./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-min-max-inc.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d60d8343-9563-41a6-b6b2-48955278224c/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d60d8343-9563-41a6-b6b2-48955278224c/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_d60d8343-9563-41a6-b6b2-48955278224c/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d60d8343-9563-41a6-b6b2-48955278224c/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-min-max-inc.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d60d8343-9563-41a6-b6b2-48955278224c/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_d60d8343-9563-41a6-b6b2-48955278224c/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 24c46cfa0dbb54d68ea1c1d9e6e82d14a582b1d00782b6decedd8126f489ee67 --- 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 11:08:12,737 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:08:12,739 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:08:12,768 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:08:12,769 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:08:12,773 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:08:12,776 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:08:12,778 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:08:12,779 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:08:12,780 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:08:12,781 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:08:12,787 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:08:12,788 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:08:12,789 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:08:12,790 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:08:12,791 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:08:12,792 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:08:12,793 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:08:12,795 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:08:12,797 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:08:12,801 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:08:12,810 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:08:12,812 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:08:12,813 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:08:12,817 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:08:12,817 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:08:12,817 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:08:12,818 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:08:12,819 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:08:12,820 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:08:12,820 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:08:12,821 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:08:12,822 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:08:12,823 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:08:12,824 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:08:12,824 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:08:12,825 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:08:12,825 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:08:12,825 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:08:12,826 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:08:12,827 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:08:12,830 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d60d8343-9563-41a6-b6b2-48955278224c/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:08:12,866 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:08:12,867 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:08:12,867 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:08:12,867 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:08:12,868 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:08:12,868 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:08:12,869 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:08:12,869 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:08:12,869 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:08:12,869 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:08:12,870 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:08:12,870 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:08:12,870 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:08:12,870 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:08:12,870 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:08:12,871 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:08:12,871 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:08:12,871 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:08:12,871 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:08:12,871 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:08:12,871 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:08:12,872 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:08:12,872 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:08:12,872 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:08:12,872 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:08:12,873 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:08:12,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:08:12,873 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:08:12,873 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:08:12,873 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:08:12,874 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:08:12,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:08:12,874 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:08:12,874 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:08:12,874 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:08:12,880 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_d60d8343-9563-41a6-b6b2-48955278224c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d60d8343-9563-41a6-b6b2-48955278224c/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 24c46cfa0dbb54d68ea1c1d9e6e82d14a582b1d00782b6decedd8126f489ee67 [2022-11-16 11:08:13,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:08:13,154 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:08:13,158 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:08:13,159 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:08:13,160 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:08:13,161 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d60d8343-9563-41a6-b6b2-48955278224c/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/popl20-min-max-inc.wvr.c [2022-11-16 11:08:13,224 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d60d8343-9563-41a6-b6b2-48955278224c/bin/uautomizer-tPACEb0tL8/data/f7e1776cc/499907671ac34f6fbcc15643b411974c/FLAGc30249317 [2022-11-16 11:08:13,692 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:08:13,695 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d60d8343-9563-41a6-b6b2-48955278224c/sv-benchmarks/c/weaver/popl20-min-max-inc.wvr.c [2022-11-16 11:08:13,704 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d60d8343-9563-41a6-b6b2-48955278224c/bin/uautomizer-tPACEb0tL8/data/f7e1776cc/499907671ac34f6fbcc15643b411974c/FLAGc30249317 [2022-11-16 11:08:14,065 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d60d8343-9563-41a6-b6b2-48955278224c/bin/uautomizer-tPACEb0tL8/data/f7e1776cc/499907671ac34f6fbcc15643b411974c [2022-11-16 11:08:14,068 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:08:14,070 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:08:14,072 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:08:14,072 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:08:14,077 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:08:14,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:08:14" (1/1) ... [2022-11-16 11:08:14,079 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29c1bc20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:08:14, skipping insertion in model container [2022-11-16 11:08:14,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:08:14" (1/1) ... [2022-11-16 11:08:14,089 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:08:14,117 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:08:14,372 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_d60d8343-9563-41a6-b6b2-48955278224c/sv-benchmarks/c/weaver/popl20-min-max-inc.wvr.c[3018,3031] [2022-11-16 11:08:14,383 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:08:14,398 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:08:14,446 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_d60d8343-9563-41a6-b6b2-48955278224c/sv-benchmarks/c/weaver/popl20-min-max-inc.wvr.c[3018,3031] [2022-11-16 11:08:14,458 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:08:14,485 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:08:14,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:08:14 WrapperNode [2022-11-16 11:08:14,486 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:08:14,488 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:08:14,488 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:08:14,488 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:08:14,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:08:14" (1/1) ... [2022-11-16 11:08:14,525 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:08:14" (1/1) ... [2022-11-16 11:08:14,569 INFO L138 Inliner]: procedures = 26, calls = 63, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 143 [2022-11-16 11:08:14,570 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:08:14,570 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:08:14,571 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:08:14,572 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:08:14,580 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:08:14" (1/1) ... [2022-11-16 11:08:14,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:08:14" (1/1) ... [2022-11-16 11:08:14,582 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:08:14" (1/1) ... [2022-11-16 11:08:14,583 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:08:14" (1/1) ... [2022-11-16 11:08:14,590 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:08:14" (1/1) ... [2022-11-16 11:08:14,594 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:08:14" (1/1) ... [2022-11-16 11:08:14,596 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:08:14" (1/1) ... [2022-11-16 11:08:14,598 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:08:14" (1/1) ... [2022-11-16 11:08:14,600 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:08:14,601 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:08:14,601 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:08:14,601 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:08:14,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:08:14" (1/1) ... [2022-11-16 11:08:14,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:08:14,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d60d8343-9563-41a6-b6b2-48955278224c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:08:14,645 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d60d8343-9563-41a6-b6b2-48955278224c/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:08:14,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d60d8343-9563-41a6-b6b2-48955278224c/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:08:14,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:08:14,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:08:14,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:08:14,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:08:14,692 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 11:08:14,692 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 11:08:14,692 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 11:08:14,693 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 11:08:14,693 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 11:08:14,693 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 11:08:14,693 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-16 11:08:14,693 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-16 11:08:14,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:08:14,693 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 11:08:14,693 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 11:08:14,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 11:08:14,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:08:14,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:08:14,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:08:14,695 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 11:08:14,802 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:08:14,805 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:08:15,260 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:08:15,447 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:08:15,448 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-16 11:08:15,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:08:15 BoogieIcfgContainer [2022-11-16 11:08:15,451 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:08:15,454 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:08:15,454 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:08:15,463 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:08:15,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:08:14" (1/3) ... [2022-11-16 11:08:15,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fffd849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:08:15, skipping insertion in model container [2022-11-16 11:08:15,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:08:14" (2/3) ... [2022-11-16 11:08:15,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fffd849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:08:15, skipping insertion in model container [2022-11-16 11:08:15,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:08:15" (3/3) ... [2022-11-16 11:08:15,466 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-inc.wvr.c [2022-11-16 11:08:15,478 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:08:15,489 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:08:15,489 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-16 11:08:15,490 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:08:15,648 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-16 11:08:15,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 191 transitions, 414 flow [2022-11-16 11:08:15,872 INFO L130 PetriNetUnfolder]: 12/187 cut-off events. [2022-11-16 11:08:15,872 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-16 11:08:15,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 187 events. 12/187 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 204 event pairs, 0 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 152. Up to 2 conditions per place. [2022-11-16 11:08:15,880 INFO L82 GeneralOperation]: Start removeDead. Operand has 192 places, 191 transitions, 414 flow [2022-11-16 11:08:15,885 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 164 transitions, 349 flow [2022-11-16 11:08:15,895 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:08:15,902 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;@44652654, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:08:15,902 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-11-16 11:08:15,918 INFO L130 PetriNetUnfolder]: 4/70 cut-off events. [2022-11-16 11:08:15,918 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:08:15,919 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:08:15,919 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 11:08:15,920 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 11:08:15,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:15,925 INFO L85 PathProgramCache]: Analyzing trace with hash 2065256142, now seen corresponding path program 1 times [2022-11-16 11:08:15,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:15,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10850341] [2022-11-16 11:08:15,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:15,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:16,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:16,308 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 11:08:16,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:16,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10850341] [2022-11-16 11:08:16,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10850341] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:16,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:16,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:08:16,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020332371] [2022-11-16 11:08:16,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:16,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:08:16,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:16,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:08:16,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:08:16,353 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 191 [2022-11-16 11:08:16,356 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 164 transitions, 349 flow. Second operand has 4 states, 4 states have (on average 153.5) internal successors, (614), 4 states have internal predecessors, (614), 0 states have call successors, (0), 0 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 11:08:16,357 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:08:16,357 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 191 [2022-11-16 11:08:16,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:08:17,061 INFO L130 PetriNetUnfolder]: 753/2208 cut-off events. [2022-11-16 11:08:17,062 INFO L131 PetriNetUnfolder]: For 332/332 co-relation queries the response was YES. [2022-11-16 11:08:17,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3502 conditions, 2208 events. 753/2208 cut-off events. For 332/332 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 16709 event pairs, 544 based on Foata normal form. 268/1821 useless extension candidates. Maximal degree in co-relation 1545. Up to 525 conditions per place. [2022-11-16 11:08:17,097 INFO L137 encePairwiseOnDemand]: 176/191 looper letters, 46 selfloop transitions, 4 changer transitions 3/178 dead transitions. [2022-11-16 11:08:17,098 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 178 transitions, 498 flow [2022-11-16 11:08:17,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:08:17,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:08:17,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 827 transitions. [2022-11-16 11:08:17,115 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8659685863874346 [2022-11-16 11:08:17,116 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 827 transitions. [2022-11-16 11:08:17,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 827 transitions. [2022-11-16 11:08:17,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:08:17,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 827 transitions. [2022-11-16 11:08:17,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 165.4) internal successors, (827), 5 states have internal predecessors, (827), 0 states have call successors, (0), 0 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 11:08:17,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 0 states have call successors, (0), 0 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 11:08:17,136 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 0 states have call successors, (0), 0 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 11:08:17,138 INFO L175 Difference]: Start difference. First operand has 166 places, 164 transitions, 349 flow. Second operand 5 states and 827 transitions. [2022-11-16 11:08:17,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 178 transitions, 498 flow [2022-11-16 11:08:17,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 178 transitions, 472 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-16 11:08:17,148 INFO L231 Difference]: Finished difference. Result has 164 places, 155 transitions, 342 flow [2022-11-16 11:08:17,150 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=342, PETRI_PLACES=164, PETRI_TRANSITIONS=155} [2022-11-16 11:08:17,154 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, -2 predicate places. [2022-11-16 11:08:17,155 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 155 transitions, 342 flow [2022-11-16 11:08:17,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 153.5) internal successors, (614), 4 states have internal predecessors, (614), 0 states have call successors, (0), 0 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 11:08:17,155 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:08:17,157 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:17,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:08:17,157 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 11:08:17,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:17,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1941458503, now seen corresponding path program 1 times [2022-11-16 11:08:17,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:17,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793815371] [2022-11-16 11:08:17,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:17,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:17,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:17,410 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:08:17,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:17,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793815371] [2022-11-16 11:08:17,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793815371] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:08:17,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076443679] [2022-11-16 11:08:17,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:17,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:08:17,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d60d8343-9563-41a6-b6b2-48955278224c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:08:17,416 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d60d8343-9563-41a6-b6b2-48955278224c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:08:17,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d60d8343-9563-41a6-b6b2-48955278224c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:08:17,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:17,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:08:17,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:08:17,774 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:08:17,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:08:17,841 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:08:17,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076443679] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:08:17,842 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:08:17,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 11:08:17,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836869555] [2022-11-16 11:08:17,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:08:17,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:08:17,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:17,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:08:17,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:08:17,852 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 191 [2022-11-16 11:08:17,855 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 155 transitions, 342 flow. Second operand has 12 states, 12 states have (on average 154.66666666666666) internal successors, (1856), 12 states have internal predecessors, (1856), 0 states have call successors, (0), 0 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 11:08:17,855 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:08:17,855 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 191 [2022-11-16 11:08:17,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:08:19,380 INFO L130 PetriNetUnfolder]: 1881/5432 cut-off events. [2022-11-16 11:08:19,380 INFO L131 PetriNetUnfolder]: For 221/221 co-relation queries the response was YES. [2022-11-16 11:08:19,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8402 conditions, 5432 events. 1881/5432 cut-off events. For 221/221 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 47054 event pairs, 1360 based on Foata normal form. 3/3819 useless extension candidates. Maximal degree in co-relation 6672. Up to 520 conditions per place. [2022-11-16 11:08:19,487 INFO L137 encePairwiseOnDemand]: 184/191 looper letters, 103 selfloop transitions, 18 changer transitions 0/246 dead transitions. [2022-11-16 11:08:19,487 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 246 transitions, 820 flow [2022-11-16 11:08:19,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 11:08:19,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 11:08:19,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2860 transitions. [2022-11-16 11:08:19,494 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8318789994182665 [2022-11-16 11:08:19,495 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2860 transitions. [2022-11-16 11:08:19,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2860 transitions. [2022-11-16 11:08:19,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:08:19,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2860 transitions. [2022-11-16 11:08:19,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 158.88888888888889) internal successors, (2860), 18 states have internal predecessors, (2860), 0 states have call successors, (0), 0 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 11:08:19,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 191.0) internal successors, (3629), 19 states have internal predecessors, (3629), 0 states have call successors, (0), 0 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 11:08:19,517 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 191.0) internal successors, (3629), 19 states have internal predecessors, (3629), 0 states have call successors, (0), 0 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 11:08:19,517 INFO L175 Difference]: Start difference. First operand has 164 places, 155 transitions, 342 flow. Second operand 18 states and 2860 transitions. [2022-11-16 11:08:19,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 246 transitions, 820 flow [2022-11-16 11:08:19,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 246 transitions, 818 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:08:19,528 INFO L231 Difference]: Finished difference. Result has 181 places, 167 transitions, 446 flow [2022-11-16 11:08:19,529 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=446, PETRI_PLACES=181, PETRI_TRANSITIONS=167} [2022-11-16 11:08:19,530 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, 15 predicate places. [2022-11-16 11:08:19,530 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 167 transitions, 446 flow [2022-11-16 11:08:19,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 154.66666666666666) internal successors, (1856), 12 states have internal predecessors, (1856), 0 states have call successors, (0), 0 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 11:08:19,533 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:08:19,533 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:19,541 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d60d8343-9563-41a6-b6b2-48955278224c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 11:08:19,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d60d8343-9563-41a6-b6b2-48955278224c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:08:19,740 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 11:08:19,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:19,741 INFO L85 PathProgramCache]: Analyzing trace with hash 55671998, now seen corresponding path program 1 times [2022-11-16 11:08:19,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:19,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776136076] [2022-11-16 11:08:19,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:19,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:19,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:19,869 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:08:19,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:19,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776136076] [2022-11-16 11:08:19,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776136076] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:08:19,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976131695] [2022-11-16 11:08:19,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:19,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:08:19,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d60d8343-9563-41a6-b6b2-48955278224c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:08:19,872 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d60d8343-9563-41a6-b6b2-48955278224c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:08:19,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d60d8343-9563-41a6-b6b2-48955278224c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:08:19,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:19,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:08:19,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:08:20,056 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:08:20,057 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:08:20,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976131695] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:20,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:08:20,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:08:20,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487684096] [2022-11-16 11:08:20,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:20,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:08:20,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:20,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:08:20,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:08:20,061 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 191 [2022-11-16 11:08:20,063 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 167 transitions, 446 flow. Second operand has 6 states, 6 states have (on average 154.33333333333334) internal successors, (926), 6 states have internal predecessors, (926), 0 states have call successors, (0), 0 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 11:08:20,063 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:08:20,063 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 191 [2022-11-16 11:08:20,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:08:21,241 INFO L130 PetriNetUnfolder]: 1881/5428 cut-off events. [2022-11-16 11:08:21,242 INFO L131 PetriNetUnfolder]: For 257/257 co-relation queries the response was YES. [2022-11-16 11:08:21,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8420 conditions, 5428 events. 1881/5428 cut-off events. For 257/257 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 47017 event pairs, 1360 based on Foata normal form. 4/3807 useless extension candidates. Maximal degree in co-relation 6721. Up to 2064 conditions per place. [2022-11-16 11:08:21,350 INFO L137 encePairwiseOnDemand]: 186/191 looper letters, 47 selfloop transitions, 11 changer transitions 0/183 dead transitions. [2022-11-16 11:08:21,351 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 183 transitions, 585 flow [2022-11-16 11:08:21,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:08:21,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:08:21,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1114 transitions. [2022-11-16 11:08:21,358 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8332086761406133 [2022-11-16 11:08:21,359 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1114 transitions. [2022-11-16 11:08:21,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1114 transitions. [2022-11-16 11:08:21,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:08:21,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1114 transitions. [2022-11-16 11:08:21,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 159.14285714285714) internal successors, (1114), 7 states have internal predecessors, (1114), 0 states have call successors, (0), 0 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 11:08:21,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 191.0) internal successors, (1528), 8 states have internal predecessors, (1528), 0 states have call successors, (0), 0 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 11:08:21,367 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 191.0) internal successors, (1528), 8 states have internal predecessors, (1528), 0 states have call successors, (0), 0 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 11:08:21,367 INFO L175 Difference]: Start difference. First operand has 181 places, 167 transitions, 446 flow. Second operand 7 states and 1114 transitions. [2022-11-16 11:08:21,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 183 transitions, 585 flow [2022-11-16 11:08:21,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 183 transitions, 553 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-16 11:08:21,378 INFO L231 Difference]: Finished difference. Result has 177 places, 163 transitions, 409 flow [2022-11-16 11:08:21,379 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=409, PETRI_PLACES=177, PETRI_TRANSITIONS=163} [2022-11-16 11:08:21,382 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, 11 predicate places. [2022-11-16 11:08:21,382 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 163 transitions, 409 flow [2022-11-16 11:08:21,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 154.33333333333334) internal successors, (926), 6 states have internal predecessors, (926), 0 states have call successors, (0), 0 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 11:08:21,383 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:08:21,383 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:21,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d60d8343-9563-41a6-b6b2-48955278224c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:08:21,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d60d8343-9563-41a6-b6b2-48955278224c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:08:21,589 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 11:08:21,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:21,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1767611398, now seen corresponding path program 1 times [2022-11-16 11:08:21,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:21,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701422983] [2022-11-16 11:08:21,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:21,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:21,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:21,689 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 11:08:21,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:21,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701422983] [2022-11-16 11:08:21,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701422983] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:21,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:21,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:08:21,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866204174] [2022-11-16 11:08:21,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:21,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:08:21,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:21,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:08:21,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:08:21,693 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 191 [2022-11-16 11:08:21,694 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 163 transitions, 409 flow. Second operand has 4 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 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 11:08:21,694 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:08:21,695 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 191 [2022-11-16 11:08:21,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:08:26,014 INFO L130 PetriNetUnfolder]: 10936/20458 cut-off events. [2022-11-16 11:08:26,014 INFO L131 PetriNetUnfolder]: For 442/442 co-relation queries the response was YES. [2022-11-16 11:08:26,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37957 conditions, 20458 events. 10936/20458 cut-off events. For 442/442 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 176817 event pairs, 5005 based on Foata normal form. 0/14513 useless extension candidates. Maximal degree in co-relation 30357. Up to 9016 conditions per place. [2022-11-16 11:08:26,228 INFO L137 encePairwiseOnDemand]: 185/191 looper letters, 59 selfloop transitions, 4 changer transitions 0/201 dead transitions. [2022-11-16 11:08:26,228 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 201 transitions, 626 flow [2022-11-16 11:08:26,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:08:26,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:08:26,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 835 transitions. [2022-11-16 11:08:26,231 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8743455497382199 [2022-11-16 11:08:26,231 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 835 transitions. [2022-11-16 11:08:26,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 835 transitions. [2022-11-16 11:08:26,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:08:26,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 835 transitions. [2022-11-16 11:08:26,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 167.0) internal successors, (835), 5 states have internal predecessors, (835), 0 states have call successors, (0), 0 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 11:08:26,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 0 states have call successors, (0), 0 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 11:08:26,237 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 0 states have call successors, (0), 0 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 11:08:26,237 INFO L175 Difference]: Start difference. First operand has 177 places, 163 transitions, 409 flow. Second operand 5 states and 835 transitions. [2022-11-16 11:08:26,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 201 transitions, 626 flow [2022-11-16 11:08:26,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 201 transitions, 612 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:08:26,242 INFO L231 Difference]: Finished difference. Result has 179 places, 166 transitions, 425 flow [2022-11-16 11:08:26,243 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=425, PETRI_PLACES=179, PETRI_TRANSITIONS=166} [2022-11-16 11:08:26,243 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, 13 predicate places. [2022-11-16 11:08:26,244 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 166 transitions, 425 flow [2022-11-16 11:08:26,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 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 11:08:26,244 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:08:26,245 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:26,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:08:26,245 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 11:08:26,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:26,246 INFO L85 PathProgramCache]: Analyzing trace with hash -90147893, now seen corresponding path program 1 times [2022-11-16 11:08:26,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:26,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154314507] [2022-11-16 11:08:26,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:26,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:26,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:26,345 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 11:08:26,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:26,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154314507] [2022-11-16 11:08:26,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154314507] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:26,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:26,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:08:26,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657806111] [2022-11-16 11:08:26,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:26,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:08:26,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:26,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:08:26,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:08:26,349 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 191 [2022-11-16 11:08:26,350 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 166 transitions, 425 flow. Second operand has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 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 11:08:26,351 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:08:26,351 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 191 [2022-11-16 11:08:26,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:08:31,592 INFO L130 PetriNetUnfolder]: 19416/31233 cut-off events. [2022-11-16 11:08:31,593 INFO L131 PetriNetUnfolder]: For 2207/2507 co-relation queries the response was YES. [2022-11-16 11:08:31,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61103 conditions, 31233 events. 19416/31233 cut-off events. For 2207/2507 co-relation queries the response was YES. Maximal size of possible extension queue 1107. Compared 264219 event pairs, 8990 based on Foata normal form. 0/21473 useless extension candidates. Maximal degree in co-relation 48872. Up to 15931 conditions per place. [2022-11-16 11:08:31,897 INFO L137 encePairwiseOnDemand]: 185/191 looper letters, 58 selfloop transitions, 4 changer transitions 0/203 dead transitions. [2022-11-16 11:08:31,897 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 203 transitions, 637 flow [2022-11-16 11:08:31,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:08:31,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:08:31,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 834 transitions. [2022-11-16 11:08:31,900 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8732984293193717 [2022-11-16 11:08:31,901 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 834 transitions. [2022-11-16 11:08:31,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 834 transitions. [2022-11-16 11:08:31,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:08:31,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 834 transitions. [2022-11-16 11:08:31,904 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 11:08:31,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 0 states have call successors, (0), 0 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 11:08:31,906 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 0 states have call successors, (0), 0 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 11:08:31,906 INFO L175 Difference]: Start difference. First operand has 179 places, 166 transitions, 425 flow. Second operand 5 states and 834 transitions. [2022-11-16 11:08:31,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 203 transitions, 637 flow [2022-11-16 11:08:31,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 203 transitions, 635 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:08:31,915 INFO L231 Difference]: Finished difference. Result has 185 places, 169 transitions, 453 flow [2022-11-16 11:08:31,915 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=453, PETRI_PLACES=185, PETRI_TRANSITIONS=169} [2022-11-16 11:08:31,918 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, 19 predicate places. [2022-11-16 11:08:31,919 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 169 transitions, 453 flow [2022-11-16 11:08:31,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 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 11:08:31,919 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:08:31,919 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:31,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:08:31,920 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 11:08:31,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:31,920 INFO L85 PathProgramCache]: Analyzing trace with hash -61331000, now seen corresponding path program 1 times [2022-11-16 11:08:31,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:31,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805011160] [2022-11-16 11:08:31,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:31,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:31,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:32,042 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:08:32,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:32,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805011160] [2022-11-16 11:08:32,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805011160] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:08:32,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281736135] [2022-11-16 11:08:32,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:32,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:08:32,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d60d8343-9563-41a6-b6b2-48955278224c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:08:32,049 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d60d8343-9563-41a6-b6b2-48955278224c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:08:32,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d60d8343-9563-41a6-b6b2-48955278224c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:08:32,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:32,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:08:32,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:08:32,293 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 11:08:32,294 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:08:32,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281736135] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:32,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:08:32,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-11-16 11:08:32,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81844081] [2022-11-16 11:08:32,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:32,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:08:32,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:32,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:08:32,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:08:32,302 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 191 [2022-11-16 11:08:32,304 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 169 transitions, 453 flow. Second operand has 7 states, 7 states have (on average 142.71428571428572) internal successors, (999), 7 states have internal predecessors, (999), 0 states have call successors, (0), 0 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 11:08:32,304 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:08:32,305 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 191 [2022-11-16 11:08:32,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:08:41,471 INFO L130 PetriNetUnfolder]: 30303/59967 cut-off events. [2022-11-16 11:08:41,471 INFO L131 PetriNetUnfolder]: For 8335/8975 co-relation queries the response was YES. [2022-11-16 11:08:41,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114215 conditions, 59967 events. 30303/59967 cut-off events. For 8335/8975 co-relation queries the response was YES. Maximal size of possible extension queue 1597. Compared 629270 event pairs, 23608 based on Foata normal form. 0/41713 useless extension candidates. Maximal degree in co-relation 106340. Up to 38005 conditions per place. [2022-11-16 11:08:41,988 INFO L137 encePairwiseOnDemand]: 182/191 looper letters, 77 selfloop transitions, 8 changer transitions 0/205 dead transitions. [2022-11-16 11:08:41,989 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 205 transitions, 709 flow [2022-11-16 11:08:41,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:08:41,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:08:41,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1198 transitions. [2022-11-16 11:08:41,993 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7840314136125655 [2022-11-16 11:08:41,993 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1198 transitions. [2022-11-16 11:08:41,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1198 transitions. [2022-11-16 11:08:41,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:08:41,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1198 transitions. [2022-11-16 11:08:41,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 149.75) internal successors, (1198), 8 states have internal predecessors, (1198), 0 states have call successors, (0), 0 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 11:08:42,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 191.0) internal successors, (1719), 9 states have internal predecessors, (1719), 0 states have call successors, (0), 0 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 11:08:42,001 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 191.0) internal successors, (1719), 9 states have internal predecessors, (1719), 0 states have call successors, (0), 0 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 11:08:42,001 INFO L175 Difference]: Start difference. First operand has 185 places, 169 transitions, 453 flow. Second operand 8 states and 1198 transitions. [2022-11-16 11:08:42,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 205 transitions, 709 flow [2022-11-16 11:08:42,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 205 transitions, 707 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:08:42,157 INFO L231 Difference]: Finished difference. Result has 194 places, 171 transitions, 485 flow [2022-11-16 11:08:42,157 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=485, PETRI_PLACES=194, PETRI_TRANSITIONS=171} [2022-11-16 11:08:42,160 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, 28 predicate places. [2022-11-16 11:08:42,160 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 171 transitions, 485 flow [2022-11-16 11:08:42,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 142.71428571428572) internal successors, (999), 7 states have internal predecessors, (999), 0 states have call successors, (0), 0 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 11:08:42,163 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:08:42,163 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:42,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d60d8343-9563-41a6-b6b2-48955278224c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:08:42,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d60d8343-9563-41a6-b6b2-48955278224c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 11:08:42,369 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 11:08:42,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:42,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1203857393, now seen corresponding path program 1 times [2022-11-16 11:08:42,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:42,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910891165] [2022-11-16 11:08:42,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:42,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:42,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:42,581 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 11:08:42,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:42,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910891165] [2022-11-16 11:08:42,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910891165] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:42,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:42,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:08:42,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39093991] [2022-11-16 11:08:42,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:42,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:08:42,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:42,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:08:42,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:08:42,585 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 191 [2022-11-16 11:08:42,587 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 171 transitions, 485 flow. Second operand has 7 states, 7 states have (on average 142.42857142857142) internal successors, (997), 7 states have internal predecessors, (997), 0 states have call successors, (0), 0 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 11:08:42,587 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:08:42,587 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 191 [2022-11-16 11:08:42,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:08:50,639 INFO L130 PetriNetUnfolder]: 25786/48481 cut-off events. [2022-11-16 11:08:50,639 INFO L131 PetriNetUnfolder]: For 4522/4616 co-relation queries the response was YES. [2022-11-16 11:08:50,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92640 conditions, 48481 events. 25786/48481 cut-off events. For 4522/4616 co-relation queries the response was YES. Maximal size of possible extension queue 1653. Compared 494718 event pairs, 24477 based on Foata normal form. 94/36773 useless extension candidates. Maximal degree in co-relation 89273. Up to 34745 conditions per place. [2022-11-16 11:08:51,344 INFO L137 encePairwiseOnDemand]: 182/191 looper letters, 70 selfloop transitions, 8 changer transitions 0/201 dead transitions. [2022-11-16 11:08:51,345 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 201 transitions, 713 flow [2022-11-16 11:08:51,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:08:51,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:08:51,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1193 transitions. [2022-11-16 11:08:51,348 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7807591623036649 [2022-11-16 11:08:51,348 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1193 transitions. [2022-11-16 11:08:51,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1193 transitions. [2022-11-16 11:08:51,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:08:51,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1193 transitions. [2022-11-16 11:08:51,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 149.125) internal successors, (1193), 8 states have internal predecessors, (1193), 0 states have call successors, (0), 0 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 11:08:51,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 191.0) internal successors, (1719), 9 states have internal predecessors, (1719), 0 states have call successors, (0), 0 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 11:08:51,356 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 191.0) internal successors, (1719), 9 states have internal predecessors, (1719), 0 states have call successors, (0), 0 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 11:08:51,356 INFO L175 Difference]: Start difference. First operand has 194 places, 171 transitions, 485 flow. Second operand 8 states and 1193 transitions. [2022-11-16 11:08:51,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 201 transitions, 713 flow [2022-11-16 11:08:51,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 201 transitions, 703 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:08:51,385 INFO L231 Difference]: Finished difference. Result has 199 places, 172 transitions, 500 flow [2022-11-16 11:08:51,386 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=500, PETRI_PLACES=199, PETRI_TRANSITIONS=172} [2022-11-16 11:08:51,387 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, 33 predicate places. [2022-11-16 11:08:51,387 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 172 transitions, 500 flow [2022-11-16 11:08:51,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 142.42857142857142) internal successors, (997), 7 states have internal predecessors, (997), 0 states have call successors, (0), 0 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 11:08:51,387 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:08:51,388 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:51,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:08:51,388 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 11:08:51,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:51,388 INFO L85 PathProgramCache]: Analyzing trace with hash 2078401902, now seen corresponding path program 1 times [2022-11-16 11:08:51,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:51,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630255855] [2022-11-16 11:08:51,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:51,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:51,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:51,483 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 11:08:51,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:51,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630255855] [2022-11-16 11:08:51,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630255855] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:51,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:51,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:08:51,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828559693] [2022-11-16 11:08:51,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:51,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:08:51,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:51,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:08:51,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:08:51,486 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 191 [2022-11-16 11:08:51,487 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 172 transitions, 500 flow. Second operand has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 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 11:08:51,487 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:08:51,487 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 191 [2022-11-16 11:08:51,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:08:53,002 INFO L130 PetriNetUnfolder]: 3211/10784 cut-off events. [2022-11-16 11:08:53,002 INFO L131 PetriNetUnfolder]: For 1072/1072 co-relation queries the response was YES. [2022-11-16 11:08:53,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18435 conditions, 10784 events. 3211/10784 cut-off events. For 1072/1072 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 114596 event pairs, 463 based on Foata normal form. 0/8660 useless extension candidates. Maximal degree in co-relation 17637. Up to 3707 conditions per place. [2022-11-16 11:08:53,073 INFO L137 encePairwiseOnDemand]: 188/191 looper letters, 22 selfloop transitions, 2 changer transitions 0/180 dead transitions. [2022-11-16 11:08:53,073 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 180 transitions, 568 flow [2022-11-16 11:08:53,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:08:53,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:08:53,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 514 transitions. [2022-11-16 11:08:53,076 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8970331588132635 [2022-11-16 11:08:53,076 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 514 transitions. [2022-11-16 11:08:53,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 514 transitions. [2022-11-16 11:08:53,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:08:53,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 514 transitions. [2022-11-16 11:08:53,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 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 11:08:53,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 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 11:08:53,086 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 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 11:08:53,087 INFO L175 Difference]: Start difference. First operand has 199 places, 172 transitions, 500 flow. Second operand 3 states and 514 transitions. [2022-11-16 11:08:53,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 180 transitions, 568 flow [2022-11-16 11:08:53,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 180 transitions, 555 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:08:53,129 INFO L231 Difference]: Finished difference. Result has 197 places, 172 transitions, 495 flow [2022-11-16 11:08:53,130 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=495, PETRI_PLACES=197, PETRI_TRANSITIONS=172} [2022-11-16 11:08:53,130 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, 31 predicate places. [2022-11-16 11:08:53,130 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 172 transitions, 495 flow [2022-11-16 11:08:53,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 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 11:08:53,131 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:08:53,131 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:53,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:08:53,132 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 11:08:53,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:53,132 INFO L85 PathProgramCache]: Analyzing trace with hash 5949090, now seen corresponding path program 1 times [2022-11-16 11:08:53,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:53,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712765091] [2022-11-16 11:08:53,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:53,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:53,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:53,318 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 11:08:53,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:53,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712765091] [2022-11-16 11:08:53,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712765091] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:53,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:53,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:08:53,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504909261] [2022-11-16 11:08:53,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:53,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:08:53,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:53,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:08:53,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:08:53,326 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 191 [2022-11-16 11:08:53,326 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 172 transitions, 495 flow. Second operand has 3 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 0 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 11:08:53,327 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:08:53,327 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 191 [2022-11-16 11:08:53,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:08:54,911 INFO L130 PetriNetUnfolder]: 3487/10998 cut-off events. [2022-11-16 11:08:54,911 INFO L131 PetriNetUnfolder]: For 1763/1763 co-relation queries the response was YES. [2022-11-16 11:08:54,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20125 conditions, 10998 events. 3487/10998 cut-off events. For 1763/1763 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 114280 event pairs, 753 based on Foata normal form. 78/9583 useless extension candidates. Maximal degree in co-relation 19228. Up to 3706 conditions per place. [2022-11-16 11:08:55,010 INFO L137 encePairwiseOnDemand]: 188/191 looper letters, 23 selfloop transitions, 2 changer transitions 0/180 dead transitions. [2022-11-16 11:08:55,011 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 180 transitions, 568 flow [2022-11-16 11:08:55,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:08:55,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:08:55,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 512 transitions. [2022-11-16 11:08:55,014 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.893542757417103 [2022-11-16 11:08:55,014 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 512 transitions. [2022-11-16 11:08:55,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 512 transitions. [2022-11-16 11:08:55,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:08:55,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 512 transitions. [2022-11-16 11:08:55,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 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 11:08:55,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 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 11:08:55,022 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 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 11:08:55,023 INFO L175 Difference]: Start difference. First operand has 197 places, 172 transitions, 495 flow. Second operand 3 states and 512 transitions. [2022-11-16 11:08:55,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 180 transitions, 568 flow [2022-11-16 11:08:55,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 180 transitions, 562 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:08:55,069 INFO L231 Difference]: Finished difference. Result has 198 places, 172 transitions, 499 flow [2022-11-16 11:08:55,070 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=499, PETRI_PLACES=198, PETRI_TRANSITIONS=172} [2022-11-16 11:08:55,071 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, 32 predicate places. [2022-11-16 11:08:55,071 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 172 transitions, 499 flow [2022-11-16 11:08:55,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 0 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 11:08:55,072 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:08:55,072 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:55,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:08:55,073 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 11:08:55,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:55,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1373293453, now seen corresponding path program 1 times [2022-11-16 11:08:55,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:55,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382200913] [2022-11-16 11:08:55,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:55,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:55,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:55,181 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:08:55,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:55,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382200913] [2022-11-16 11:08:55,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382200913] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:08:55,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565490491] [2022-11-16 11:08:55,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:55,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:08:55,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d60d8343-9563-41a6-b6b2-48955278224c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:08:55,184 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d60d8343-9563-41a6-b6b2-48955278224c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:08:55,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d60d8343-9563-41a6-b6b2-48955278224c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:08:55,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:55,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:08:55,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:08:55,493 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 11:08:55,493 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:08:55,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565490491] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:55,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:08:55,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-11-16 11:08:55,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196104941] [2022-11-16 11:08:55,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:55,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:08:55,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:55,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:08:55,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:08:55,498 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 191 [2022-11-16 11:08:55,500 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 172 transitions, 499 flow. Second operand has 7 states, 7 states have (on average 142.85714285714286) internal successors, (1000), 7 states have internal predecessors, (1000), 0 states have call successors, (0), 0 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 11:08:55,500 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:08:55,500 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 191 [2022-11-16 11:08:55,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:03,993 INFO L130 PetriNetUnfolder]: 28637/55133 cut-off events. [2022-11-16 11:09:03,994 INFO L131 PetriNetUnfolder]: For 21221/21299 co-relation queries the response was YES. [2022-11-16 11:09:04,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117592 conditions, 55133 events. 28637/55133 cut-off events. For 21221/21299 co-relation queries the response was YES. Maximal size of possible extension queue 1713. Compared 571712 event pairs, 23313 based on Foata normal form. 78/45827 useless extension candidates. Maximal degree in co-relation 116428. Up to 38437 conditions per place. [2022-11-16 11:09:04,419 INFO L137 encePairwiseOnDemand]: 182/191 looper letters, 65 selfloop transitions, 8 changer transitions 2/197 dead transitions. [2022-11-16 11:09:04,419 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 197 transitions, 722 flow [2022-11-16 11:09:04,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:09:04,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:09:04,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1188 transitions. [2022-11-16 11:09:04,423 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7774869109947644 [2022-11-16 11:09:04,424 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1188 transitions. [2022-11-16 11:09:04,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1188 transitions. [2022-11-16 11:09:04,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:04,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1188 transitions. [2022-11-16 11:09:04,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 148.5) internal successors, (1188), 8 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 11:09:04,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 191.0) internal successors, (1719), 9 states have internal predecessors, (1719), 0 states have call successors, (0), 0 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 11:09:04,430 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 191.0) internal successors, (1719), 9 states have internal predecessors, (1719), 0 states have call successors, (0), 0 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 11:09:04,430 INFO L175 Difference]: Start difference. First operand has 198 places, 172 transitions, 499 flow. Second operand 8 states and 1188 transitions. [2022-11-16 11:09:04,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 197 transitions, 722 flow [2022-11-16 11:09:04,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 197 transitions, 718 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:09:04,583 INFO L231 Difference]: Finished difference. Result has 205 places, 173 transitions, 522 flow [2022-11-16 11:09:04,584 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=522, PETRI_PLACES=205, PETRI_TRANSITIONS=173} [2022-11-16 11:09:04,584 INFO L288 CegarLoopForPetriNet]: 166 programPoint places, 39 predicate places. [2022-11-16 11:09:04,585 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 173 transitions, 522 flow [2022-11-16 11:09:04,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 142.85714285714286) internal successors, (1000), 7 states have internal predecessors, (1000), 0 states have call successors, (0), 0 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 11:09:04,585 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:04,585 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:04,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d60d8343-9563-41a6-b6b2-48955278224c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:09:04,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d60d8343-9563-41a6-b6b2-48955278224c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:09:04,791 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 11:09:04,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:04,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1421603299, now seen corresponding path program 1 times [2022-11-16 11:09:04,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:04,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486693143] [2022-11-16 11:09:04,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:04,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:05,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:05,266 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 11:09:05,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:05,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486693143] [2022-11-16 11:09:05,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486693143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:09:05,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:09:05,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:09:05,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834176445] [2022-11-16 11:09:05,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:05,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:09:05,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:05,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:09:05,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:09:05,272 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 191 [2022-11-16 11:09:05,273 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 173 transitions, 522 flow. Second operand has 3 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 0 states have call successors, (0), 0 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 11:09:05,273 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:05,273 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 191 [2022-11-16 11:09:05,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand