 803 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 10:48:10,996 INFO L231 Difference]: Finished difference. Result has 212 places, 222 transitions, 781 flow [2022-11-20 10:48:10,997 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=757, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=781, PETRI_PLACES=212, PETRI_TRANSITIONS=222} [2022-11-20 10:48:10,997 INFO L288 CegarLoopForPetriNet]: 167 programPoint places, 45 predicate places. [2022-11-20 10:48:10,998 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 222 transitions, 781 flow [2022-11-20 10:48:10,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 150.75) internal successors, (603), 4 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:10,998 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:48:10,998 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:48:10,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 10:48:10,999 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 10:48:10,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:10,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1025715527, now seen corresponding path program 1 times [2022-11-20 10:48:11,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:11,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380680746] [2022-11-20 10:48:11,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:11,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:11,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:11,097 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:48:11,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:11,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380680746] [2022-11-20 10:48:11,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380680746] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:48:11,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454914976] [2022-11-20 10:48:11,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:11,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:48:11,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4b0e5e-dea8-4a61-9e17-ae02a80eac1a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:48:11,105 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4b0e5e-dea8-4a61-9e17-ae02a80eac1a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:48:11,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4b0e5e-dea8-4a61-9e17-ae02a80eac1a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:48:11,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:11,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:48:11,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:48:11,459 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:48:11,459 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:48:11,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454914976] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:48:11,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:48:11,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 10:48:11,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533023196] [2022-11-20 10:48:11,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:48:11,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:48:11,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:11,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:48:11,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:48:11,466 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 181 [2022-11-20 10:48:11,467 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 222 transitions, 781 flow. Second operand has 6 states, 6 states have (on average 149.66666666666666) internal successors, (898), 6 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:11,467 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:48:11,468 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 181 [2022-11-20 10:48:11,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:48:11,824 INFO L130 PetriNetUnfolder]: 113/1314 cut-off events. [2022-11-20 10:48:11,824 INFO L131 PetriNetUnfolder]: For 1366/1544 co-relation queries the response was YES. [2022-11-20 10:48:11,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2295 conditions, 1314 events. 113/1314 cut-off events. For 1366/1544 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 9961 event pairs, 25 based on Foata normal form. 34/1234 useless extension candidates. Maximal degree in co-relation 2169. Up to 89 conditions per place. [2022-11-20 10:48:11,851 INFO L137 encePairwiseOnDemand]: 176/181 looper letters, 18 selfloop transitions, 6 changer transitions 0/224 dead transitions. [2022-11-20 10:48:11,851 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 224 transitions, 837 flow [2022-11-20 10:48:11,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:48:11,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 10:48:11,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1051 transitions. [2022-11-20 10:48:11,855 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.829518547750592 [2022-11-20 10:48:11,855 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1051 transitions. [2022-11-20 10:48:11,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1051 transitions. [2022-11-20 10:48:11,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:48:11,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1051 transitions. [2022-11-20 10:48:11,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 150.14285714285714) internal successors, (1051), 7 states have internal predecessors, (1051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:11,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 181.0) internal successors, (1448), 8 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:11,863 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 181.0) internal successors, (1448), 8 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:11,863 INFO L175 Difference]: Start difference. First operand has 212 places, 222 transitions, 781 flow. Second operand 7 states and 1051 transitions. [2022-11-20 10:48:11,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 224 transitions, 837 flow [2022-11-20 10:48:11,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 224 transitions, 825 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 10:48:11,881 INFO L231 Difference]: Finished difference. Result has 214 places, 221 transitions, 777 flow [2022-11-20 10:48:11,882 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=765, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=777, PETRI_PLACES=214, PETRI_TRANSITIONS=221} [2022-11-20 10:48:11,884 INFO L288 CegarLoopForPetriNet]: 167 programPoint places, 47 predicate places. [2022-11-20 10:48:11,884 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 221 transitions, 777 flow [2022-11-20 10:48:11,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 149.66666666666666) internal successors, (898), 6 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:11,885 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:48:11,885 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:48:11,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4b0e5e-dea8-4a61-9e17-ae02a80eac1a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 10:48:12,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4b0e5e-dea8-4a61-9e17-ae02a80eac1a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:48:12,102 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 10:48:12,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:12,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1251571452, now seen corresponding path program 1 times [2022-11-20 10:48:12,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:12,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109857611] [2022-11-20 10:48:12,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:12,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:12,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:12,675 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:48:12,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:12,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109857611] [2022-11-20 10:48:12,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109857611] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:48:12,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194464273] [2022-11-20 10:48:12,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:12,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:48:12,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4b0e5e-dea8-4a61-9e17-ae02a80eac1a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:48:12,677 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4b0e5e-dea8-4a61-9e17-ae02a80eac1a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:48:12,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4b0e5e-dea8-4a61-9e17-ae02a80eac1a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:48:12,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:12,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 10:48:12,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:48:13,075 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 10:48:13,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-20 10:48:13,156 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 [2022-11-20 10:48:13,350 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 [2022-11-20 10:48:13,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2022-11-20 10:48:13,417 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:48:13,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:48:14,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 30 treesize of output 22 [2022-11-20 10:48:14,060 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 [2022-11-20 10:48:14,089 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-20 10:48:14,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2022-11-20 10:48:14,118 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:48:14,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194464273] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:48:14,118 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:48:14,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 27 [2022-11-20 10:48:14,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109091526] [2022-11-20 10:48:14,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:48:14,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-20 10:48:14,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:14,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-20 10:48:14,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=644, Unknown=11, NotChecked=0, Total=756 [2022-11-20 10:48:14,124 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 181 [2022-11-20 10:48:14,128 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 221 transitions, 777 flow. Second operand has 28 states, 28 states have (on average 106.71428571428571) internal successors, (2988), 28 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:14,128 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:48:14,128 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 181 [2022-11-20 10:48:14,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:48:18,934 INFO L130 PetriNetUnfolder]: 5947/16085 cut-off events. [2022-11-20 10:48:18,934 INFO L131 PetriNetUnfolder]: For 22484/22811 co-relation queries the response was YES. [2022-11-20 10:48:19,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36154 conditions, 16085 events. 5947/16085 cut-off events. For 22484/22811 co-relation queries the response was YES. Maximal size of possible extension queue 601. Compared 175655 event pairs, 568 based on Foata normal form. 323/15335 useless extension candidates. Maximal degree in co-relation 35444. Up to 2339 conditions per place. [2022-11-20 10:48:19,090 INFO L137 encePairwiseOnDemand]: 161/181 looper letters, 320 selfloop transitions, 115 changer transitions 0/541 dead transitions. [2022-11-20 10:48:19,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 541 transitions, 2851 flow [2022-11-20 10:48:19,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-20 10:48:19,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-11-20 10:48:19,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3408 transitions. [2022-11-20 10:48:19,099 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6492665269575157 [2022-11-20 10:48:19,099 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3408 transitions. [2022-11-20 10:48:19,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3408 transitions. [2022-11-20 10:48:19,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:48:19,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3408 transitions. [2022-11-20 10:48:19,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 117.51724137931035) internal successors, (3408), 29 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:19,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 181.0) internal successors, (5430), 30 states have internal predecessors, (5430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:19,122 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 181.0) internal successors, (5430), 30 states have internal predecessors, (5430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:19,122 INFO L175 Difference]: Start difference. First operand has 214 places, 221 transitions, 777 flow. Second operand 29 states and 3408 transitions. [2022-11-20 10:48:19,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 541 transitions, 2851 flow [2022-11-20 10:48:19,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 541 transitions, 2840 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-20 10:48:19,283 INFO L231 Difference]: Finished difference. Result has 253 places, 284 transitions, 1542 flow [2022-11-20 10:48:19,284 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1542, PETRI_PLACES=253, PETRI_TRANSITIONS=284} [2022-11-20 10:48:19,285 INFO L288 CegarLoopForPetriNet]: 167 programPoint places, 86 predicate places. [2022-11-20 10:48:19,285 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 284 transitions, 1542 flow [2022-11-20 10:48:19,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 106.71428571428571) internal successors, (2988), 28 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:19,287 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:48:19,287 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:48:19,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4b0e5e-dea8-4a61-9e17-ae02a80eac1a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:48:19,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4b0e5e-dea8-4a61-9e17-ae02a80eac1a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:48:19,493 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 10:48:19,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:19,494 INFO L85 PathProgramCache]: Analyzing trace with hash -267568285, now seen corresponding path program 1 times [2022-11-20 10:48:19,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:19,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399913220] [2022-11-20 10:48:19,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:19,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:19,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:19,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:48:19,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:19,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399913220] [2022-11-20 10:48:19,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399913220] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:48:19,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:48:19,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:48:19,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530070409] [2022-11-20 10:48:19,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:48:19,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:48:19,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:19,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:48:19,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:48:19,686 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 181 [2022-11-20 10:48:19,687 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 284 transitions, 1542 flow. Second operand has 6 states, 6 states have (on average 125.16666666666667) internal successors, (751), 6 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:19,687 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:48:19,687 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 181 [2022-11-20 10:48:19,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:48:22,064 INFO L130 PetriNetUnfolder]: 2184/9314 cut-off events. [2022-11-20 10:48:22,065 INFO L131 PetriNetUnfolder]: For 21307/21760 co-relation queries the response was YES. [2022-11-20 10:48:22,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22354 conditions, 9314 events. 2184/9314 cut-off events. For 21307/21760 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 105561 event pairs, 590 based on Foata normal form. 106/8387 useless extension candidates. Maximal degree in co-relation 22150. Up to 1390 conditions per place. [2022-11-20 10:48:22,196 INFO L137 encePairwiseOnDemand]: 168/181 looper letters, 168 selfloop transitions, 81 changer transitions 0/404 dead transitions. [2022-11-20 10:48:22,196 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 404 transitions, 2785 flow [2022-11-20 10:48:22,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:48:22,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 10:48:22,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1473 transitions. [2022-11-20 10:48:22,203 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7398292315419387 [2022-11-20 10:48:22,203 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1473 transitions. [2022-11-20 10:48:22,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1473 transitions. [2022-11-20 10:48:22,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:48:22,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1473 transitions. [2022-11-20 10:48:22,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 133.9090909090909) internal successors, (1473), 11 states have internal predecessors, (1473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:22,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 181.0) internal successors, (2172), 12 states have internal predecessors, (2172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:22,214 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 181.0) internal successors, (2172), 12 states have internal predecessors, (2172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:22,215 INFO L175 Difference]: Start difference. First operand has 253 places, 284 transitions, 1542 flow. Second operand 11 states and 1473 transitions. [2022-11-20 10:48:22,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 404 transitions, 2785 flow [2022-11-20 10:48:22,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 404 transitions, 2710 flow, removed 36 selfloop flow, removed 2 redundant places. [2022-11-20 10:48:22,324 INFO L231 Difference]: Finished difference. Result has 268 places, 321 transitions, 2095 flow [2022-11-20 10:48:22,325 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=1483, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2095, PETRI_PLACES=268, PETRI_TRANSITIONS=321} [2022-11-20 10:48:22,327 INFO L288 CegarLoopForPetriNet]: 167 programPoint places, 101 predicate places. [2022-11-20 10:48:22,327 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 321 transitions, 2095 flow [2022-11-20 10:48:22,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 125.16666666666667) internal successors, (751), 6 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:22,328 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:48:22,328 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:48:22,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 10:48:22,329 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 10:48:22,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:22,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1626834723, now seen corresponding path program 1 times [2022-11-20 10:48:22,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:22,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637267944] [2022-11-20 10:48:22,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:22,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:22,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:22,801 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 10:48:22,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:22,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637267944] [2022-11-20 10:48:22,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637267944] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:48:22,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948686990] [2022-11-20 10:48:22,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:22,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:48:22,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4b0e5e-dea8-4a61-9e17-ae02a80eac1a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:48:22,804 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4b0e5e-dea8-4a61-9e17-ae02a80eac1a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:48:22,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4b0e5e-dea8-4a61-9e17-ae02a80eac1a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 10:48:22,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:22,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 10:48:22,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:48:23,158 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 10:48:23,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-20 10:48:23,220 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 [2022-11-20 10:48:23,322 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 [2022-11-20 10:48:23,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2022-11-20 10:48:23,441 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 10:48:23,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:48:23,535 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_106 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_106) |c_~#global~0.base|) |c_~#global~0.offset|) 2147483647)) is different from false [2022-11-20 10:48:23,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 30 treesize of output 22 [2022-11-20 10:48:23,936 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 [2022-11-20 10:48:23,962 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-20 10:48:23,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2022-11-20 10:48:23,981 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 1 not checked. [2022-11-20 10:48:23,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948686990] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:48:23,983 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:48:23,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 27 [2022-11-20 10:48:23,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886601824] [2022-11-20 10:48:23,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:48:23,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-20 10:48:23,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:23,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-20 10:48:23,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=599, Unknown=1, NotChecked=50, Total=756 [2022-11-20 10:48:23,988 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 181 [2022-11-20 10:48:23,992 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 321 transitions, 2095 flow. Second operand has 28 states, 28 states have (on average 106.82142857142857) internal successors, (2991), 28 states have internal predecessors, (2991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:23,992 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:48:23,992 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 181 [2022-11-20 10:48:23,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:48:32,009 INFO L130 PetriNetUnfolder]: 9708/27294 cut-off events. [2022-11-20 10:48:32,009 INFO L131 PetriNetUnfolder]: For 119616/120923 co-relation queries the response was YES. [2022-11-20 10:48:32,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81548 conditions, 27294 events. 9708/27294 cut-off events. For 119616/120923 co-relation queries the response was YES. Maximal size of possible extension queue 1059. Compared 330134 event pairs, 1372 based on Foata normal form. 419/26169 useless extension candidates. Maximal degree in co-relation 80997. Up to 5881 conditions per place. [2022-11-20 10:48:32,434 INFO L137 encePairwiseOnDemand]: 161/181 looper letters, 477 selfloop transitions, 260 changer transitions 0/884 dead transitions. [2022-11-20 10:48:32,434 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 884 transitions, 8004 flow [2022-11-20 10:48:32,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 10:48:32,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-20 10:48:32,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4052 transitions. [2022-11-20 10:48:32,453 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6396211523283346 [2022-11-20 10:48:32,453 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4052 transitions. [2022-11-20 10:48:32,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4052 transitions. [2022-11-20 10:48:32,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:48:32,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4052 transitions. [2022-11-20 10:48:32,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.77142857142857) internal successors, (4052), 35 states have internal predecessors, (4052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:32,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 181.0) internal successors, (6516), 36 states have internal predecessors, (6516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:32,494 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 181.0) internal successors, (6516), 36 states have internal predecessors, (6516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:32,495 INFO L175 Difference]: Start difference. First operand has 268 places, 321 transitions, 2095 flow. Second operand 35 states and 4052 transitions. [2022-11-20 10:48:32,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 884 transitions, 8004 flow [2022-11-20 10:48:33,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 884 transitions, 7750 flow, removed 117 selfloop flow, removed 2 redundant places. [2022-11-20 10:48:33,782 INFO L231 Difference]: Finished difference. Result has 319 places, 530 transitions, 4978 flow [2022-11-20 10:48:33,782 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=2007, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4978, PETRI_PLACES=319, PETRI_TRANSITIONS=530} [2022-11-20 10:48:33,783 INFO L288 CegarLoopForPetriNet]: 167 programPoint places, 152 predicate places. [2022-11-20 10:48:33,783 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 530 transitions, 4978 flow [2022-11-20 10:48:33,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 106.82142857142857) internal successors, (2991), 28 states have internal predecessors, (2991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:33,784 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:48:33,784 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:48:33,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4b0e5e-dea8-4a61-9e17-ae02a80eac1a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 10:48:33,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4b0e5e-dea8-4a61-9e17-ae02a80eac1a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:48:33,990 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 10:48:33,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:33,991 INFO L85 PathProgramCache]: Analyzing trace with hash 295318325, now seen corresponding path program 1 times [2022-11-20 10:48:33,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:33,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259278729] [2022-11-20 10:48:33,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:33,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:34,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:34,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:48:34,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:34,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259278729] [2022-11-20 10:48:34,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259278729] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:48:34,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:48:34,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-20 10:48:34,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376901704] [2022-11-20 10:48:34,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:48:34,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 10:48:34,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:34,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 10:48:34,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-11-20 10:48:34,523 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 181 [2022-11-20 10:48:34,525 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 530 transitions, 4978 flow. Second operand has 15 states, 15 states have (on average 99.66666666666667) internal successors, (1495), 15 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:34,525 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:48:34,525 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 181 [2022-11-20 10:48:34,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:48:46,939 INFO L130 PetriNetUnfolder]: 17362/43519 cut-off events. [2022-11-20 10:48:46,939 INFO L131 PetriNetUnfolder]: For 279708/282054 co-relation queries the response was YES. [2022-11-20 10:48:47,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150604 conditions, 43519 events. 17362/43519 cut-off events. For 279708/282054 co-relation queries the response was YES. Maximal size of possible extension queue 1671. Compared 536184 event pairs, 3287 based on Foata normal form. 777/42480 useless extension candidates. Maximal degree in co-relation 150267. Up to 13583 conditions per place. [2022-11-20 10:48:47,655 INFO L137 encePairwiseOnDemand]: 158/181 looper letters, 642 selfloop transitions, 291 changer transitions 21/1075 dead transitions. [2022-11-20 10:48:47,655 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 1075 transitions, 11427 flow [2022-11-20 10:48:47,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-20 10:48:47,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-20 10:48:47,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 4357 transitions. [2022-11-20 10:48:47,666 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6172262360107664 [2022-11-20 10:48:47,666 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 4357 transitions. [2022-11-20 10:48:47,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 4357 transitions. [2022-11-20 10:48:47,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:48:47,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 4357 transitions. [2022-11-20 10:48:47,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 111.71794871794872) internal successors, (4357), 39 states have internal predecessors, (4357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:47,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 181.0) internal successors, (7240), 40 states have internal predecessors, (7240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:47,694 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 181.0) internal successors, (7240), 40 states have internal predecessors, (7240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:47,694 INFO L175 Difference]: Start difference. First operand has 319 places, 530 transitions, 4978 flow. Second operand 39 states and 4357 transitions. [2022-11-20 10:48:47,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 1075 transitions, 11427 flow [2022-11-20 10:48:51,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 1075 transitions, 10644 flow, removed 390 selfloop flow, removed 2 redundant places. [2022-11-20 10:48:51,107 INFO L231 Difference]: Finished difference. Result has 371 places, 612 transitions, 6526 flow [2022-11-20 10:48:51,108 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=4763, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=207, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=6526, PETRI_PLACES=371, PETRI_TRANSITIONS=612} [2022-11-20 10:48:51,108 INFO L288 CegarLoopForPetriNet]: 167 programPoint places, 204 predicate places. [2022-11-20 10:48:51,108 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 612 transitions, 6526 flow [2022-11-20 10:48:51,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 99.66666666666667) internal successors, (1495), 15 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:51,110 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:48:51,110 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:48:51,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 10:48:51,111 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 10:48:51,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:51,111 INFO L85 PathProgramCache]: Analyzing trace with hash 906745962, now seen corresponding path program 1 times [2022-11-20 10:48:51,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:51,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240561607] [2022-11-20 10:48:51,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:51,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:51,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:48:51,124 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:48:51,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:48:51,141 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:48:51,142 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 10:48:51,142 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-20 10:48:51,142 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-11-20 10:48:51,142 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-11-20 10:48:51,142 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-11-20 10:48:51,143 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-11-20 10:48:51,143 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-11-20 10:48:51,143 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-11-20 10:48:51,143 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-11-20 10:48:51,143 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-11-20 10:48:51,144 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-11-20 10:48:51,144 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-11-20 10:48:51,144 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-11-20 10:48:51,144 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-11-20 10:48:51,144 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-11-20 10:48:51,145 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-11-20 10:48:51,145 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-11-20 10:48:51,145 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-11-20 10:48:51,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 10:48:51,145 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:48:51,146 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 10:48:51,146 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-20 10:48:51,170 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 10:48:51,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 224 transitions, 478 flow [2022-11-20 10:48:51,247 INFO L130 PetriNetUnfolder]: 50/450 cut-off events. [2022-11-20 10:48:51,248 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-20 10:48:51,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 478 conditions, 450 events. 50/450 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1596 event pairs, 1 based on Foata normal form. 0/364 useless extension candidates. Maximal degree in co-relation 300. Up to 16 conditions per place. [2022-11-20 10:48:51,252 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 224 transitions, 478 flow [2022-11-20 10:48:51,257 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 205 places, 224 transitions, 478 flow [2022-11-20 10:48:51,259 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:48:51,259 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;@676393e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:48:51,259 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-20 10:48:51,264 INFO L130 PetriNetUnfolder]: 2/68 cut-off events. [2022-11-20 10:48:51,264 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 10:48:51,264 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:48:51,264 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:48:51,265 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 10:48:51,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:51,265 INFO L85 PathProgramCache]: Analyzing trace with hash 391992699, now seen corresponding path program 1 times [2022-11-20 10:48:51,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:51,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498683068] [2022-11-20 10:48:51,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:51,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:51,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:51,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:48:51,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:51,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498683068] [2022-11-20 10:48:51,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498683068] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:48:51,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:48:51,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:48:51,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88773031] [2022-11-20 10:48:51,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:48:51,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:48:51,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:51,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:48:51,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:48:51,321 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 224 [2022-11-20 10:48:51,322 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 224 transitions, 478 flow. Second operand has 4 states, 4 states have (on average 183.75) internal successors, (735), 4 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:51,322 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:48:51,322 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 224 [2022-11-20 10:48:51,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:48:51,421 INFO L130 PetriNetUnfolder]: 7/384 cut-off events. [2022-11-20 10:48:51,422 INFO L131 PetriNetUnfolder]: For 76/191 co-relation queries the response was YES. [2022-11-20 10:48:51,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 460 conditions, 384 events. 7/384 cut-off events. For 76/191 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1200 event pairs, 1 based on Foata normal form. 280/620 useless extension candidates. Maximal degree in co-relation 277. Up to 40 conditions per place. [2022-11-20 10:48:51,426 INFO L137 encePairwiseOnDemand]: 194/224 looper letters, 21 selfloop transitions, 4 changer transitions 0/207 dead transitions. [2022-11-20 10:48:51,426 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 207 transitions, 494 flow [2022-11-20 10:48:51,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:48:51,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:48:51,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 980 transitions. [2022-11-20 10:48:51,428 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.875 [2022-11-20 10:48:51,428 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 980 transitions. [2022-11-20 10:48:51,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 980 transitions. [2022-11-20 10:48:51,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:48:51,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 980 transitions. [2022-11-20 10:48:51,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 196.0) internal successors, (980), 5 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:51,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:51,433 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:51,433 INFO L175 Difference]: Start difference. First operand has 205 places, 224 transitions, 478 flow. Second operand 5 states and 980 transitions. [2022-11-20 10:48:51,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 207 transitions, 494 flow [2022-11-20 10:48:51,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 207 transitions, 494 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 10:48:51,437 INFO L231 Difference]: Finished difference. Result has 211 places, 203 transitions, 462 flow [2022-11-20 10:48:51,438 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=462, PETRI_PLACES=211, PETRI_TRANSITIONS=203} [2022-11-20 10:48:51,439 INFO L288 CegarLoopForPetriNet]: 205 programPoint places, 6 predicate places. [2022-11-20 10:48:51,439 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 203 transitions, 462 flow [2022-11-20 10:48:51,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 183.75) internal successors, (735), 4 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:51,440 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:48:51,440 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:48:51,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 10:48:51,440 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 10:48:51,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:51,441 INFO L85 PathProgramCache]: Analyzing trace with hash -31887859, now seen corresponding path program 1 times [2022-11-20 10:48:51,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:51,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453980894] [2022-11-20 10:48:51,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:51,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:51,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:51,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:48:51,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:51,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453980894] [2022-11-20 10:48:51,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453980894] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:48:51,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:48:51,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 10:48:51,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518676594] [2022-11-20 10:48:51,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:48:51,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:48:51,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:51,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:48:51,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:48:51,778 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 224 [2022-11-20 10:48:51,779 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 203 transitions, 462 flow. Second operand has 12 states, 12 states have (on average 132.5) internal successors, (1590), 12 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:51,779 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:48:51,780 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 224 [2022-11-20 10:48:51,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:49:11,424 INFO L130 PetriNetUnfolder]: 68092/152408 cut-off events. [2022-11-20 10:49:11,425 INFO L131 PetriNetUnfolder]: For 3762/3762 co-relation queries the response was YES. [2022-11-20 10:49:12,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250697 conditions, 152408 events. 68092/152408 cut-off events. For 3762/3762 co-relation queries the response was YES. Maximal size of possible extension queue 4157. Compared 1970514 event pairs, 18311 based on Foata normal form. 0/141703 useless extension candidates. Maximal degree in co-relation 250602. Up to 50414 conditions per place. [2022-11-20 10:49:13,026 INFO L137 encePairwiseOnDemand]: 206/224 looper letters, 386 selfloop transitions, 62 changer transitions 0/581 dead transitions. [2022-11-20 10:49:13,026 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 581 transitions, 2235 flow [2022-11-20 10:49:13,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 10:49:13,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-20 10:49:13,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3450 transitions. [2022-11-20 10:49:13,037 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6696428571428571 [2022-11-20 10:49:13,038 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3450 transitions. [2022-11-20 10:49:13,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3450 transitions. [2022-11-20 10:49:13,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:49:13,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3450 transitions. [2022-11-20 10:49:13,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 150.0) internal successors, (3450), 23 states have internal predecessors, (3450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:13,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 224.0) internal successors, (5376), 24 states have internal predecessors, (5376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:13,060 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 224.0) internal successors, (5376), 24 states have internal predecessors, (5376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:13,060 INFO L175 Difference]: Start difference. First operand has 211 places, 203 transitions, 462 flow. Second operand 23 states and 3450 transitions. [2022-11-20 10:49:13,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 581 transitions, 2235 flow [2022-11-20 10:49:13,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 581 transitions, 2233 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:49:13,078 INFO L231 Difference]: Finished difference. Result has 248 places, 280 transitions, 958 flow [2022-11-20 10:49:13,079 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=958, PETRI_PLACES=248, PETRI_TRANSITIONS=280} [2022-11-20 10:49:13,080 INFO L288 CegarLoopForPetriNet]: 205 programPoint places, 43 predicate places. [2022-11-20 10:49:13,080 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 280 transitions, 958 flow [2022-11-20 10:49:13,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 132.5) internal successors, (1590), 12 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:13,081 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:49:13,081 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:13,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 10:49:13,081 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 10:49:13,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:13,082 INFO L85 PathProgramCache]: Analyzing trace with hash -762307427, now seen corresponding path program 1 times [2022-11-20 10:49:13,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:13,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818775910] [2022-11-20 10:49:13,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:13,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:13,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:13,124 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:49:13,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:13,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818775910] [2022-11-20 10:49:13,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818775910] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:13,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:13,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:49:13,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167136859] [2022-11-20 10:49:13,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:13,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:49:13,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:13,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:49:13,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:49:13,130 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 224 [2022-11-20 10:49:13,131 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 280 transitions, 958 flow. Second operand has 4 states, 4 states have (on average 185.75) internal successors, (743), 4 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:13,131 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:49:13,131 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 224 [2022-11-20 10:49:13,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:49:13,751 INFO L130 PetriNetUnfolder]: 419/3982 cut-off events. [2022-11-20 10:49:13,751 INFO L131 PetriNetUnfolder]: For 4370/5064 co-relation queries the response was YES. [2022-11-20 10:49:13,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6651 conditions, 3982 events. 419/3982 cut-off events. For 4370/5064 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 40584 event pairs, 81 based on Foata normal form. 173/3771 useless extension candidates. Maximal degree in co-relation 6345. Up to 246 conditions per place. [2022-11-20 10:49:13,811 INFO L137 encePairwiseOnDemand]: 218/224 looper letters, 16 selfloop transitions, 8 changer transitions 0/280 dead transitions. [2022-11-20 10:49:13,812 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 280 transitions, 1004 flow [2022-11-20 10:49:13,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:49:13,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:49:13,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 929 transitions. [2022-11-20 10:49:13,814 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8294642857142858 [2022-11-20 10:49:13,814 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 929 transitions. [2022-11-20 10:49:13,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 929 transitions. [2022-11-20 10:49:13,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:49:13,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 929 transitions. [2022-11-20 10:49:13,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 185.8) internal successors, (929), 5 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:13,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:13,819 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:13,819 INFO L175 Difference]: Start difference. First operand has 248 places, 280 transitions, 958 flow. Second operand 5 states and 929 transitions. [2022-11-20 10:49:13,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 280 transitions, 1004 flow [2022-11-20 10:49:13,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 280 transitions, 1001 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 10:49:13,838 INFO L231 Difference]: Finished difference. Result has 250 places, 280 transitions, 975 flow [2022-11-20 10:49:13,838 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=951, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=975, PETRI_PLACES=250, PETRI_TRANSITIONS=280} [2022-11-20 10:49:13,839 INFO L288 CegarLoopForPetriNet]: 205 programPoint places, 45 predicate places. [2022-11-20 10:49:13,839 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 280 transitions, 975 flow [2022-11-20 10:49:13,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 185.75) internal successors, (743), 4 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:13,840 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:49:13,840 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:13,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 10:49:13,840 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 10:49:13,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:13,841 INFO L85 PathProgramCache]: Analyzing trace with hash 2138274229, now seen corresponding path program 1 times [2022-11-20 10:49:13,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:13,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572605539] [2022-11-20 10:49:13,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:13,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:13,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:13,904 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:13,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:13,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572605539] [2022-11-20 10:49:13,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572605539] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:49:13,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442935995] [2022-11-20 10:49:13,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:13,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:49:13,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4b0e5e-dea8-4a61-9e17-ae02a80eac1a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:13,923 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4b0e5e-dea8-4a61-9e17-ae02a80eac1a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:49:13,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4b0e5e-dea8-4a61-9e17-ae02a80eac1a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 10:49:14,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:14,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:49:14,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:49:14,089 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:14,089 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:49:14,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442935995] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:14,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:49:14,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 10:49:14,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370760775] [2022-11-20 10:49:14,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:14,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:49:14,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:14,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:49:14,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:49:14,094 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 224 [2022-11-20 10:49:14,095 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 280 transitions, 975 flow. Second operand has 6 states, 6 states have (on average 184.66666666666666) internal successors, (1108), 6 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:14,095 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:49:14,095 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 224 [2022-11-20 10:49:14,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand