./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f 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_f51a847b-0478-4887-9976-2fd01a027f82/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51a847b-0478-4887-9976-2fd01a027f82/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51a847b-0478-4887-9976-2fd01a027f82/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51a847b-0478-4887-9976-2fd01a027f82/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51a847b-0478-4887-9976-2fd01a027f82/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51a847b-0478-4887-9976-2fd01a027f82/bin/uautomizer-tPACEb0tL8 --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 eddb66a74cd149f880832378d52d5c02c94fd6efcf2d83aeade11bcdaaabe426 --- 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-e04fb08 [2022-11-16 12:35:45,687 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:35:45,690 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:35:45,731 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:35:45,733 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:35:45,734 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:35:45,738 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:35:45,743 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:35:45,745 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:35:45,752 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:35:45,753 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:35:45,754 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:35:45,755 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:35:45,756 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:35:45,757 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:35:45,760 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:35:45,762 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:35:45,766 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:35:45,768 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:35:45,770 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:35:45,777 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:35:45,780 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:35:45,781 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:35:45,782 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:35:45,785 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:35:45,785 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:35:45,786 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:35:45,787 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:35:45,787 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:35:45,788 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:35:45,788 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:35:45,789 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:35:45,790 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:35:45,791 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:35:45,792 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:35:45,792 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:35:45,793 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:35:45,793 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:35:45,794 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:35:45,794 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:35:45,795 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:35:45,796 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51a847b-0478-4887-9976-2fd01a027f82/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 12:35:45,838 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:35:45,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:35:45,839 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:35:45,839 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:35:45,840 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:35:45,840 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:35:45,841 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:35:45,841 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:35:45,841 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:35:45,842 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:35:45,842 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:35:45,842 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:35:45,843 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:35:45,850 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:35:45,850 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:35:45,850 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:35:45,850 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:35:45,851 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:35:45,851 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 12:35:45,851 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:35:45,851 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:35:45,852 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:35:45,852 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:35:45,852 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:35:45,853 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:35:45,853 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:35:45,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:35:45,853 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:35:45,854 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:35:45,854 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:35:45,854 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:35:45,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:35:45,870 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:35:45,870 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:35:45,870 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:35:45,870 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_f51a847b-0478-4887-9976-2fd01a027f82/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51a847b-0478-4887-9976-2fd01a027f82/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eddb66a74cd149f880832378d52d5c02c94fd6efcf2d83aeade11bcdaaabe426 [2022-11-16 12:35:46,153 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:35:46,185 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:35:46,187 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:35:46,188 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:35:46,191 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:35:46,194 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51a847b-0478-4887-9976-2fd01a027f82/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i [2022-11-16 12:35:46,275 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51a847b-0478-4887-9976-2fd01a027f82/bin/uautomizer-tPACEb0tL8/data/294b34bbc/6c1a90fa9fec4fe79c332cc6d5f80804/FLAG585f5baa0 [2022-11-16 12:35:46,859 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:35:46,865 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51a847b-0478-4887-9976-2fd01a027f82/sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i [2022-11-16 12:35:46,878 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51a847b-0478-4887-9976-2fd01a027f82/bin/uautomizer-tPACEb0tL8/data/294b34bbc/6c1a90fa9fec4fe79c332cc6d5f80804/FLAG585f5baa0 [2022-11-16 12:35:47,239 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51a847b-0478-4887-9976-2fd01a027f82/bin/uautomizer-tPACEb0tL8/data/294b34bbc/6c1a90fa9fec4fe79c332cc6d5f80804 [2022-11-16 12:35:47,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:35:47,245 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:35:47,248 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:35:47,248 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:35:47,252 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:35:47,253 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:35:47" (1/1) ... [2022-11-16 12:35:47,254 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43e88509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:47, skipping insertion in model container [2022-11-16 12:35:47,255 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:35:47" (1/1) ... [2022-11-16 12:35:47,263 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:35:47,295 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:35:47,609 WARN L229 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_f51a847b-0478-4887-9976-2fd01a027f82/sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i[30176,30189] [2022-11-16 12:35:47,637 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:35:47,655 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:35:47,714 WARN L229 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_f51a847b-0478-4887-9976-2fd01a027f82/sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i[30176,30189] [2022-11-16 12:35:47,721 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:35:47,779 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:35:47,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:47 WrapperNode [2022-11-16 12:35:47,780 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:35:47,781 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:35:47,781 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:35:47,782 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:35:47,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:47" (1/1) ... [2022-11-16 12:35:47,816 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:47" (1/1) ... [2022-11-16 12:35:47,848 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 83 [2022-11-16 12:35:47,849 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:35:47,850 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:35:47,850 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:35:47,850 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:35:47,860 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:47" (1/1) ... [2022-11-16 12:35:47,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:47" (1/1) ... [2022-11-16 12:35:47,874 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:47" (1/1) ... [2022-11-16 12:35:47,875 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:47" (1/1) ... [2022-11-16 12:35:47,884 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:47" (1/1) ... [2022-11-16 12:35:47,889 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:47" (1/1) ... [2022-11-16 12:35:47,890 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:47" (1/1) ... [2022-11-16 12:35:47,891 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:47" (1/1) ... [2022-11-16 12:35:47,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:35:47,906 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:35:47,906 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:35:47,906 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:35:47,909 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:47" (1/1) ... [2022-11-16 12:35:47,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:35:47,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51a847b-0478-4887-9976-2fd01a027f82/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:35:47,941 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51a847b-0478-4887-9976-2fd01a027f82/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:35:47,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51a847b-0478-4887-9976-2fd01a027f82/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:35:47,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:35:47,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:35:47,986 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 12:35:47,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:35:47,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:35:47,987 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-16 12:35:47,987 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-16 12:35:47,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:35:47,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:35:47,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:35:47,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:35:47,989 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:35:48,114 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:35:48,116 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:35:48,406 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:35:48,415 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:35:48,415 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-16 12:35:48,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:35:48 BoogieIcfgContainer [2022-11-16 12:35:48,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:35:48,419 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:35:48,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:35:48,423 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:35:48,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:35:47" (1/3) ... [2022-11-16 12:35:48,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b078942 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:35:48, skipping insertion in model container [2022-11-16 12:35:48,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:47" (2/3) ... [2022-11-16 12:35:48,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b078942 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:35:48, skipping insertion in model container [2022-11-16 12:35:48,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:35:48" (3/3) ... [2022-11-16 12:35:48,426 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_01-simple_racing.i [2022-11-16 12:35:48,436 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:35:48,458 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:35:48,458 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-16 12:35:48,458 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:35:48,563 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-16 12:35:48,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 127 transitions, 262 flow [2022-11-16 12:35:48,721 INFO L130 PetriNetUnfolder]: 17/162 cut-off events. [2022-11-16 12:35:48,722 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 12:35:48,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 162 events. 17/162 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 369 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 80. Up to 4 conditions per place. [2022-11-16 12:35:48,728 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 127 transitions, 262 flow [2022-11-16 12:35:48,734 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 116 places, 124 transitions, 256 flow [2022-11-16 12:35:48,746 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:35:48,753 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;@3c19df30, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:35:48,753 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-16 12:35:48,773 INFO L130 PetriNetUnfolder]: 2/66 cut-off events. [2022-11-16 12:35:48,773 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:35:48,774 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:35:48,774 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] [2022-11-16 12:35:48,775 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)] === [2022-11-16 12:35:48,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:48,781 INFO L85 PathProgramCache]: Analyzing trace with hash 557832717, now seen corresponding path program 1 times [2022-11-16 12:35:48,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:48,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745716819] [2022-11-16 12:35:48,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:48,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:48,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:49,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:49,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:49,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745716819] [2022-11-16 12:35:49,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745716819] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:49,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:35:49,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:35:49,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909417890] [2022-11-16 12:35:49,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:49,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:35:49,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:49,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:35:49,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:35:49,292 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 127 [2022-11-16 12:35:49,298 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 124 transitions, 256 flow. Second operand has 4 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:49,298 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:35:49,299 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 127 [2022-11-16 12:35:49,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:35:49,419 INFO L130 PetriNetUnfolder]: 0/114 cut-off events. [2022-11-16 12:35:49,420 INFO L131 PetriNetUnfolder]: For 3/12 co-relation queries the response was YES. [2022-11-16 12:35:49,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 114 events. 0/114 cut-off events. For 3/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 103 event pairs, 0 based on Foata normal form. 40/146 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2022-11-16 12:35:49,422 INFO L137 encePairwiseOnDemand]: 109/127 looper letters, 10 selfloop transitions, 4 changer transitions 0/112 dead transitions. [2022-11-16 12:35:49,422 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 112 transitions, 260 flow [2022-11-16 12:35:49,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:35:49,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:35:49,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 552 transitions. [2022-11-16 12:35:49,445 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8692913385826772 [2022-11-16 12:35:49,445 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 552 transitions. [2022-11-16 12:35:49,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 552 transitions. [2022-11-16 12:35:49,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:35:49,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 552 transitions. [2022-11-16 12:35:49,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.4) internal successors, (552), 5 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:49,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:49,472 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:49,474 INFO L175 Difference]: Start difference. First operand has 116 places, 124 transitions, 256 flow. Second operand 5 states and 552 transitions. [2022-11-16 12:35:49,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 112 transitions, 260 flow [2022-11-16 12:35:49,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 112 transitions, 260 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:35:49,487 INFO L231 Difference]: Finished difference. Result has 118 places, 110 transitions, 240 flow [2022-11-16 12:35:49,490 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=240, PETRI_PLACES=118, PETRI_TRANSITIONS=110} [2022-11-16 12:35:49,494 INFO L288 CegarLoopForPetriNet]: 116 programPoint places, 2 predicate places. [2022-11-16 12:35:49,495 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 110 transitions, 240 flow [2022-11-16 12:35:49,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:49,495 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:35:49,496 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] [2022-11-16 12:35:49,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:35:49,497 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)] === [2022-11-16 12:35:49,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:49,499 INFO L85 PathProgramCache]: Analyzing trace with hash -72440655, now seen corresponding path program 1 times [2022-11-16 12:35:49,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:49,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959977783] [2022-11-16 12:35:49,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:49,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:49,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:49,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:49,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:49,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959977783] [2022-11-16 12:35:49,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959977783] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:49,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:35:49,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:35:49,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211580214] [2022-11-16 12:35:49,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:49,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:35:49,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:49,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:35:49,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:35:49,662 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 127 [2022-11-16 12:35:49,670 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 110 transitions, 240 flow. Second operand has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:49,670 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:35:49,670 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 127 [2022-11-16 12:35:49,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:35:49,733 INFO L130 PetriNetUnfolder]: 7/159 cut-off events. [2022-11-16 12:35:49,733 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-16 12:35:49,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 159 events. 7/159 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 367 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 138. Up to 11 conditions per place. [2022-11-16 12:35:49,735 INFO L137 encePairwiseOnDemand]: 121/127 looper letters, 10 selfloop transitions, 4 changer transitions 0/111 dead transitions. [2022-11-16 12:35:49,735 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 111 transitions, 270 flow [2022-11-16 12:35:49,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:35:49,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:35:49,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 526 transitions. [2022-11-16 12:35:49,738 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8283464566929134 [2022-11-16 12:35:49,738 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 526 transitions. [2022-11-16 12:35:49,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 526 transitions. [2022-11-16 12:35:49,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:35:49,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 526 transitions. [2022-11-16 12:35:49,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 105.2) internal successors, (526), 5 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:49,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:49,743 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:49,743 INFO L175 Difference]: Start difference. First operand has 118 places, 110 transitions, 240 flow. Second operand 5 states and 526 transitions. [2022-11-16 12:35:49,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 111 transitions, 270 flow [2022-11-16 12:35:49,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 111 transitions, 262 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:35:49,748 INFO L231 Difference]: Finished difference. Result has 116 places, 108 transitions, 236 flow [2022-11-16 12:35:49,748 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=236, PETRI_PLACES=116, PETRI_TRANSITIONS=108} [2022-11-16 12:35:49,749 INFO L288 CegarLoopForPetriNet]: 116 programPoint places, 0 predicate places. [2022-11-16 12:35:49,749 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 108 transitions, 236 flow [2022-11-16 12:35:49,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:49,750 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:35:49,750 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] [2022-11-16 12:35:49,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:35:49,755 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)] === [2022-11-16 12:35:49,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:49,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1085899652, now seen corresponding path program 1 times [2022-11-16 12:35:49,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:49,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120312952] [2022-11-16 12:35:49,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:49,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:49,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:35:49,827 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:35:49,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:35:49,885 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:35:49,885 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:35:49,886 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-11-16 12:35:49,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-11-16 12:35:49,890 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-11-16 12:35:49,891 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-11-16 12:35:49,891 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-11-16 12:35:49,891 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-11-16 12:35:49,891 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-11-16 12:35:49,892 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-11-16 12:35:49,892 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-11-16 12:35:49,892 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-11-16 12:35:49,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-11-16 12:35:49,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-11-16 12:35:49,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-11-16 12:35:49,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:35:49,894 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-16 12:35:49,898 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 12:35:49,898 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-16 12:35:49,957 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 12:35:49,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 165 transitions, 348 flow [2022-11-16 12:35:50,022 INFO L130 PetriNetUnfolder]: 31/272 cut-off events. [2022-11-16 12:35:50,022 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-16 12:35:50,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 272 events. 31/272 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 789 event pairs, 0 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 164. Up to 8 conditions per place. [2022-11-16 12:35:50,026 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 165 transitions, 348 flow [2022-11-16 12:35:50,028 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 165 transitions, 348 flow [2022-11-16 12:35:50,030 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:35:50,031 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;@3c19df30, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:35:50,031 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-16 12:35:50,038 INFO L130 PetriNetUnfolder]: 2/66 cut-off events. [2022-11-16 12:35:50,039 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:35:50,039 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:35:50,039 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] [2022-11-16 12:35:50,040 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)] === [2022-11-16 12:35:50,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:50,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1622363370, now seen corresponding path program 1 times [2022-11-16 12:35:50,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:50,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339096640] [2022-11-16 12:35:50,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:50,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:50,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:50,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:50,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:50,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339096640] [2022-11-16 12:35:50,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339096640] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:50,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:35:50,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:35:50,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136257815] [2022-11-16 12:35:50,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:50,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:35:50,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:50,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:35:50,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:35:50,113 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 165 [2022-11-16 12:35:50,114 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 165 transitions, 348 flow. Second operand has 4 states, 4 states have (on average 132.75) internal successors, (531), 4 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:50,114 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:35:50,114 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 165 [2022-11-16 12:35:50,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:35:50,266 INFO L130 PetriNetUnfolder]: 2/223 cut-off events. [2022-11-16 12:35:50,266 INFO L131 PetriNetUnfolder]: For 45/125 co-relation queries the response was YES. [2022-11-16 12:35:50,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266 conditions, 223 events. 2/223 cut-off events. For 45/125 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 520 event pairs, 0 based on Foata normal form. 125/324 useless extension candidates. Maximal degree in co-relation 141. Up to 21 conditions per place. [2022-11-16 12:35:50,268 INFO L137 encePairwiseOnDemand]: 141/165 looper letters, 19 selfloop transitions, 4 changer transitions 0/154 dead transitions. [2022-11-16 12:35:50,269 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 154 transitions, 372 flow [2022-11-16 12:35:50,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:35:50,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:35:50,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 717 transitions. [2022-11-16 12:35:50,272 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8690909090909091 [2022-11-16 12:35:50,272 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 717 transitions. [2022-11-16 12:35:50,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 717 transitions. [2022-11-16 12:35:50,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:35:50,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 717 transitions. [2022-11-16 12:35:50,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:50,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:50,279 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:50,279 INFO L175 Difference]: Start difference. First operand has 151 places, 165 transitions, 348 flow. Second operand 5 states and 717 transitions. [2022-11-16 12:35:50,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 154 transitions, 372 flow [2022-11-16 12:35:50,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 154 transitions, 372 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:35:50,284 INFO L231 Difference]: Finished difference. Result has 157 places, 150 transitions, 344 flow [2022-11-16 12:35:50,285 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=344, PETRI_PLACES=157, PETRI_TRANSITIONS=150} [2022-11-16 12:35:50,285 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 6 predicate places. [2022-11-16 12:35:50,286 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 150 transitions, 344 flow [2022-11-16 12:35:50,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 132.75) internal successors, (531), 4 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:50,287 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:35:50,287 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] [2022-11-16 12:35:50,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:35:50,288 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)] === [2022-11-16 12:35:50,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:50,288 INFO L85 PathProgramCache]: Analyzing trace with hash -2039262598, now seen corresponding path program 1 times [2022-11-16 12:35:50,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:50,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79883829] [2022-11-16 12:35:50,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:50,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:50,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:50,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:50,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:50,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79883829] [2022-11-16 12:35:50,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79883829] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:50,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:35:50,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:35:50,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982486480] [2022-11-16 12:35:50,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:50,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:35:50,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:50,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:35:50,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:35:50,367 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 165 [2022-11-16 12:35:50,368 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 150 transitions, 344 flow. Second operand has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:50,368 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:35:50,368 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 165 [2022-11-16 12:35:50,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:35:50,676 INFO L130 PetriNetUnfolder]: 172/1126 cut-off events. [2022-11-16 12:35:50,676 INFO L131 PetriNetUnfolder]: For 93/93 co-relation queries the response was YES. [2022-11-16 12:35:50,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1527 conditions, 1126 events. 172/1126 cut-off events. For 93/93 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 8292 event pairs, 102 based on Foata normal form. 0/971 useless extension candidates. Maximal degree in co-relation 1460. Up to 206 conditions per place. [2022-11-16 12:35:50,688 INFO L137 encePairwiseOnDemand]: 158/165 looper letters, 36 selfloop transitions, 6 changer transitions 0/173 dead transitions. [2022-11-16 12:35:50,689 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 173 transitions, 492 flow [2022-11-16 12:35:50,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:35:50,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:35:50,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 686 transitions. [2022-11-16 12:35:50,692 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8315151515151515 [2022-11-16 12:35:50,692 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 686 transitions. [2022-11-16 12:35:50,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 686 transitions. [2022-11-16 12:35:50,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:35:50,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 686 transitions. [2022-11-16 12:35:50,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 137.2) internal successors, (686), 5 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:50,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:50,698 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:50,699 INFO L175 Difference]: Start difference. First operand has 157 places, 150 transitions, 344 flow. Second operand 5 states and 686 transitions. [2022-11-16 12:35:50,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 173 transitions, 492 flow [2022-11-16 12:35:50,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 173 transitions, 490 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:35:50,707 INFO L231 Difference]: Finished difference. Result has 163 places, 155 transitions, 391 flow [2022-11-16 12:35:50,708 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=391, PETRI_PLACES=163, PETRI_TRANSITIONS=155} [2022-11-16 12:35:50,710 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 12 predicate places. [2022-11-16 12:35:50,710 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 155 transitions, 391 flow [2022-11-16 12:35:50,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:50,711 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:35:50,713 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] [2022-11-16 12:35:50,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:35:50,713 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)] === [2022-11-16 12:35:50,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:50,714 INFO L85 PathProgramCache]: Analyzing trace with hash -619765447, now seen corresponding path program 1 times [2022-11-16 12:35:50,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:50,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606833373] [2022-11-16 12:35:50,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:50,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:50,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:50,851 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:35:50,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:50,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606833373] [2022-11-16 12:35:50,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606833373] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:50,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:35:50,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:35:50,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506490023] [2022-11-16 12:35:50,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:50,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:35:50,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:50,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:35:50,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:35:50,856 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 165 [2022-11-16 12:35:50,858 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 155 transitions, 391 flow. Second operand has 4 states, 4 states have (on average 134.75) internal successors, (539), 4 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:50,858 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:35:50,859 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 165 [2022-11-16 12:35:50,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:35:50,972 INFO L130 PetriNetUnfolder]: 5/349 cut-off events. [2022-11-16 12:35:50,973 INFO L131 PetriNetUnfolder]: For 104/238 co-relation queries the response was YES. [2022-11-16 12:35:50,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 443 conditions, 349 events. 5/349 cut-off events. For 104/238 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1207 event pairs, 0 based on Foata normal form. 16/331 useless extension candidates. Maximal degree in co-relation 292. Up to 16 conditions per place. [2022-11-16 12:35:50,976 INFO L137 encePairwiseOnDemand]: 159/165 looper letters, 11 selfloop transitions, 8 changer transitions 0/155 dead transitions. [2022-11-16 12:35:50,977 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 155 transitions, 427 flow [2022-11-16 12:35:50,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:35:50,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:35:50,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 672 transitions. [2022-11-16 12:35:50,979 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8145454545454546 [2022-11-16 12:35:50,979 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 672 transitions. [2022-11-16 12:35:50,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 672 transitions. [2022-11-16 12:35:50,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:35:50,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 672 transitions. [2022-11-16 12:35:50,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 134.4) internal successors, (672), 5 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:50,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:50,986 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:50,986 INFO L175 Difference]: Start difference. First operand has 163 places, 155 transitions, 391 flow. Second operand 5 states and 672 transitions. [2022-11-16 12:35:50,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 155 transitions, 427 flow [2022-11-16 12:35:50,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 155 transitions, 424 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:35:50,992 INFO L231 Difference]: Finished difference. Result has 166 places, 155 transitions, 408 flow [2022-11-16 12:35:50,992 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=408, PETRI_PLACES=166, PETRI_TRANSITIONS=155} [2022-11-16 12:35:50,996 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 15 predicate places. [2022-11-16 12:35:50,996 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 155 transitions, 408 flow [2022-11-16 12:35:50,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.75) internal successors, (539), 4 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:50,998 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:35:50,998 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] [2022-11-16 12:35:50,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:35:50,999 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)] === [2022-11-16 12:35:51,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:51,000 INFO L85 PathProgramCache]: Analyzing trace with hash -2032859231, now seen corresponding path program 1 times [2022-11-16 12:35:51,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:51,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495901452] [2022-11-16 12:35:51,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:51,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:51,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:51,142 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:51,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:51,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495901452] [2022-11-16 12:35:51,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495901452] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:35:51,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700441526] [2022-11-16 12:35:51,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:51,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:51,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51a847b-0478-4887-9976-2fd01a027f82/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:35:51,150 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51a847b-0478-4887-9976-2fd01a027f82/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:35:51,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51a847b-0478-4887-9976-2fd01a027f82/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:35:51,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:51,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:35:51,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:35:51,337 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:51,337 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:35:51,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700441526] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:51,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:35:51,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-16 12:35:51,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575320891] [2022-11-16 12:35:51,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:51,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:35:51,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:51,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:35:51,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:35:51,341 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 165 [2022-11-16 12:35:51,342 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 155 transitions, 408 flow. Second operand has 5 states, 5 states have (on average 134.2) internal successors, (671), 5 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:51,342 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:35:51,343 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 165 [2022-11-16 12:35:51,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:35:51,437 INFO L130 PetriNetUnfolder]: 5/348 cut-off events. [2022-11-16 12:35:51,437 INFO L131 PetriNetUnfolder]: For 109/232 co-relation queries the response was YES. [2022-11-16 12:35:51,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451 conditions, 348 events. 5/348 cut-off events. For 109/232 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1189 event pairs, 0 based on Foata normal form. 6/320 useless extension candidates. Maximal degree in co-relation 293. Up to 23 conditions per place. [2022-11-16 12:35:51,440 INFO L137 encePairwiseOnDemand]: 161/165 looper letters, 13 selfloop transitions, 5 changer transitions 0/154 dead transitions. [2022-11-16 12:35:51,440 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 154 transitions, 440 flow [2022-11-16 12:35:51,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:35:51,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:35:51,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 539 transitions. [2022-11-16 12:35:51,443 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8166666666666667 [2022-11-16 12:35:51,443 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 539 transitions. [2022-11-16 12:35:51,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 539 transitions. [2022-11-16 12:35:51,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:35:51,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 539 transitions. [2022-11-16 12:35:51,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 134.75) internal successors, (539), 4 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:51,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:51,447 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:51,447 INFO L175 Difference]: Start difference. First operand has 166 places, 155 transitions, 408 flow. Second operand 4 states and 539 transitions. [2022-11-16 12:35:51,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 154 transitions, 440 flow [2022-11-16 12:35:51,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 154 transitions, 428 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:35:51,451 INFO L231 Difference]: Finished difference. Result has 165 places, 154 transitions, 402 flow [2022-11-16 12:35:51,452 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=402, PETRI_PLACES=165, PETRI_TRANSITIONS=154} [2022-11-16 12:35:51,452 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 14 predicate places. [2022-11-16 12:35:51,453 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 154 transitions, 402 flow [2022-11-16 12:35:51,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 134.2) internal successors, (671), 5 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:51,453 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:35:51,454 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] [2022-11-16 12:35:51,464 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51a847b-0478-4887-9976-2fd01a027f82/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 12:35:51,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51a847b-0478-4887-9976-2fd01a027f82/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-16 12:35:51,659 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 12:35:51,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:51,660 INFO L85 PathProgramCache]: Analyzing trace with hash 435641149, now seen corresponding path program 1 times [2022-11-16 12:35:51,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:51,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395399579] [2022-11-16 12:35:51,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:51,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:51,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:51,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:51,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:51,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395399579] [2022-11-16 12:35:51,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395399579] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:51,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:35:51,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:35:51,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278276223] [2022-11-16 12:35:51,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:51,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:35:51,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:51,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:35:51,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:35:51,775 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 165 [2022-11-16 12:35:51,776 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 154 transitions, 402 flow. Second operand has 6 states, 6 states have (on average 124.5) internal successors, (747), 6 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:51,776 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:35:51,776 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 165 [2022-11-16 12:35:51,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:35:52,206 INFO L130 PetriNetUnfolder]: 341/1632 cut-off events. [2022-11-16 12:35:52,207 INFO L131 PetriNetUnfolder]: For 301/302 co-relation queries the response was YES. [2022-11-16 12:35:52,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2540 conditions, 1632 events. 341/1632 cut-off events. For 301/302 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 13147 event pairs, 57 based on Foata normal form. 1/1460 useless extension candidates. Maximal degree in co-relation 2246. Up to 237 conditions per place. [2022-11-16 12:35:52,225 INFO L137 encePairwiseOnDemand]: 154/165 looper letters, 60 selfloop transitions, 19 changer transitions 0/204 dead transitions. [2022-11-16 12:35:52,225 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 204 transitions, 710 flow [2022-11-16 12:35:52,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:35:52,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:35:52,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1188 transitions. [2022-11-16 12:35:52,228 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8 [2022-11-16 12:35:52,229 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1188 transitions. [2022-11-16 12:35:52,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1188 transitions. [2022-11-16 12:35:52,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:35:52,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1188 transitions. [2022-11-16 12:35:52,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 132.0) internal successors, (1188), 9 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:52,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 165.0) internal successors, (1650), 10 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:52,237 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 165.0) internal successors, (1650), 10 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:52,237 INFO L175 Difference]: Start difference. First operand has 165 places, 154 transitions, 402 flow. Second operand 9 states and 1188 transitions. [2022-11-16 12:35:52,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 204 transitions, 710 flow [2022-11-16 12:35:52,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 204 transitions, 700 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:35:52,243 INFO L231 Difference]: Finished difference. Result has 176 places, 166 transitions, 518 flow [2022-11-16 12:35:52,243 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=518, PETRI_PLACES=176, PETRI_TRANSITIONS=166} [2022-11-16 12:35:52,244 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 25 predicate places. [2022-11-16 12:35:52,244 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 166 transitions, 518 flow [2022-11-16 12:35:52,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 124.5) internal successors, (747), 6 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:52,245 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:35:52,245 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] [2022-11-16 12:35:52,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:35:52,246 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 12:35:52,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:52,246 INFO L85 PathProgramCache]: Analyzing trace with hash 619974258, now seen corresponding path program 1 times [2022-11-16 12:35:52,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:52,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382999490] [2022-11-16 12:35:52,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:52,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:52,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:52,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:52,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:52,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382999490] [2022-11-16 12:35:52,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382999490] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:52,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:35:52,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:35:52,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100478352] [2022-11-16 12:35:52,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:52,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:35:52,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:52,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:35:52,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:35:52,351 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 165 [2022-11-16 12:35:52,352 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 166 transitions, 518 flow. Second operand has 6 states, 6 states have (on average 124.66666666666667) internal successors, (748), 6 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:52,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:35:52,353 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 165 [2022-11-16 12:35:52,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:35:52,815 INFO L130 PetriNetUnfolder]: 319/1739 cut-off events. [2022-11-16 12:35:52,816 INFO L131 PetriNetUnfolder]: For 1028/1049 co-relation queries the response was YES. [2022-11-16 12:35:52,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3045 conditions, 1739 events. 319/1739 cut-off events. For 1028/1049 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 14292 event pairs, 78 based on Foata normal form. 34/1597 useless extension candidates. Maximal degree in co-relation 2221. Up to 272 conditions per place. [2022-11-16 12:35:52,833 INFO L137 encePairwiseOnDemand]: 154/165 looper letters, 65 selfloop transitions, 19 changer transitions 0/209 dead transitions. [2022-11-16 12:35:52,834 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 209 transitions, 853 flow [2022-11-16 12:35:52,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:35:52,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:35:52,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1190 transitions. [2022-11-16 12:35:52,837 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8013468013468014 [2022-11-16 12:35:52,837 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1190 transitions. [2022-11-16 12:35:52,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1190 transitions. [2022-11-16 12:35:52,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:35:52,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1190 transitions. [2022-11-16 12:35:52,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 132.22222222222223) internal successors, (1190), 9 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:52,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 165.0) internal successors, (1650), 10 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:52,844 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 165.0) internal successors, (1650), 10 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:52,845 INFO L175 Difference]: Start difference. First operand has 176 places, 166 transitions, 518 flow. Second operand 9 states and 1190 transitions. [2022-11-16 12:35:52,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 209 transitions, 853 flow [2022-11-16 12:35:52,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 209 transitions, 812 flow, removed 11 selfloop flow, removed 4 redundant places. [2022-11-16 12:35:52,854 INFO L231 Difference]: Finished difference. Result has 182 places, 170 transitions, 565 flow [2022-11-16 12:35:52,854 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=565, PETRI_PLACES=182, PETRI_TRANSITIONS=170} [2022-11-16 12:35:52,855 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 31 predicate places. [2022-11-16 12:35:52,855 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 170 transitions, 565 flow [2022-11-16 12:35:52,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 124.66666666666667) internal successors, (748), 6 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:52,856 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:35:52,856 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] [2022-11-16 12:35:52,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:35:52,857 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)] === [2022-11-16 12:35:52,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:52,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1824606493, now seen corresponding path program 1 times [2022-11-16 12:35:52,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:52,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159729807] [2022-11-16 12:35:52,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:52,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:52,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:52,927 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:35:52,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:52,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159729807] [2022-11-16 12:35:52,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159729807] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:52,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:35:52,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:35:52,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390734449] [2022-11-16 12:35:52,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:52,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:35:52,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:52,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:35:52,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:35:52,930 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 165 [2022-11-16 12:35:52,931 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 170 transitions, 565 flow. Second operand has 4 states, 4 states have (on average 129.25) internal successors, (517), 4 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:52,931 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:35:52,932 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 165 [2022-11-16 12:35:52,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:35:53,309 INFO L130 PetriNetUnfolder]: 261/1641 cut-off events. [2022-11-16 12:35:53,310 INFO L131 PetriNetUnfolder]: For 1177/1224 co-relation queries the response was YES. [2022-11-16 12:35:53,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2994 conditions, 1641 events. 261/1641 cut-off events. For 1177/1224 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 13365 event pairs, 61 based on Foata normal form. 23/1516 useless extension candidates. Maximal degree in co-relation 2730. Up to 362 conditions per place. [2022-11-16 12:35:53,329 INFO L137 encePairwiseOnDemand]: 158/165 looper letters, 55 selfloop transitions, 7 changer transitions 0/196 dead transitions. [2022-11-16 12:35:53,330 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 196 transitions, 827 flow [2022-11-16 12:35:53,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:35:53,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:35:53,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 684 transitions. [2022-11-16 12:35:53,332 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8290909090909091 [2022-11-16 12:35:53,332 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 684 transitions. [2022-11-16 12:35:53,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 684 transitions. [2022-11-16 12:35:53,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:35:53,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 684 transitions. [2022-11-16 12:35:53,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 136.8) internal successors, (684), 5 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:53,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:53,337 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:53,337 INFO L175 Difference]: Start difference. First operand has 182 places, 170 transitions, 565 flow. Second operand 5 states and 684 transitions. [2022-11-16 12:35:53,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 196 transitions, 827 flow [2022-11-16 12:35:53,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 196 transitions, 799 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-16 12:35:53,346 INFO L231 Difference]: Finished difference. Result has 185 places, 173 transitions, 595 flow [2022-11-16 12:35:53,347 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=547, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=595, PETRI_PLACES=185, PETRI_TRANSITIONS=173} [2022-11-16 12:35:53,347 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 34 predicate places. [2022-11-16 12:35:53,348 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 173 transitions, 595 flow [2022-11-16 12:35:53,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 129.25) internal successors, (517), 4 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:53,348 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:35:53,348 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] [2022-11-16 12:35:53,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:35:53,349 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 12:35:53,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:53,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1636647252, now seen corresponding path program 1 times [2022-11-16 12:35:53,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:53,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172773232] [2022-11-16 12:35:53,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:53,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:53,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:35:53,462 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:35:53,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:35:53,480 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:35:53,480 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:35:53,481 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-16 12:35:53,481 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-11-16 12:35:53,481 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-11-16 12:35:53,481 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-11-16 12:35:53,482 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-11-16 12:35:53,482 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-11-16 12:35:53,482 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-11-16 12:35:53,482 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-11-16 12:35:53,483 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-11-16 12:35:53,483 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-11-16 12:35:53,483 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-11-16 12:35:53,483 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-11-16 12:35:53,483 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-11-16 12:35:53,484 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-11-16 12:35:53,484 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-11-16 12:35:53,484 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-11-16 12:35:53,484 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-11-16 12:35:53,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:35:53,485 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:35:53,485 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 12:35:53,485 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-16 12:35:53,525 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 12:35:53,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 184 places, 203 transitions, 436 flow [2022-11-16 12:35:53,596 INFO L130 PetriNetUnfolder]: 50/423 cut-off events. [2022-11-16 12:35:53,596 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-16 12:35:53,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451 conditions, 423 events. 50/423 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1395 event pairs, 1 based on Foata normal form. 0/337 useless extension candidates. Maximal degree in co-relation 280. Up to 16 conditions per place. [2022-11-16 12:35:53,601 INFO L82 GeneralOperation]: Start removeDead. Operand has 184 places, 203 transitions, 436 flow [2022-11-16 12:35:53,607 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 184 places, 203 transitions, 436 flow [2022-11-16 12:35:53,608 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:35:53,608 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;@3c19df30, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:35:53,609 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-16 12:35:53,614 INFO L130 PetriNetUnfolder]: 2/66 cut-off events. [2022-11-16 12:35:53,615 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:35:53,615 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:35:53,615 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] [2022-11-16 12:35:53,615 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)] === [2022-11-16 12:35:53,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:53,616 INFO L85 PathProgramCache]: Analyzing trace with hash 997819333, now seen corresponding path program 1 times [2022-11-16 12:35:53,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:53,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330531840] [2022-11-16 12:35:53,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:53,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:53,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:53,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:53,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:53,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330531840] [2022-11-16 12:35:53,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330531840] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:53,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:35:53,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:35:53,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240392875] [2022-11-16 12:35:53,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:53,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:35:53,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:53,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:35:53,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:35:53,699 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 203 [2022-11-16 12:35:53,699 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 203 transitions, 436 flow. Second operand has 4 states, 4 states have (on average 162.75) internal successors, (651), 4 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:53,700 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:35:53,700 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 203 [2022-11-16 12:35:53,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:35:53,815 INFO L130 PetriNetUnfolder]: 7/359 cut-off events. [2022-11-16 12:35:53,815 INFO L131 PetriNetUnfolder]: For 76/184 co-relation queries the response was YES. [2022-11-16 12:35:53,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 435 conditions, 359 events. 7/359 cut-off events. For 76/184 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1119 event pairs, 1 based on Foata normal form. 305/620 useless extension candidates. Maximal degree in co-relation 260. Up to 40 conditions per place. [2022-11-16 12:35:53,819 INFO L137 encePairwiseOnDemand]: 173/203 looper letters, 21 selfloop transitions, 4 changer transitions 0/186 dead transitions. [2022-11-16 12:35:53,820 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 186 transitions, 452 flow [2022-11-16 12:35:53,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:35:53,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:35:53,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 875 transitions. [2022-11-16 12:35:53,822 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8620689655172413 [2022-11-16 12:35:53,823 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 875 transitions. [2022-11-16 12:35:53,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 875 transitions. [2022-11-16 12:35:53,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:35:53,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 875 transitions. [2022-11-16 12:35:53,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:53,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:53,828 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:53,828 INFO L175 Difference]: Start difference. First operand has 184 places, 203 transitions, 436 flow. Second operand 5 states and 875 transitions. [2022-11-16 12:35:53,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 186 transitions, 452 flow [2022-11-16 12:35:53,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 186 transitions, 452 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:35:53,832 INFO L231 Difference]: Finished difference. Result has 190 places, 182 transitions, 420 flow [2022-11-16 12:35:53,833 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=420, PETRI_PLACES=190, PETRI_TRANSITIONS=182} [2022-11-16 12:35:53,834 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 6 predicate places. [2022-11-16 12:35:53,835 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 182 transitions, 420 flow [2022-11-16 12:35:53,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 162.75) internal successors, (651), 4 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:53,835 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:35:53,835 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] [2022-11-16 12:35:53,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 12:35:53,836 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)] === [2022-11-16 12:35:53,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:53,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1086599785, now seen corresponding path program 1 times [2022-11-16 12:35:53,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:53,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531321672] [2022-11-16 12:35:53,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:53,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:53,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:53,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:53,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:53,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531321672] [2022-11-16 12:35:53,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531321672] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:53,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:35:53,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:35:53,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47100631] [2022-11-16 12:35:53,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:53,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:35:53,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:53,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:35:53,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:35:53,904 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 203 [2022-11-16 12:35:53,905 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 182 transitions, 420 flow. Second operand has 4 states, 4 states have (on average 155.0) internal successors, (620), 4 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:53,905 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:35:53,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 203 [2022-11-16 12:35:53,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:35:55,583 INFO L130 PetriNetUnfolder]: 1866/8397 cut-off events. [2022-11-16 12:35:55,583 INFO L131 PetriNetUnfolder]: For 1108/1108 co-relation queries the response was YES. [2022-11-16 12:35:55,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11846 conditions, 8397 events. 1866/8397 cut-off events. For 1108/1108 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 94171 event pairs, 837 based on Foata normal form. 0/7379 useless extension candidates. Maximal degree in co-relation 11778. Up to 1995 conditions per place. [2022-11-16 12:35:55,685 INFO L137 encePairwiseOnDemand]: 195/203 looper letters, 52 selfloop transitions, 8 changer transitions 0/217 dead transitions. [2022-11-16 12:35:55,685 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 217 transitions, 652 flow [2022-11-16 12:35:55,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:35:55,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:35:55,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 834 transitions. [2022-11-16 12:35:55,688 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8216748768472907 [2022-11-16 12:35:55,688 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 834 transitions. [2022-11-16 12:35:55,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 834 transitions. [2022-11-16 12:35:55,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:35:55,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 834 transitions. [2022-11-16 12:35:55,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 166.8) internal successors, (834), 5 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:55,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:55,694 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:55,695 INFO L175 Difference]: Start difference. First operand has 190 places, 182 transitions, 420 flow. Second operand 5 states and 834 transitions. [2022-11-16 12:35:55,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 217 transitions, 652 flow [2022-11-16 12:35:55,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 217 transitions, 650 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:35:55,701 INFO L231 Difference]: Finished difference. Result has 196 places, 189 transitions, 482 flow [2022-11-16 12:35:55,702 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=482, PETRI_PLACES=196, PETRI_TRANSITIONS=189} [2022-11-16 12:35:55,702 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 12 predicate places. [2022-11-16 12:35:55,703 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 189 transitions, 482 flow [2022-11-16 12:35:55,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 155.0) internal successors, (620), 4 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:55,703 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:35:55,704 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] [2022-11-16 12:35:55,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 12:35:55,704 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)] === [2022-11-16 12:35:55,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:55,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1138532812, now seen corresponding path program 1 times [2022-11-16 12:35:55,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:55,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702609833] [2022-11-16 12:35:55,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:55,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:55,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:55,754 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:35:55,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:55,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702609833] [2022-11-16 12:35:55,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702609833] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:55,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:35:55,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:35:55,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877293222] [2022-11-16 12:35:55,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:55,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:35:55,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:55,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:35:55,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:35:55,758 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 203 [2022-11-16 12:35:55,759 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 189 transitions, 482 flow. Second operand has 4 states, 4 states have (on average 164.75) internal successors, (659), 4 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:55,759 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:35:55,759 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 203 [2022-11-16 12:35:55,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:35:56,041 INFO L130 PetriNetUnfolder]: 37/862 cut-off events. [2022-11-16 12:35:56,041 INFO L131 PetriNetUnfolder]: For 289/708 co-relation queries the response was YES. [2022-11-16 12:35:56,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1095 conditions, 862 events. 37/862 cut-off events. For 289/708 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5217 event pairs, 7 based on Foata normal form. 41/792 useless extension candidates. Maximal degree in co-relation 774. Up to 52 conditions per place. [2022-11-16 12:35:56,054 INFO L137 encePairwiseOnDemand]: 197/203 looper letters, 13 selfloop transitions, 8 changer transitions 0/189 dead transitions. [2022-11-16 12:35:56,055 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 189 transitions, 522 flow [2022-11-16 12:35:56,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:35:56,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:35:56,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 824 transitions. [2022-11-16 12:35:56,058 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8118226600985222 [2022-11-16 12:35:56,058 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 824 transitions. [2022-11-16 12:35:56,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 824 transitions. [2022-11-16 12:35:56,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:35:56,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 824 transitions. [2022-11-16 12:35:56,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 164.8) internal successors, (824), 5 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:56,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:56,064 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:56,065 INFO L175 Difference]: Start difference. First operand has 196 places, 189 transitions, 482 flow. Second operand 5 states and 824 transitions. [2022-11-16 12:35:56,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 189 transitions, 522 flow [2022-11-16 12:35:56,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 189 transitions, 518 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:35:56,070 INFO L231 Difference]: Finished difference. Result has 199 places, 189 transitions, 498 flow [2022-11-16 12:35:56,070 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=498, PETRI_PLACES=199, PETRI_TRANSITIONS=189} [2022-11-16 12:35:56,071 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 15 predicate places. [2022-11-16 12:35:56,071 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 189 transitions, 498 flow [2022-11-16 12:35:56,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 164.75) internal successors, (659), 4 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:56,072 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:35:56,072 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] [2022-11-16 12:35:56,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 12:35:56,072 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)] === [2022-11-16 12:35:56,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:56,073 INFO L85 PathProgramCache]: Analyzing trace with hash 934779449, now seen corresponding path program 1 times [2022-11-16 12:35:56,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:56,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954499465] [2022-11-16 12:35:56,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:56,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:56,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:56,188 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:56,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:56,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954499465] [2022-11-16 12:35:56,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954499465] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:35:56,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847165685] [2022-11-16 12:35:56,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:56,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:56,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51a847b-0478-4887-9976-2fd01a027f82/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:35:56,191 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51a847b-0478-4887-9976-2fd01a027f82/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:35:56,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51a847b-0478-4887-9976-2fd01a027f82/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:35:56,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:56,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:35:56,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:35:56,369 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:56,369 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:35:56,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847165685] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:56,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:35:56,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-16 12:35:56,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967508668] [2022-11-16 12:35:56,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:56,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:35:56,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:56,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:35:56,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:35:56,373 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 203 [2022-11-16 12:35:56,375 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 189 transitions, 498 flow. Second operand has 5 states, 5 states have (on average 164.2) internal successors, (821), 5 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:56,375 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:35:56,375 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 203 [2022-11-16 12:35:56,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:35:56,616 INFO L130 PetriNetUnfolder]: 37/860 cut-off events. [2022-11-16 12:35:56,616 INFO L131 PetriNetUnfolder]: For 291/671 co-relation queries the response was YES. [2022-11-16 12:35:56,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1104 conditions, 860 events. 37/860 cut-off events. For 291/671 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5161 event pairs, 7 based on Foata normal form. 15/764 useless extension candidates. Maximal degree in co-relation 774. Up to 62 conditions per place. [2022-11-16 12:35:56,628 INFO L137 encePairwiseOnDemand]: 199/203 looper letters, 15 selfloop transitions, 5 changer transitions 0/188 dead transitions. [2022-11-16 12:35:56,629 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 188 transitions, 534 flow [2022-11-16 12:35:56,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:35:56,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:35:56,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 661 transitions. [2022-11-16 12:35:56,631 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8140394088669951 [2022-11-16 12:35:56,631 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 661 transitions. [2022-11-16 12:35:56,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 661 transitions. [2022-11-16 12:35:56,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:35:56,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 661 transitions. [2022-11-16 12:35:56,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 165.25) internal successors, (661), 4 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:56,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 203.0) internal successors, (1015), 5 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:56,637 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 203.0) internal successors, (1015), 5 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:56,637 INFO L175 Difference]: Start difference. First operand has 199 places, 189 transitions, 498 flow. Second operand 4 states and 661 transitions. [2022-11-16 12:35:56,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 188 transitions, 534 flow [2022-11-16 12:35:56,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 188 transitions, 522 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:35:56,641 INFO L231 Difference]: Finished difference. Result has 198 places, 188 transitions, 492 flow [2022-11-16 12:35:56,642 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=492, PETRI_PLACES=198, PETRI_TRANSITIONS=188} [2022-11-16 12:35:56,643 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 14 predicate places. [2022-11-16 12:35:56,643 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 188 transitions, 492 flow [2022-11-16 12:35:56,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 164.2) internal successors, (821), 5 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:56,644 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:35:56,644 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] [2022-11-16 12:35:56,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51a847b-0478-4887-9976-2fd01a027f82/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:35:56,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51a847b-0478-4887-9976-2fd01a027f82/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:56,850 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 12:35:56,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:56,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1738330175, now seen corresponding path program 1 times [2022-11-16 12:35:56,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:56,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506479736] [2022-11-16 12:35:56,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:56,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:56,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:56,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:56,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:56,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506479736] [2022-11-16 12:35:56,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506479736] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:56,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:35:56,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:35:56,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554587545] [2022-11-16 12:35:56,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:56,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:35:56,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:56,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:35:56,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:35:56,960 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 203 [2022-11-16 12:35:56,962 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 188 transitions, 492 flow. Second operand has 6 states, 6 states have (on average 150.5) internal successors, (903), 6 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:56,962 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:35:56,962 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 203 [2022-11-16 12:35:56,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:36:00,158 INFO L130 PetriNetUnfolder]: 4005/14521 cut-off events. [2022-11-16 12:36:00,161 INFO L131 PetriNetUnfolder]: For 4223/4278 co-relation queries the response was YES. [2022-11-16 12:36:00,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23598 conditions, 14521 events. 4005/14521 cut-off events. For 4223/4278 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 171600 event pairs, 1089 based on Foata normal form. 27/12799 useless extension candidates. Maximal degree in co-relation 14874. Up to 2727 conditions per place. [2022-11-16 12:36:00,357 INFO L137 encePairwiseOnDemand]: 190/203 looper letters, 100 selfloop transitions, 27 changer transitions 0/278 dead transitions. [2022-11-16 12:36:00,357 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 278 transitions, 1072 flow [2022-11-16 12:36:00,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:36:00,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:36:00,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1470 transitions. [2022-11-16 12:36:00,362 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8045977011494253 [2022-11-16 12:36:00,362 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1470 transitions. [2022-11-16 12:36:00,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1470 transitions. [2022-11-16 12:36:00,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:36:00,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1470 transitions. [2022-11-16 12:36:00,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 163.33333333333334) internal successors, (1470), 9 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:00,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 203.0) internal successors, (2030), 10 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:00,373 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 203.0) internal successors, (2030), 10 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:00,373 INFO L175 Difference]: Start difference. First operand has 198 places, 188 transitions, 492 flow. Second operand 9 states and 1470 transitions. [2022-11-16 12:36:00,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 278 transitions, 1072 flow [2022-11-16 12:36:00,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 278 transitions, 1062 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:36:00,389 INFO L231 Difference]: Finished difference. Result has 209 places, 207 transitions, 686 flow [2022-11-16 12:36:00,390 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=686, PETRI_PLACES=209, PETRI_TRANSITIONS=207} [2022-11-16 12:36:00,391 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 25 predicate places. [2022-11-16 12:36:00,391 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 207 transitions, 686 flow [2022-11-16 12:36:00,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 150.5) internal successors, (903), 6 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:00,392 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:36:00,392 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] [2022-11-16 12:36:00,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 12:36:00,393 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 12:36:00,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:00,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1946340225, now seen corresponding path program 1 times [2022-11-16 12:36:00,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:00,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915155770] [2022-11-16 12:36:00,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:00,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:00,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:00,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:36:00,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:00,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915155770] [2022-11-16 12:36:00,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915155770] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:36:00,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:36:00,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:36:00,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564026558] [2022-11-16 12:36:00,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:36:00,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:36:00,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:00,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:36:00,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:36:00,505 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 203 [2022-11-16 12:36:00,506 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 207 transitions, 686 flow. Second operand has 6 states, 6 states have (on average 150.66666666666666) internal successors, (904), 6 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:00,506 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:36:00,507 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 203 [2022-11-16 12:36:00,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:36:02,976 INFO L130 PetriNetUnfolder]: 3800/13805 cut-off events. [2022-11-16 12:36:02,976 INFO L131 PetriNetUnfolder]: For 13134/13294 co-relation queries the response was YES. [2022-11-16 12:36:03,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27407 conditions, 13805 events. 3800/13805 cut-off events. For 13134/13294 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 163666 event pairs, 1109 based on Foata normal form. 226/12652 useless extension candidates. Maximal degree in co-relation 18527. Up to 2976 conditions per place. [2022-11-16 12:36:03,155 INFO L137 encePairwiseOnDemand]: 190/203 looper letters, 107 selfloop transitions, 27 changer transitions 0/285 dead transitions. [2022-11-16 12:36:03,155 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 285 transitions, 1331 flow [2022-11-16 12:36:03,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:36:03,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:36:03,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1468 transitions. [2022-11-16 12:36:03,160 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8035030103995622 [2022-11-16 12:36:03,160 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1468 transitions. [2022-11-16 12:36:03,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1468 transitions. [2022-11-16 12:36:03,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:36:03,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1468 transitions. [2022-11-16 12:36:03,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 163.11111111111111) internal successors, (1468), 9 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:03,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 203.0) internal successors, (2030), 10 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:03,171 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 203.0) internal successors, (2030), 10 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:03,171 INFO L175 Difference]: Start difference. First operand has 209 places, 207 transitions, 686 flow. Second operand 9 states and 1468 transitions. [2022-11-16 12:36:03,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 285 transitions, 1331 flow [2022-11-16 12:36:03,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 285 transitions, 1264 flow, removed 20 selfloop flow, removed 4 redundant places. [2022-11-16 12:36:03,222 INFO L231 Difference]: Finished difference. Result has 215 places, 215 transitions, 767 flow [2022-11-16 12:36:03,223 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=635, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=767, PETRI_PLACES=215, PETRI_TRANSITIONS=215} [2022-11-16 12:36:03,223 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 31 predicate places. [2022-11-16 12:36:03,224 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 215 transitions, 767 flow [2022-11-16 12:36:03,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 150.66666666666666) internal successors, (904), 6 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:03,225 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:36:03,225 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] [2022-11-16 12:36:03,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 12:36:03,226 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 12:36:03,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:03,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1874874608, now seen corresponding path program 1 times [2022-11-16 12:36:03,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:03,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003242348] [2022-11-16 12:36:03,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:03,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:03,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:03,304 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:36:03,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:03,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003242348] [2022-11-16 12:36:03,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003242348] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:36:03,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:36:03,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:36:03,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153497345] [2022-11-16 12:36:03,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:36:03,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:36:03,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:03,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:36:03,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:36:03,309 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 203 [2022-11-16 12:36:03,310 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 215 transitions, 767 flow. Second operand has 4 states, 4 states have (on average 155.25) internal successors, (621), 4 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:03,310 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:36:03,311 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 203 [2022-11-16 12:36:03,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:36:06,398 INFO L130 PetriNetUnfolder]: 4301/18335 cut-off events. [2022-11-16 12:36:06,399 INFO L131 PetriNetUnfolder]: For 17048/17450 co-relation queries the response was YES. [2022-11-16 12:36:06,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35989 conditions, 18335 events. 4301/18335 cut-off events. For 17048/17450 co-relation queries the response was YES. Maximal size of possible extension queue 749. Compared 235515 event pairs, 1616 based on Foata normal form. 225/16570 useless extension candidates. Maximal degree in co-relation 27835. Up to 4746 conditions per place. [2022-11-16 12:36:06,686 INFO L137 encePairwiseOnDemand]: 195/203 looper letters, 93 selfloop transitions, 11 changer transitions 0/264 dead transitions. [2022-11-16 12:36:06,686 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 264 transitions, 1283 flow [2022-11-16 12:36:06,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:36:06,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:36:06,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 832 transitions. [2022-11-16 12:36:06,689 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.819704433497537 [2022-11-16 12:36:06,690 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 832 transitions. [2022-11-16 12:36:06,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 832 transitions. [2022-11-16 12:36:06,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:36:06,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 832 transitions. [2022-11-16 12:36:06,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 166.4) internal successors, (832), 5 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:06,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:06,696 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:06,697 INFO L175 Difference]: Start difference. First operand has 215 places, 215 transitions, 767 flow. Second operand 5 states and 832 transitions. [2022-11-16 12:36:06,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 264 transitions, 1283 flow [2022-11-16 12:36:06,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 264 transitions, 1241 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-16 12:36:06,933 INFO L231 Difference]: Finished difference. Result has 218 places, 220 transitions, 817 flow [2022-11-16 12:36:06,933 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=742, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=817, PETRI_PLACES=218, PETRI_TRANSITIONS=220} [2022-11-16 12:36:06,934 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 34 predicate places. [2022-11-16 12:36:06,934 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 220 transitions, 817 flow [2022-11-16 12:36:06,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 155.25) internal successors, (621), 4 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:06,935 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:36:06,935 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, 1, 1, 1] [2022-11-16 12:36:06,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 12:36:06,936 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 12:36:06,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:06,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1466327854, now seen corresponding path program 1 times [2022-11-16 12:36:06,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:06,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978621561] [2022-11-16 12:36:06,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:06,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:06,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:07,031 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:36:07,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:07,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978621561] [2022-11-16 12:36:07,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978621561] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:36:07,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:36:07,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:36:07,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856357769] [2022-11-16 12:36:07,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:36:07,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:36:07,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:07,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:36:07,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:36:07,036 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 203 [2022-11-16 12:36:07,037 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 220 transitions, 817 flow. Second operand has 6 states, 6 states have (on average 150.66666666666666) internal successors, (904), 6 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:07,037 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:36:07,037 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 203 [2022-11-16 12:36:07,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:36:13,354 INFO L130 PetriNetUnfolder]: 9325/35764 cut-off events. [2022-11-16 12:36:13,354 INFO L131 PetriNetUnfolder]: For 32404/33655 co-relation queries the response was YES. [2022-11-16 12:36:13,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71620 conditions, 35764 events. 9325/35764 cut-off events. For 32404/33655 co-relation queries the response was YES. Maximal size of possible extension queue 1621. Compared 502610 event pairs, 3517 based on Foata normal form. 444/32613 useless extension candidates. Maximal degree in co-relation 49371. Up to 7085 conditions per place. [2022-11-16 12:36:14,061 INFO L137 encePairwiseOnDemand]: 190/203 looper letters, 149 selfloop transitions, 46 changer transitions 0/350 dead transitions. [2022-11-16 12:36:14,062 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 350 transitions, 1963 flow [2022-11-16 12:36:14,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:36:14,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:36:14,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1467 transitions. [2022-11-16 12:36:14,068 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8029556650246306 [2022-11-16 12:36:14,068 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1467 transitions. [2022-11-16 12:36:14,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1467 transitions. [2022-11-16 12:36:14,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:36:14,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1467 transitions. [2022-11-16 12:36:14,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 163.0) internal successors, (1467), 9 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:14,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 203.0) internal successors, (2030), 10 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:14,081 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 203.0) internal successors, (2030), 10 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:14,082 INFO L175 Difference]: Start difference. First operand has 218 places, 220 transitions, 817 flow. Second operand 9 states and 1467 transitions. [2022-11-16 12:36:14,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 350 transitions, 1963 flow [2022-11-16 12:36:14,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 350 transitions, 1957 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:36:14,315 INFO L231 Difference]: Finished difference. Result has 231 places, 255 transitions, 1301 flow [2022-11-16 12:36:14,315 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=812, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1301, PETRI_PLACES=231, PETRI_TRANSITIONS=255} [2022-11-16 12:36:14,316 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 47 predicate places. [2022-11-16 12:36:14,316 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 255 transitions, 1301 flow [2022-11-16 12:36:14,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 150.66666666666666) internal successors, (904), 6 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:14,317 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:36:14,317 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, 1, 1, 1, 1] [2022-11-16 12:36:14,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 12:36:14,318 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 12:36:14,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:14,318 INFO L85 PathProgramCache]: Analyzing trace with hash 978815422, now seen corresponding path program 1 times [2022-11-16 12:36:14,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:14,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282483033] [2022-11-16 12:36:14,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:14,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:14,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:14,569 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:36:14,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:14,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282483033] [2022-11-16 12:36:14,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282483033] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:36:14,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65144840] [2022-11-16 12:36:14,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:14,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:14,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51a847b-0478-4887-9976-2fd01a027f82/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:36:14,572 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51a847b-0478-4887-9976-2fd01a027f82/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:36:14,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51a847b-0478-4887-9976-2fd01a027f82/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:36:14,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:14,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:36:14,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:36:14,837 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:36:14,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:36:14,969 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:36:14,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65144840] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:36:14,970 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:36:14,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 14 [2022-11-16 12:36:14,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161845356] [2022-11-16 12:36:14,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:36:14,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 12:36:14,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:14,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 12:36:14,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:36:14,976 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 203 [2022-11-16 12:36:14,979 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 255 transitions, 1301 flow. Second operand has 14 states, 14 states have (on average 119.5) internal successors, (1673), 14 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:14,979 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:36:14,979 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 203 [2022-11-16 12:36:14,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:36:23,260 INFO L130 PetriNetUnfolder]: 8737/33379 cut-off events. [2022-11-16 12:36:23,260 INFO L131 PetriNetUnfolder]: For 46137/46847 co-relation queries the response was YES. [2022-11-16 12:36:23,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70247 conditions, 33379 events. 8737/33379 cut-off events. For 46137/46847 co-relation queries the response was YES. Maximal size of possible extension queue 1128. Compared 438340 event pairs, 1183 based on Foata normal form. 2344/33358 useless extension candidates. Maximal degree in co-relation 57302. Up to 6270 conditions per place. [2022-11-16 12:36:23,672 INFO L137 encePairwiseOnDemand]: 178/203 looper letters, 489 selfloop transitions, 232 changer transitions 0/843 dead transitions. [2022-11-16 12:36:23,672 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 843 transitions, 5590 flow [2022-11-16 12:36:23,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-16 12:36:23,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-16 12:36:23,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 5729 transitions. [2022-11-16 12:36:23,686 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6414017017465293 [2022-11-16 12:36:23,687 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 5729 transitions. [2022-11-16 12:36:23,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 5729 transitions. [2022-11-16 12:36:23,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:36:23,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 5729 transitions. [2022-11-16 12:36:23,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 130.20454545454547) internal successors, (5729), 44 states have internal predecessors, (5729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:23,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 203.0) internal successors, (9135), 45 states have internal predecessors, (9135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:23,729 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 203.0) internal successors, (9135), 45 states have internal predecessors, (9135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:23,729 INFO L175 Difference]: Start difference. First operand has 231 places, 255 transitions, 1301 flow. Second operand 44 states and 5729 transitions. [2022-11-16 12:36:23,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 843 transitions, 5590 flow [2022-11-16 12:36:24,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 843 transitions, 5523 flow, removed 17 selfloop flow, removed 3 redundant places. [2022-11-16 12:36:24,064 INFO L231 Difference]: Finished difference. Result has 290 places, 444 transitions, 3414 flow [2022-11-16 12:36:24,065 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=1257, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=3414, PETRI_PLACES=290, PETRI_TRANSITIONS=444} [2022-11-16 12:36:24,066 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 106 predicate places. [2022-11-16 12:36:24,066 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 444 transitions, 3414 flow [2022-11-16 12:36:24,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 119.5) internal successors, (1673), 14 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:24,067 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:36:24,067 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, 1, 1, 1, 1] [2022-11-16 12:36:24,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51a847b-0478-4887-9976-2fd01a027f82/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:36:24,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51a847b-0478-4887-9976-2fd01a027f82/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:24,274 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 12:36:24,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:24,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1788477512, now seen corresponding path program 1 times [2022-11-16 12:36:24,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:24,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828671307] [2022-11-16 12:36:24,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:24,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:24,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:24,384 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:36:24,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:24,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828671307] [2022-11-16 12:36:24,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828671307] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:36:24,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:36:24,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:36:24,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621484762] [2022-11-16 12:36:24,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:36:24,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:36:24,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:24,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:36:24,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:36:24,388 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 203 [2022-11-16 12:36:24,389 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 444 transitions, 3414 flow. Second operand has 6 states, 6 states have (on average 150.83333333333334) internal successors, (905), 6 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:24,389 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:36:24,389 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 203 [2022-11-16 12:36:24,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:36:30,641 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([786] t_funEXIT-->L711-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem14#1_11| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of3ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} AuxVars[] AssignedVars[][405], [1005#(<= 1 |t_funThread2of3ForFork0_#t~post7|), 419#true, 455#(and (<= |t_funThread2of3ForFork0_#t~post7| 1) (<= ~global~0 1)), Black: 404#(<= ~global~0 1), Black: 411#(and (<= |t_funThread1of3ForFork0_#t~post7| 1) (<= ~global~0 1)), Black: 405#(<= |t_funThread1of3ForFork0_#t~post7| 1), Black: 403#(= |t_funThread1of3ForFork0_#t~post5| 0), Black: 409#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1)), Black: 430#(and (<= 1 ~global~0) (<= 1 |t_funThread1of3ForFork0_#t~post7|)), Black: 423#(<= 1 ~global~0), 400#true, t_funThread1of3ForFork0NotInUse, t_funThread2of3ForFork0InUse, t_funThread3of3ForFork0NotInUse, 898#(and (<= |~#mutex1~0.base| 4) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 437#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 436#(= ~global~0 0), Black: 439#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post5| 0)), Black: 189#(= |ULTIMATE.start_main_~i~0#1| 0), Black: 190#(= |ULTIMATE.start_main_#t~post8#1| 0), Black: 192#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), Black: 449#(<= |t_funThread2of3ForFork0_#t~post7| 1), Black: 444#true, Black: 447#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 200#(= |t_funThread1of3ForFork0_#t~post5| 0), 105#L702-16true, Black: 199#(= ~global~0 0), Black: 448#(<= ~global~0 1), Black: 453#(and (<= ~global~0 1) (= |t_funThread2of3ForFork0_#t~post5| 0)), Black: 202#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (= ~global~0 0)), Black: 951#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483647) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 941#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 908#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (<= ~global~0 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 939#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 906#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 916#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (< ~global~0 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 935#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (<= |t_funThread1of3ForFork0_#t~post5| 0) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 963#(and (<= |~#mutex1~0.base| 4) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 947#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 912#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 914#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (< ~global~0 2147483646) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 943#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 969#(and (<= |~#mutex1~0.base| 4) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483647) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 957#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (< ~global~0 2147483647) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 953#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483647) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 933#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 967#(and (<= |~#mutex1~0.base| 4) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 959#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), 5#L711-5true, 207#true]) [2022-11-16 12:36:30,641 INFO L383 tUnfolder$Statistics]: this new event has 170 ancestors and is cut-off event [2022-11-16 12:36:30,641 INFO L386 tUnfolder$Statistics]: existing Event has 123 ancestors and is cut-off event [2022-11-16 12:36:30,641 INFO L386 tUnfolder$Statistics]: existing Event has 123 ancestors and is cut-off event [2022-11-16 12:36:30,641 INFO L386 tUnfolder$Statistics]: existing Event has 123 ancestors and is cut-off event [2022-11-16 12:36:30,676 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([786] t_funEXIT-->L711-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem14#1_11| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of3ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} AuxVars[] AssignedVars[][219], [419#true, Black: 404#(<= ~global~0 1), Black: 411#(and (<= |t_funThread1of3ForFork0_#t~post7| 1) (<= ~global~0 1)), 1000#true, Black: 405#(<= |t_funThread1of3ForFork0_#t~post7| 1), Black: 403#(= |t_funThread1of3ForFork0_#t~post5| 0), Black: 409#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1)), Black: 430#(and (<= 1 ~global~0) (<= 1 |t_funThread1of3ForFork0_#t~post7|)), Black: 423#(<= 1 ~global~0), 400#true, t_funThread1of3ForFork0NotInUse, 141#L702-17true, t_funThread2of3ForFork0InUse, t_funThread3of3ForFork0NotInUse, 898#(and (<= |~#mutex1~0.base| 4) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 437#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 436#(= ~global~0 0), Black: 439#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post5| 0)), Black: 189#(= |ULTIMATE.start_main_~i~0#1| 0), Black: 190#(= |ULTIMATE.start_main_#t~post8#1| 0), Black: 192#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), Black: 455#(and (<= |t_funThread2of3ForFork0_#t~post7| 1) (<= ~global~0 1)), Black: 449#(<= |t_funThread2of3ForFork0_#t~post7| 1), Black: 444#true, Black: 447#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 200#(= |t_funThread1of3ForFork0_#t~post5| 0), Black: 199#(= ~global~0 0), Black: 453#(and (<= ~global~0 1) (= |t_funThread2of3ForFork0_#t~post5| 0)), Black: 202#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (= ~global~0 0)), Black: 951#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483647) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 941#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 908#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (<= ~global~0 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 939#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), 448#(<= ~global~0 1), Black: 906#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 916#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (< ~global~0 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 935#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (<= |t_funThread1of3ForFork0_#t~post5| 0) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 963#(and (<= |~#mutex1~0.base| 4) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 947#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 912#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 914#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (< ~global~0 2147483646) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 943#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 969#(and (<= |~#mutex1~0.base| 4) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483647) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 957#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (< ~global~0 2147483647) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 953#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483647) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 933#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 967#(and (<= |~#mutex1~0.base| 4) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 959#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), 5#L711-5true, 207#true]) [2022-11-16 12:36:30,676 INFO L383 tUnfolder$Statistics]: this new event has 171 ancestors and is cut-off event [2022-11-16 12:36:30,676 INFO L386 tUnfolder$Statistics]: existing Event has 124 ancestors and is cut-off event [2022-11-16 12:36:30,677 INFO L386 tUnfolder$Statistics]: existing Event has 124 ancestors and is cut-off event [2022-11-16 12:36:30,677 INFO L386 tUnfolder$Statistics]: existing Event has 124 ancestors and is cut-off event [2022-11-16 12:36:30,732 INFO L130 PetriNetUnfolder]: 3582/26290 cut-off events. [2022-11-16 12:36:30,732 INFO L131 PetriNetUnfolder]: For 61279/62548 co-relation queries the response was YES. [2022-11-16 12:36:31,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53327 conditions, 26290 events. 3582/26290 cut-off events. For 61279/62548 co-relation queries the response was YES. Maximal size of possible extension queue 818. Compared 385840 event pairs, 1411 based on Foata normal form. 424/23652 useless extension candidates. Maximal degree in co-relation 52335. Up to 4589 conditions per place. [2022-11-16 12:36:31,129 INFO L137 encePairwiseOnDemand]: 190/203 looper letters, 219 selfloop transitions, 63 changer transitions 0/518 dead transitions. [2022-11-16 12:36:31,130 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 518 transitions, 4571 flow [2022-11-16 12:36:31,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:36:31,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:36:31,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1461 transitions. [2022-11-16 12:36:31,133 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7996715927750411 [2022-11-16 12:36:31,133 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1461 transitions. [2022-11-16 12:36:31,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1461 transitions. [2022-11-16 12:36:31,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:36:31,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1461 transitions. [2022-11-16 12:36:31,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 162.33333333333334) internal successors, (1461), 9 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:31,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 203.0) internal successors, (2030), 10 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:31,141 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 203.0) internal successors, (2030), 10 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:31,141 INFO L175 Difference]: Start difference. First operand has 290 places, 444 transitions, 3414 flow. Second operand 9 states and 1461 transitions. [2022-11-16 12:36:31,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 518 transitions, 4571 flow [2022-11-16 12:36:31,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 518 transitions, 4121 flow, removed 178 selfloop flow, removed 8 redundant places. [2022-11-16 12:36:31,579 INFO L231 Difference]: Finished difference. Result has 291 places, 446 transitions, 3169 flow [2022-11-16 12:36:31,579 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=2999, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3169, PETRI_PLACES=291, PETRI_TRANSITIONS=446} [2022-11-16 12:36:31,580 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 107 predicate places. [2022-11-16 12:36:31,580 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 446 transitions, 3169 flow [2022-11-16 12:36:31,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 150.83333333333334) internal successors, (905), 6 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:31,581 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:36:31,581 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, 1, 1, 1, 1] [2022-11-16 12:36:31,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 12:36:31,581 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 12:36:31,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:31,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1318470136, now seen corresponding path program 1 times [2022-11-16 12:36:31,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:31,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071709492] [2022-11-16 12:36:31,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:31,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:31,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:31,657 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-16 12:36:31,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:31,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071709492] [2022-11-16 12:36:31,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071709492] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:36:31,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:36:31,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:36:31,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172672872] [2022-11-16 12:36:31,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:36:31,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:36:31,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:31,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:36:31,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:36:31,660 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 203 [2022-11-16 12:36:31,661 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 446 transitions, 3169 flow. Second operand has 4 states, 4 states have (on average 155.5) internal successors, (622), 4 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:31,661 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:36:31,661 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 203 [2022-11-16 12:36:31,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:36:36,865 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([786] t_funEXIT-->L711-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem14#1_11| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of3ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} AuxVars[] AssignedVars[][207], [1005#(<= 1 |t_funThread2of3ForFork0_#t~post7|), 419#true, 455#(and (<= |t_funThread2of3ForFork0_#t~post7| 1) (<= ~global~0 1)), Black: 404#(<= ~global~0 1), Black: 411#(and (<= |t_funThread1of3ForFork0_#t~post7| 1) (<= ~global~0 1)), Black: 405#(<= |t_funThread1of3ForFork0_#t~post7| 1), Black: 403#(= |t_funThread1of3ForFork0_#t~post5| 0), Black: 409#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1)), 1014#true, Black: 430#(and (<= 1 ~global~0) (<= 1 |t_funThread1of3ForFork0_#t~post7|)), Black: 423#(<= 1 ~global~0), 400#true, t_funThread1of3ForFork0NotInUse, t_funThread2of3ForFork0InUse, t_funThread3of3ForFork0NotInUse, Black: 437#(= |t_funThread2of3ForFork0_#t~post5| 0), 898#(and (<= |~#mutex1~0.base| 4) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 436#(= ~global~0 0), Black: 439#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post5| 0)), Black: 189#(= |ULTIMATE.start_main_~i~0#1| 0), Black: 190#(= |ULTIMATE.start_main_#t~post8#1| 0), Black: 192#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), Black: 449#(<= |t_funThread2of3ForFork0_#t~post7| 1), Black: 447#(= |t_funThread2of3ForFork0_#t~post5| 0), 105#L702-16true, Black: 200#(= |t_funThread1of3ForFork0_#t~post5| 0), Black: 199#(= ~global~0 0), Black: 448#(<= ~global~0 1), Black: 453#(and (<= ~global~0 1) (= |t_funThread2of3ForFork0_#t~post5| 0)), Black: 202#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (= ~global~0 0)), Black: 951#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483647) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 941#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 908#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (<= ~global~0 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 939#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 906#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 916#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (< ~global~0 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 935#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (<= |t_funThread1of3ForFork0_#t~post5| 0) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 963#(and (<= |~#mutex1~0.base| 4) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 947#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 912#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 914#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (< ~global~0 2147483646) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 943#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 969#(and (<= |~#mutex1~0.base| 4) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483647) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 957#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (< ~global~0 2147483647) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 953#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483647) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 933#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 967#(and (<= |~#mutex1~0.base| 4) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 959#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), 5#L711-5true, Black: 1011#(and (<= 1 ~global~0) (<= 1 |t_funThread2of3ForFork0_#t~post7|)), 207#true]) [2022-11-16 12:36:36,865 INFO L383 tUnfolder$Statistics]: this new event has 170 ancestors and is cut-off event [2022-11-16 12:36:36,866 INFO L386 tUnfolder$Statistics]: existing Event has 123 ancestors and is cut-off event [2022-11-16 12:36:36,866 INFO L386 tUnfolder$Statistics]: existing Event has 123 ancestors and is cut-off event [2022-11-16 12:36:36,866 INFO L386 tUnfolder$Statistics]: existing Event has 123 ancestors and is cut-off event [2022-11-16 12:36:37,058 INFO L130 PetriNetUnfolder]: 3049/24475 cut-off events. [2022-11-16 12:36:37,058 INFO L131 PetriNetUnfolder]: For 52431/53811 co-relation queries the response was YES. [2022-11-16 12:36:37,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47854 conditions, 24475 events. 3049/24475 cut-off events. For 52431/53811 co-relation queries the response was YES. Maximal size of possible extension queue 834. Compared 356204 event pairs, 1442 based on Foata normal form. 411/21870 useless extension candidates. Maximal degree in co-relation 46893. Up to 4593 conditions per place. [2022-11-16 12:36:37,828 INFO L137 encePairwiseOnDemand]: 195/203 looper letters, 201 selfloop transitions, 15 changer transitions 0/492 dead transitions. [2022-11-16 12:36:37,828 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 492 transitions, 4069 flow [2022-11-16 12:36:37,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:36:37,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:36:37,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 830 transitions. [2022-11-16 12:36:37,859 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8177339901477833 [2022-11-16 12:36:37,859 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 830 transitions. [2022-11-16 12:36:37,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 830 transitions. [2022-11-16 12:36:37,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:36:37,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 830 transitions. [2022-11-16 12:36:37,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:37,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:37,864 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:37,864 INFO L175 Difference]: Start difference. First operand has 291 places, 446 transitions, 3169 flow. Second operand 5 states and 830 transitions. [2022-11-16 12:36:37,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 492 transitions, 4069 flow [2022-11-16 12:36:38,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 492 transitions, 3981 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-11-16 12:36:38,155 INFO L231 Difference]: Finished difference. Result has 294 places, 450 transitions, 3185 flow [2022-11-16 12:36:38,155 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=3094, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3185, PETRI_PLACES=294, PETRI_TRANSITIONS=450} [2022-11-16 12:36:38,156 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 110 predicate places. [2022-11-16 12:36:38,156 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 450 transitions, 3185 flow [2022-11-16 12:36:38,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 155.5) internal successors, (622), 4 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:38,156 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:36:38,157 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:36:38,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-16 12:36:38,157 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 12:36:38,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:38,158 INFO L85 PathProgramCache]: Analyzing trace with hash -325865581, now seen corresponding path program 1 times [2022-11-16 12:36:38,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:38,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309082764] [2022-11-16 12:36:38,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:38,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:38,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:36:38,183 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:36:38,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:36:38,205 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:36:38,207 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:36:38,207 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-11-16 12:36:38,207 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-11-16 12:36:38,208 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-11-16 12:36:38,208 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-11-16 12:36:38,208 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-11-16 12:36:38,208 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-11-16 12:36:38,208 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-11-16 12:36:38,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-11-16 12:36:38,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-11-16 12:36:38,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-11-16 12:36:38,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-11-16 12:36:38,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-11-16 12:36:38,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-11-16 12:36:38,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-11-16 12:36:38,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-11-16 12:36:38,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-11-16 12:36:38,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-11-16 12:36:38,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-11-16 12:36:38,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-11-16 12:36:38,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-11-16 12:36:38,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-11-16 12:36:38,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-16 12:36:38,211 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:36:38,215 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 12:36:38,215 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-16 12:36:38,245 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-16 12:36:38,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 241 transitions, 526 flow [2022-11-16 12:36:38,345 INFO L130 PetriNetUnfolder]: 81/658 cut-off events. [2022-11-16 12:36:38,346 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-11-16 12:36:38,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 713 conditions, 658 events. 81/658 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2533 event pairs, 6 based on Foata normal form. 0/523 useless extension candidates. Maximal degree in co-relation 443. Up to 32 conditions per place. [2022-11-16 12:36:38,354 INFO L82 GeneralOperation]: Start removeDead. Operand has 217 places, 241 transitions, 526 flow [2022-11-16 12:36:38,360 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 217 places, 241 transitions, 526 flow [2022-11-16 12:36:38,361 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:36:38,362 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;@3c19df30, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:36:38,362 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-16 12:36:38,366 INFO L130 PetriNetUnfolder]: 2/66 cut-off events. [2022-11-16 12:36:38,366 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:36:38,366 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:36:38,367 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] [2022-11-16 12:36:38,367 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-16 12:36:38,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:38,367 INFO L85 PathProgramCache]: Analyzing trace with hash -171553766, now seen corresponding path program 1 times [2022-11-16 12:36:38,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:38,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137082312] [2022-11-16 12:36:38,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:38,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:38,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:38,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:36:38,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:38,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137082312] [2022-11-16 12:36:38,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137082312] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:36:38,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:36:38,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:36:38,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757594490] [2022-11-16 12:36:38,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:36:38,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:36:38,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:38,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:36:38,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:36:38,414 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 241 [2022-11-16 12:36:38,415 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 241 transitions, 526 flow. Second operand has 4 states, 4 states have (on average 192.75) internal successors, (771), 4 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:38,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:36:38,416 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 241 [2022-11-16 12:36:38,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:36:38,558 INFO L130 PetriNetUnfolder]: 20/575 cut-off events. [2022-11-16 12:36:38,558 INFO L131 PetriNetUnfolder]: For 187/403 co-relation queries the response was YES. [2022-11-16 12:36:38,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 709 conditions, 575 events. 20/575 cut-off events. For 187/403 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 2331 event pairs, 6 based on Foata normal form. 629/1128 useless extension candidates. Maximal degree in co-relation 429. Up to 71 conditions per place. [2022-11-16 12:36:38,565 INFO L137 encePairwiseOnDemand]: 205/241 looper letters, 23 selfloop transitions, 4 changer transitions 0/218 dead transitions. [2022-11-16 12:36:38,565 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 218 transitions, 534 flow [2022-11-16 12:36:38,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:36:38,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:36:38,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1033 transitions. [2022-11-16 12:36:38,567 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8572614107883817 [2022-11-16 12:36:38,567 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1033 transitions. [2022-11-16 12:36:38,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1033 transitions. [2022-11-16 12:36:38,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:36:38,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1033 transitions. [2022-11-16 12:36:38,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 206.6) internal successors, (1033), 5 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:38,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:38,572 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:38,573 INFO L175 Difference]: Start difference. First operand has 217 places, 241 transitions, 526 flow. Second operand 5 states and 1033 transitions. [2022-11-16 12:36:38,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 218 transitions, 534 flow [2022-11-16 12:36:38,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 218 transitions, 534 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:36:38,577 INFO L231 Difference]: Finished difference. Result has 223 places, 214 transitions, 498 flow [2022-11-16 12:36:38,578 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=498, PETRI_PLACES=223, PETRI_TRANSITIONS=214} [2022-11-16 12:36:38,578 INFO L288 CegarLoopForPetriNet]: 217 programPoint places, 6 predicate places. [2022-11-16 12:36:38,579 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 214 transitions, 498 flow [2022-11-16 12:36:38,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 192.75) internal successors, (771), 4 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:38,579 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:36:38,579 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] [2022-11-16 12:36:38,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-16 12:36:38,580 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-16 12:36:38,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:38,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1209093758, now seen corresponding path program 1 times [2022-11-16 12:36:38,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:38,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29985118] [2022-11-16 12:36:38,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:38,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:38,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:38,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:36:38,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:38,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29985118] [2022-11-16 12:36:38,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29985118] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:36:38,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:36:38,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:36:38,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915432989] [2022-11-16 12:36:38,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:36:38,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:36:38,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:38,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:36:38,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:36:38,631 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 241 [2022-11-16 12:36:38,632 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 214 transitions, 498 flow. Second operand has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:38,632 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:36:38,632 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 241 [2022-11-16 12:36:38,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:36:48,250 INFO L130 PetriNetUnfolder]: 15402/57263 cut-off events. [2022-11-16 12:36:48,250 INFO L131 PetriNetUnfolder]: For 9960/9960 co-relation queries the response was YES. [2022-11-16 12:36:48,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82820 conditions, 57263 events. 15402/57263 cut-off events. For 9960/9960 co-relation queries the response was YES. Maximal size of possible extension queue 1658. Compared 817526 event pairs, 8862 based on Foata normal form. 0/49665 useless extension candidates. Maximal degree in co-relation 82751. Up to 15267 conditions per place. [2022-11-16 12:36:49,283 INFO L137 encePairwiseOnDemand]: 232/241 looper letters, 68 selfloop transitions, 10 changer transitions 0/261 dead transitions. [2022-11-16 12:36:49,283 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 261 transitions, 820 flow [2022-11-16 12:36:49,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:36:49,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:36:49,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 982 transitions. [2022-11-16 12:36:49,285 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8149377593360996 [2022-11-16 12:36:49,285 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 982 transitions. [2022-11-16 12:36:49,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 982 transitions. [2022-11-16 12:36:49,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:36:49,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 982 transitions. [2022-11-16 12:36:49,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 196.4) internal successors, (982), 5 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:49,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:49,291 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:49,291 INFO L175 Difference]: Start difference. First operand has 223 places, 214 transitions, 498 flow. Second operand 5 states and 982 transitions. [2022-11-16 12:36:49,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 261 transitions, 820 flow [2022-11-16 12:36:49,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 261 transitions, 818 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:36:49,302 INFO L231 Difference]: Finished difference. Result has 229 places, 223 transitions, 575 flow [2022-11-16 12:36:49,302 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=575, PETRI_PLACES=229, PETRI_TRANSITIONS=223} [2022-11-16 12:36:49,303 INFO L288 CegarLoopForPetriNet]: 217 programPoint places, 12 predicate places. [2022-11-16 12:36:49,303 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 223 transitions, 575 flow [2022-11-16 12:36:49,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:49,304 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:36:49,304 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] [2022-11-16 12:36:49,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-16 12:36:49,304 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-16 12:36:49,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:49,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1266606715, now seen corresponding path program 1 times [2022-11-16 12:36:49,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:49,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070211143] [2022-11-16 12:36:49,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:49,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:49,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:49,344 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:36:49,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:49,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070211143] [2022-11-16 12:36:49,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070211143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:36:49,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:36:49,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:36:49,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217271580] [2022-11-16 12:36:49,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:36:49,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:36:49,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:49,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:36:49,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:36:49,347 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 241 [2022-11-16 12:36:49,348 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 223 transitions, 575 flow. Second operand has 4 states, 4 states have (on average 194.75) internal successors, (779), 4 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:49,348 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:36:49,348 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 241 [2022-11-16 12:36:49,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:36:49,900 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1064] t_funEXIT-->L711-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem14#1_18| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of4ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][128], [30#t_funENTRYtrue, Black: 225#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), Black: 222#(= |ULTIMATE.start_main_~i~0#1| 0), 240#true, Black: 223#(= |ULTIMATE.start_main_#t~post8#1| 0), Black: 235#(and (= |t_funThread1of4ForFork0_#t~post5| 0) (= ~global~0 0)), Black: 233#(= |t_funThread1of4ForFork0_#t~post5| 0), Black: 232#(= ~global~0 0), 106#L711-5true, t_funThread1of4ForFork0NotInUse, t_funThread2of4ForFork0InUse, t_funThread3of4ForFork0NotInUse, t_funThread4of4ForFork0NotInUse, 230#true]) [2022-11-16 12:36:49,900 INFO L383 tUnfolder$Statistics]: this new event has 198 ancestors and is cut-off event [2022-11-16 12:36:49,901 INFO L386 tUnfolder$Statistics]: existing Event has 151 ancestors and is cut-off event [2022-11-16 12:36:49,901 INFO L386 tUnfolder$Statistics]: existing Event has 104 ancestors and is cut-off event [2022-11-16 12:36:49,901 INFO L386 tUnfolder$Statistics]: existing Event has 151 ancestors and is cut-off event [2022-11-16 12:36:49,948 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1064] t_funEXIT-->L711-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem14#1_18| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of4ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][128], [Black: 225#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), Black: 222#(= |ULTIMATE.start_main_~i~0#1| 0), 240#true, Black: 223#(= |ULTIMATE.start_main_#t~post8#1| 0), 29#L702-6true, Black: 235#(and (= |t_funThread1of4ForFork0_#t~post5| 0) (= ~global~0 0)), Black: 233#(= |t_funThread1of4ForFork0_#t~post5| 0), Black: 232#(= ~global~0 0), 106#L711-5true, t_funThread1of4ForFork0NotInUse, t_funThread2of4ForFork0InUse, t_funThread3of4ForFork0NotInUse, t_funThread4of4ForFork0NotInUse, 230#true]) [2022-11-16 12:36:49,948 INFO L383 tUnfolder$Statistics]: this new event has 208 ancestors and is cut-off event [2022-11-16 12:36:49,948 INFO L386 tUnfolder$Statistics]: existing Event has 161 ancestors and is cut-off event [2022-11-16 12:36:49,948 INFO L386 tUnfolder$Statistics]: existing Event has 208 ancestors and is cut-off event [2022-11-16 12:36:49,949 INFO L386 tUnfolder$Statistics]: existing Event has 114 ancestors and is cut-off event [2022-11-16 12:36:49,972 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1064] t_funEXIT-->L711-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem14#1_18| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of4ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][128], [Black: 225#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), Black: 222#(= |ULTIMATE.start_main_~i~0#1| 0), 240#true, Black: 223#(= |ULTIMATE.start_main_#t~post8#1| 0), Black: 235#(and (= |t_funThread1of4ForFork0_#t~post5| 0) (= ~global~0 0)), Black: 233#(= |t_funThread1of4ForFork0_#t~post5| 0), Black: 232#(= ~global~0 0), 106#L711-5true, t_funThread1of4ForFork0NotInUse, t_funThread2of4ForFork0NotInUse, t_funThread3of4ForFork0NotInUse, t_funThread4of4ForFork0NotInUse, 230#true]) [2022-11-16 12:36:49,973 INFO L383 tUnfolder$Statistics]: this new event has 233 ancestors and is cut-off event [2022-11-16 12:36:49,973 INFO L386 tUnfolder$Statistics]: existing Event has 139 ancestors and is cut-off event [2022-11-16 12:36:49,973 INFO L386 tUnfolder$Statistics]: existing Event has 139 ancestors and is cut-off event [2022-11-16 12:36:49,973 INFO L386 tUnfolder$Statistics]: existing Event has 92 ancestors and is cut-off event [2022-11-16 12:36:49,977 INFO L130 PetriNetUnfolder]: 164/2690 cut-off events. [2022-11-16 12:36:49,977 INFO L131 PetriNetUnfolder]: For 1166/2810 co-relation queries the response was YES. [2022-11-16 12:36:50,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3381 conditions, 2690 events. 164/2690 cut-off events. For 1166/2810 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 23036 event pairs, 64 based on Foata normal form. 108/2389 useless extension candidates. Maximal degree in co-relation 2644. Up to 205 conditions per place. [2022-11-16 12:36:50,041 INFO L137 encePairwiseOnDemand]: 235/241 looper letters, 15 selfloop transitions, 8 changer transitions 0/223 dead transitions. [2022-11-16 12:36:50,042 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 223 transitions, 619 flow [2022-11-16 12:36:50,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:36:50,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:36:50,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 976 transitions. [2022-11-16 12:36:50,044 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8099585062240664 [2022-11-16 12:36:50,044 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 976 transitions. [2022-11-16 12:36:50,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 976 transitions. [2022-11-16 12:36:50,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:36:50,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 976 transitions. [2022-11-16 12:36:50,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 195.2) internal successors, (976), 5 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:50,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:50,049 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:50,049 INFO L175 Difference]: Start difference. First operand has 229 places, 223 transitions, 575 flow. Second operand 5 states and 976 transitions. [2022-11-16 12:36:50,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 223 transitions, 619 flow [2022-11-16 12:36:50,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 223 transitions, 614 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:36:50,055 INFO L231 Difference]: Finished difference. Result has 232 places, 223 transitions, 590 flow [2022-11-16 12:36:50,055 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=590, PETRI_PLACES=232, PETRI_TRANSITIONS=223} [2022-11-16 12:36:50,056 INFO L288 CegarLoopForPetriNet]: 217 programPoint places, 15 predicate places. [2022-11-16 12:36:50,056 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 223 transitions, 590 flow [2022-11-16 12:36:50,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 194.75) internal successors, (779), 4 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:50,056 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:36:50,057 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] [2022-11-16 12:36:50,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-16 12:36:50,057 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-16 12:36:50,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:50,057 INFO L85 PathProgramCache]: Analyzing trace with hash -610101615, now seen corresponding path program 1 times [2022-11-16 12:36:50,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:50,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029652755] [2022-11-16 12:36:50,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:50,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:50,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:50,149 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:36:50,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:50,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029652755] [2022-11-16 12:36:50,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029652755] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:36:50,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884853284] [2022-11-16 12:36:50,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:50,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:50,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51a847b-0478-4887-9976-2fd01a027f82/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:36:50,152 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51a847b-0478-4887-9976-2fd01a027f82/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:36:50,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51a847b-0478-4887-9976-2fd01a027f82/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:36:50,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:50,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:36:50,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:36:50,305 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:36:50,305 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:36:50,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884853284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:36:50,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:36:50,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-16 12:36:50,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313854261] [2022-11-16 12:36:50,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:36:50,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:36:50,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:50,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:36:50,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:36:50,308 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 241 [2022-11-16 12:36:50,309 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 223 transitions, 590 flow. Second operand has 5 states, 5 states have (on average 194.2) internal successors, (971), 5 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:50,309 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:36:50,309 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 241 [2022-11-16 12:36:50,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:36:50,792 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1064] t_funEXIT-->L711-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem14#1_18| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of4ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][127], [30#t_funENTRYtrue, 397#(<= 0 (+ |ULTIMATE.start_main_~i~0#1| 2147483648)), Black: 225#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), 240#true, Black: 222#(= |ULTIMATE.start_main_~i~0#1| 0), Black: 223#(= |ULTIMATE.start_main_#t~post8#1| 0), Black: 235#(and (= |t_funThread1of4ForFork0_#t~post5| 0) (= ~global~0 0)), Black: 233#(= |t_funThread1of4ForFork0_#t~post5| 0), Black: 232#(= ~global~0 0), 106#L711-5true, t_funThread1of4ForFork0NotInUse, t_funThread2of4ForFork0InUse, t_funThread3of4ForFork0NotInUse, t_funThread4of4ForFork0NotInUse]) [2022-11-16 12:36:50,792 INFO L383 tUnfolder$Statistics]: this new event has 198 ancestors and is cut-off event [2022-11-16 12:36:50,792 INFO L386 tUnfolder$Statistics]: existing Event has 151 ancestors and is cut-off event [2022-11-16 12:36:50,793 INFO L386 tUnfolder$Statistics]: existing Event has 104 ancestors and is cut-off event [2022-11-16 12:36:50,793 INFO L386 tUnfolder$Statistics]: existing Event has 151 ancestors and is cut-off event [2022-11-16 12:36:50,824 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1064] t_funEXIT-->L711-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem14#1_18| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of4ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][127], [397#(<= 0 (+ |ULTIMATE.start_main_~i~0#1| 2147483648)), Black: 225#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), 240#true, Black: 222#(= |ULTIMATE.start_main_~i~0#1| 0), Black: 223#(= |ULTIMATE.start_main_#t~post8#1| 0), 29#L702-6true, Black: 235#(and (= |t_funThread1of4ForFork0_#t~post5| 0) (= ~global~0 0)), Black: 233#(= |t_funThread1of4ForFork0_#t~post5| 0), Black: 232#(= ~global~0 0), 106#L711-5true, t_funThread1of4ForFork0NotInUse, t_funThread2of4ForFork0InUse, t_funThread3of4ForFork0NotInUse, t_funThread4of4ForFork0NotInUse]) [2022-11-16 12:36:50,825 INFO L383 tUnfolder$Statistics]: this new event has 208 ancestors and is cut-off event [2022-11-16 12:36:50,825 INFO L386 tUnfolder$Statistics]: existing Event has 161 ancestors and is cut-off event [2022-11-16 12:36:50,825 INFO L386 tUnfolder$Statistics]: existing Event has 208 ancestors and is cut-off event [2022-11-16 12:36:50,825 INFO L386 tUnfolder$Statistics]: existing Event has 114 ancestors and is cut-off event [2022-11-16 12:36:50,841 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1064] t_funEXIT-->L711-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem14#1_18| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of4ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][127], [397#(<= 0 (+ |ULTIMATE.start_main_~i~0#1| 2147483648)), Black: 225#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), 240#true, Black: 222#(= |ULTIMATE.start_main_~i~0#1| 0), Black: 223#(= |ULTIMATE.start_main_#t~post8#1| 0), Black: 235#(and (= |t_funThread1of4ForFork0_#t~post5| 0) (= ~global~0 0)), Black: 233#(= |t_funThread1of4ForFork0_#t~post5| 0), Black: 232#(= ~global~0 0), 106#L711-5true, t_funThread1of4ForFork0NotInUse, t_funThread2of4ForFork0NotInUse, t_funThread3of4ForFork0NotInUse, t_funThread4of4ForFork0NotInUse]) [2022-11-16 12:36:50,841 INFO L383 tUnfolder$Statistics]: this new event has 233 ancestors and is cut-off event [2022-11-16 12:36:50,842 INFO L386 tUnfolder$Statistics]: existing Event has 139 ancestors and is cut-off event [2022-11-16 12:36:50,842 INFO L386 tUnfolder$Statistics]: existing Event has 139 ancestors and is cut-off event [2022-11-16 12:36:50,842 INFO L386 tUnfolder$Statistics]: existing Event has 92 ancestors and is cut-off event [2022-11-16 12:36:50,846 INFO L130 PetriNetUnfolder]: 164/2687 cut-off events. [2022-11-16 12:36:50,846 INFO L131 PetriNetUnfolder]: For 1134/2626 co-relation queries the response was YES. [2022-11-16 12:36:50,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3391 conditions, 2687 events. 164/2687 cut-off events. For 1134/2626 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 22965 event pairs, 64 based on Foata normal form. 38/2316 useless extension candidates. Maximal degree in co-relation 2643. Up to 218 conditions per place. [2022-11-16 12:36:50,889 INFO L137 encePairwiseOnDemand]: 237/241 looper letters, 17 selfloop transitions, 5 changer transitions 0/222 dead transitions. [2022-11-16 12:36:50,889 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 222 transitions, 630 flow [2022-11-16 12:36:50,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:36:50,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:36:50,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 783 transitions. [2022-11-16 12:36:50,891 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8122406639004149 [2022-11-16 12:36:50,891 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 783 transitions. [2022-11-16 12:36:50,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 783 transitions. [2022-11-16 12:36:50,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:36:50,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 783 transitions. [2022-11-16 12:36:50,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 195.75) internal successors, (783), 4 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:50,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 241.0) internal successors, (1205), 5 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:50,895 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 241.0) internal successors, (1205), 5 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:50,895 INFO L175 Difference]: Start difference. First operand has 232 places, 223 transitions, 590 flow. Second operand 4 states and 783 transitions. [2022-11-16 12:36:50,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 222 transitions, 630 flow [2022-11-16 12:36:50,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 222 transitions, 618 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:36:50,901 INFO L231 Difference]: Finished difference. Result has 231 places, 222 transitions, 584 flow [2022-11-16 12:36:50,901 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=584, PETRI_PLACES=231, PETRI_TRANSITIONS=222} [2022-11-16 12:36:50,902 INFO L288 CegarLoopForPetriNet]: 217 programPoint places, 14 predicate places. [2022-11-16 12:36:50,902 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 222 transitions, 584 flow [2022-11-16 12:36:50,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 194.2) internal successors, (971), 5 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:50,903 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:36:50,903 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] [2022-11-16 12:36:50,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51a847b-0478-4887-9976-2fd01a027f82/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:36:51,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51a847b-0478-4887-9976-2fd01a027f82/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-16 12:36:51,108 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-16 12:36:51,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:51,109 INFO L85 PathProgramCache]: Analyzing trace with hash -2074373663, now seen corresponding path program 1 times [2022-11-16 12:36:51,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:51,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094852229] [2022-11-16 12:36:51,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:51,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:51,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:51,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:36:51,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:51,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094852229] [2022-11-16 12:36:51,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094852229] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:36:51,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:36:51,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:36:51,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175957121] [2022-11-16 12:36:51,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:36:51,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:36:51,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:51,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:36:51,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:36:51,183 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 241 [2022-11-16 12:36:51,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 222 transitions, 584 flow. Second operand has 6 states, 6 states have (on average 176.5) internal successors, (1059), 6 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:51,185 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:36:51,185 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 241 [2022-11-16 12:36:51,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand