./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b 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_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4b8273370cd4ec5730806cf9b8f54c915e93daab6c48b9546d3920e402afdc55 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:02:36,927 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:02:36,929 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:02:36,965 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:02:36,966 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:02:36,967 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:02:36,969 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:02:36,970 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:02:36,972 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:02:36,973 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:02:36,974 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:02:36,977 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:02:36,979 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:02:36,980 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:02:36,983 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:02:36,986 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:02:36,988 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:02:36,993 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:02:36,995 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:02:36,997 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:02:37,000 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:02:37,001 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:02:37,003 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:02:37,005 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:02:37,009 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:02:37,016 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:02:37,017 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:02:37,018 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:02:37,020 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:02:37,021 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:02:37,023 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:02:37,024 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:02:37,025 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:02:37,027 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:02:37,028 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:02:37,029 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:02:37,029 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:02:37,030 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:02:37,030 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:02:37,032 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:02:37,033 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:02:37,034 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 11:02:37,071 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:02:37,072 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:02:37,072 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:02:37,073 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:02:37,074 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:02:37,074 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:02:37,075 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:02:37,075 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:02:37,076 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:02:37,076 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:02:37,077 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:02:37,077 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:02:37,078 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:02:37,078 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:02:37,078 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:02:37,078 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:02:37,079 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:02:37,079 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:02:37,079 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 11:02:37,079 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:02:37,080 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:02:37,080 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:02:37,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:02:37,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:02:37,081 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:02:37,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:02:37,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:02:37,081 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:02:37,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:02:37,082 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:02:37,083 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:02:37,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:02:37,083 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:02:37,084 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:02:37,084 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:02:37,084 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_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b8273370cd4ec5730806cf9b8f54c915e93daab6c48b9546d3920e402afdc55 [2022-11-20 11:02:37,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:02:37,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:02:37,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:02:37,388 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:02:37,389 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:02:37,390 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c [2022-11-20 11:02:40,573 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:02:40,815 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:02:40,815 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c [2022-11-20 11:02:40,825 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/data/09d69e792/1a765543dfb6474f9eba899c1462e3e4/FLAG923c86b4d [2022-11-20 11:02:40,842 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/data/09d69e792/1a765543dfb6474f9eba899c1462e3e4 [2022-11-20 11:02:40,846 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:02:40,847 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:02:40,849 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:02:40,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:02:40,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:02:40,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:02:40" (1/1) ... [2022-11-20 11:02:40,857 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cee2871 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:40, skipping insertion in model container [2022-11-20 11:02:40,857 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:02:40" (1/1) ... [2022-11-20 11:02:40,869 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:02:40,893 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:02:41,108 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c[2691,2704] [2022-11-20 11:02:41,120 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:02:41,132 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:02:41,160 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c[2691,2704] [2022-11-20 11:02:41,163 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:02:41,180 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:02:41,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:41 WrapperNode [2022-11-20 11:02:41,180 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:02:41,182 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:02:41,182 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:02:41,182 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:02:41,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:41" (1/1) ... [2022-11-20 11:02:41,200 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:41" (1/1) ... [2022-11-20 11:02:41,236 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 156 [2022-11-20 11:02:41,240 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:02:41,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:02:41,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:02:41,241 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:02:41,252 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:41" (1/1) ... [2022-11-20 11:02:41,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:41" (1/1) ... [2022-11-20 11:02:41,274 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:41" (1/1) ... [2022-11-20 11:02:41,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:41" (1/1) ... [2022-11-20 11:02:41,292 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:41" (1/1) ... [2022-11-20 11:02:41,306 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:41" (1/1) ... [2022-11-20 11:02:41,324 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:41" (1/1) ... [2022-11-20 11:02:41,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:41" (1/1) ... [2022-11-20 11:02:41,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:02:41,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:02:41,330 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:02:41,330 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:02:41,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:41" (1/1) ... [2022-11-20 11:02:41,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:02:41,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:02:41,385 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:02:41,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:02:41,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:02:41,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:02:41,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:02:41,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:02:41,432 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 11:02:41,432 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 11:02:41,432 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 11:02:41,432 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 11:02:41,433 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 11:02:41,433 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 11:02:41,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:02:41,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 11:02:41,434 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 11:02:41,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:02:41,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:02:41,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:02:41,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:02:41,436 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 11:02:41,625 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:02:41,627 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:02:42,120 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:02:42,203 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:02:42,203 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-20 11:02:42,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:02:42 BoogieIcfgContainer [2022-11-20 11:02:42,206 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:02:42,209 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:02:42,209 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:02:42,213 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:02:42,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:02:40" (1/3) ... [2022-11-20 11:02:42,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f5ff28f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:02:42, skipping insertion in model container [2022-11-20 11:02:42,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:41" (2/3) ... [2022-11-20 11:02:42,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f5ff28f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:02:42, skipping insertion in model container [2022-11-20 11:02:42,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:02:42" (3/3) ... [2022-11-20 11:02:42,217 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-sum.wvr.c [2022-11-20 11:02:42,226 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:02:42,238 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:02:42,238 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-11-20 11:02:42,239 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:02:42,332 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 11:02:42,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 243 places, 253 transitions, 530 flow [2022-11-20 11:02:42,480 INFO L130 PetriNetUnfolder]: 20/250 cut-off events. [2022-11-20 11:02:42,486 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 11:02:42,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 250 events. 20/250 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 236 event pairs, 0 based on Foata normal form. 0/216 useless extension candidates. Maximal degree in co-relation 206. Up to 3 conditions per place. [2022-11-20 11:02:42,496 INFO L82 GeneralOperation]: Start removeDead. Operand has 243 places, 253 transitions, 530 flow [2022-11-20 11:02:42,506 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 220 places, 229 transitions, 473 flow [2022-11-20 11:02:42,518 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:02:42,524 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;@3b29c763, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:02:42,525 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-20 11:02:42,540 INFO L130 PetriNetUnfolder]: 3/60 cut-off events. [2022-11-20 11:02:42,541 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:02:42,541 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:02:42,542 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] [2022-11-20 11:02:42,542 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-20 11:02:42,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:02:42,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1818961626, now seen corresponding path program 1 times [2022-11-20 11:02:42,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:02:42,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117845763] [2022-11-20 11:02:42,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:42,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:02:42,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:42,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:02:42,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:02:42,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117845763] [2022-11-20 11:02:42,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117845763] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:02:42,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:02:42,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:02:42,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896839750] [2022-11-20 11:02:42,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:02:42,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:02:42,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:02:43,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:02:43,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:02:43,027 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 253 [2022-11-20 11:02:43,032 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 229 transitions, 473 flow. Second operand has 4 states, 4 states have (on average 194.5) internal successors, (778), 4 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:43,032 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:02:43,033 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 253 [2022-11-20 11:02:43,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:02:43,427 INFO L130 PetriNetUnfolder]: 75/517 cut-off events. [2022-11-20 11:02:43,428 INFO L131 PetriNetUnfolder]: For 84/84 co-relation queries the response was YES. [2022-11-20 11:02:43,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 740 conditions, 517 events. 75/517 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1873 event pairs, 34 based on Foata normal form. 68/475 useless extension candidates. Maximal degree in co-relation 369. Up to 93 conditions per place. [2022-11-20 11:02:43,441 INFO L137 encePairwiseOnDemand]: 221/253 looper letters, 66 selfloop transitions, 14 changer transitions 6/252 dead transitions. [2022-11-20 11:02:43,442 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 252 transitions, 694 flow [2022-11-20 11:02:43,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:02:43,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:02:43,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1069 transitions. [2022-11-20 11:02:43,469 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8450592885375494 [2022-11-20 11:02:43,470 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1069 transitions. [2022-11-20 11:02:43,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1069 transitions. [2022-11-20 11:02:43,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:02:43,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1069 transitions. [2022-11-20 11:02:43,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 213.8) internal successors, (1069), 5 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:43,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:43,500 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:43,502 INFO L175 Difference]: Start difference. First operand has 220 places, 229 transitions, 473 flow. Second operand 5 states and 1069 transitions. [2022-11-20 11:02:43,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 252 transitions, 694 flow [2022-11-20 11:02:43,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 252 transitions, 676 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 11:02:43,519 INFO L231 Difference]: Finished difference. Result has 222 places, 222 transitions, 532 flow [2022-11-20 11:02:43,521 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=532, PETRI_PLACES=222, PETRI_TRANSITIONS=222} [2022-11-20 11:02:43,529 INFO L288 CegarLoopForPetriNet]: 220 programPoint places, 2 predicate places. [2022-11-20 11:02:43,529 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 222 transitions, 532 flow [2022-11-20 11:02:43,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 194.5) internal successors, (778), 4 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:43,530 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:02:43,531 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:02:43,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:02:43,532 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-20 11:02:43,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:02:43,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1025513994, now seen corresponding path program 1 times [2022-11-20 11:02:43,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:02:43,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991520341] [2022-11-20 11:02:43,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:43,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:02:43,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:43,774 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:02:43,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:02:43,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991520341] [2022-11-20 11:02:43,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991520341] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:02:43,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120924480] [2022-11-20 11:02:43,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:43,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:02:43,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:02:43,780 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:02:43,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:02:43,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:43,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:02:43,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:02:44,029 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:02:44,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:02:44,127 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:02:44,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120924480] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:02:44,131 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:02:44,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 11:02:44,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556382572] [2022-11-20 11:02:44,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:02:44,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:02:44,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:02:44,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:02:44,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:02:44,140 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 253 [2022-11-20 11:02:44,145 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 222 transitions, 532 flow. Second operand has 12 states, 12 states have (on average 195.66666666666666) internal successors, (2348), 12 states have internal predecessors, (2348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:44,145 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:02:44,145 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 253 [2022-11-20 11:02:44,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:02:44,935 INFO L130 PetriNetUnfolder]: 186/1153 cut-off events. [2022-11-20 11:02:44,936 INFO L131 PetriNetUnfolder]: For 103/103 co-relation queries the response was YES. [2022-11-20 11:02:44,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1706 conditions, 1153 events. 186/1153 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 6143 event pairs, 85 based on Foata normal form. 9/917 useless extension candidates. Maximal degree in co-relation 1016. Up to 84 conditions per place. [2022-11-20 11:02:44,949 INFO L137 encePairwiseOnDemand]: 230/253 looper letters, 129 selfloop transitions, 62 changer transitions 0/357 dead transitions. [2022-11-20 11:02:44,949 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 357 transitions, 1286 flow [2022-11-20 11:02:44,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 11:02:44,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 11:02:44,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3674 transitions. [2022-11-20 11:02:44,957 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8067632850241546 [2022-11-20 11:02:44,958 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3674 transitions. [2022-11-20 11:02:44,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3674 transitions. [2022-11-20 11:02:44,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:02:44,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3674 transitions. [2022-11-20 11:02:44,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 204.11111111111111) internal successors, (3674), 18 states have internal predecessors, (3674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:44,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 253.0) internal successors, (4807), 19 states have internal predecessors, (4807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:44,982 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 253.0) internal successors, (4807), 19 states have internal predecessors, (4807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:44,982 INFO L175 Difference]: Start difference. First operand has 222 places, 222 transitions, 532 flow. Second operand 18 states and 3674 transitions. [2022-11-20 11:02:44,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 357 transitions, 1286 flow [2022-11-20 11:02:44,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 357 transitions, 1278 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:02:44,992 INFO L231 Difference]: Finished difference. Result has 236 places, 264 transitions, 894 flow [2022-11-20 11:02:44,992 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=894, PETRI_PLACES=236, PETRI_TRANSITIONS=264} [2022-11-20 11:02:44,993 INFO L288 CegarLoopForPetriNet]: 220 programPoint places, 16 predicate places. [2022-11-20 11:02:44,994 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 264 transitions, 894 flow [2022-11-20 11:02:44,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 195.66666666666666) internal successors, (2348), 12 states have internal predecessors, (2348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:44,995 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:02:44,996 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] [2022-11-20 11:02:45,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:02:45,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:02:45,203 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-20 11:02:45,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:02:45,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1726163209, now seen corresponding path program 1 times [2022-11-20 11:02:45,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:02:45,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904095541] [2022-11-20 11:02:45,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:45,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:02:45,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:45,390 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:02:45,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:02:45,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904095541] [2022-11-20 11:02:45,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904095541] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:02:45,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601954661] [2022-11-20 11:02:45,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:45,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:02:45,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:02:45,394 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:02:45,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:02:45,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:45,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:02:45,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:02:45,596 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:02:45,597 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:02:45,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601954661] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:02:45,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:02:45,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 11:02:45,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880882386] [2022-11-20 11:02:45,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:02:45,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:02:45,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:02:45,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:02:45,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:02:45,603 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 253 [2022-11-20 11:02:45,605 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 264 transitions, 894 flow. Second operand has 6 states, 6 states have (on average 195.33333333333334) internal successors, (1172), 6 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:45,606 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:02:45,606 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 253 [2022-11-20 11:02:45,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:02:46,145 INFO L130 PetriNetUnfolder]: 186/1141 cut-off events. [2022-11-20 11:02:46,146 INFO L131 PetriNetUnfolder]: For 255/255 co-relation queries the response was YES. [2022-11-20 11:02:46,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1762 conditions, 1141 events. 186/1141 cut-off events. For 255/255 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 6028 event pairs, 85 based on Foata normal form. 12/908 useless extension candidates. Maximal degree in co-relation 1363. Up to 264 conditions per place. [2022-11-20 11:02:46,162 INFO L137 encePairwiseOnDemand]: 236/253 looper letters, 67 selfloop transitions, 43 changer transitions 0/276 dead transitions. [2022-11-20 11:02:46,163 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 276 transitions, 1093 flow [2022-11-20 11:02:46,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:02:46,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:02:46,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1431 transitions. [2022-11-20 11:02:46,168 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8080180688876341 [2022-11-20 11:02:46,168 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1431 transitions. [2022-11-20 11:02:46,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1431 transitions. [2022-11-20 11:02:46,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:02:46,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1431 transitions. [2022-11-20 11:02:46,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 204.42857142857142) internal successors, (1431), 7 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:46,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 253.0) internal successors, (2024), 8 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:46,179 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 253.0) internal successors, (2024), 8 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:46,180 INFO L175 Difference]: Start difference. First operand has 236 places, 264 transitions, 894 flow. Second operand 7 states and 1431 transitions. [2022-11-20 11:02:46,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 276 transitions, 1093 flow [2022-11-20 11:02:46,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 276 transitions, 977 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-11-20 11:02:46,199 INFO L231 Difference]: Finished difference. Result has 230 places, 252 transitions, 783 flow [2022-11-20 11:02:46,200 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=783, PETRI_PLACES=230, PETRI_TRANSITIONS=252} [2022-11-20 11:02:46,207 INFO L288 CegarLoopForPetriNet]: 220 programPoint places, 10 predicate places. [2022-11-20 11:02:46,207 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 252 transitions, 783 flow [2022-11-20 11:02:46,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 195.33333333333334) internal successors, (1172), 6 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:46,208 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:02:46,209 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:02:46,220 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-20 11:02:46,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:02:46,415 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-20 11:02:46,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:02:46,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1188441190, now seen corresponding path program 2 times [2022-11-20 11:02:46,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:02:46,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490460072] [2022-11-20 11:02:46,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:46,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:02:46,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:46,781 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:02:46,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:02:46,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490460072] [2022-11-20 11:02:46,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490460072] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:02:46,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927369965] [2022-11-20 11:02:46,783 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:02:46,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:02:46,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:02:46,784 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:02:46,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:02:46,910 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:02:46,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:02:46,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:02:46,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:02:47,123 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-20 11:02:47,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:02:47,306 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-20 11:02:47,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927369965] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:02:47,306 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:02:47,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-20 11:02:47,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911433901] [2022-11-20 11:02:47,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:02:47,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:02:47,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:02:47,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:02:47,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:02:47,313 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 253 [2022-11-20 11:02:47,317 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 252 transitions, 783 flow. Second operand has 18 states, 18 states have (on average 170.61111111111111) internal successors, (3071), 18 states have internal predecessors, (3071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:47,317 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:02:47,318 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 253 [2022-11-20 11:02:47,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:02:49,510 INFO L130 PetriNetUnfolder]: 1842/5394 cut-off events. [2022-11-20 11:02:49,510 INFO L131 PetriNetUnfolder]: For 409/409 co-relation queries the response was YES. [2022-11-20 11:02:49,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8694 conditions, 5394 events. 1842/5394 cut-off events. For 409/409 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 42639 event pairs, 1127 based on Foata normal form. 6/3531 useless extension candidates. Maximal degree in co-relation 6938. Up to 427 conditions per place. [2022-11-20 11:02:49,570 INFO L137 encePairwiseOnDemand]: 226/253 looper letters, 224 selfloop transitions, 81 changer transitions 0/445 dead transitions. [2022-11-20 11:02:49,571 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 445 transitions, 1882 flow [2022-11-20 11:02:49,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 11:02:49,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-20 11:02:49,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4319 transitions. [2022-11-20 11:02:49,583 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7112977602108037 [2022-11-20 11:02:49,584 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4319 transitions. [2022-11-20 11:02:49,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4319 transitions. [2022-11-20 11:02:49,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:02:49,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4319 transitions. [2022-11-20 11:02:49,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 179.95833333333334) internal successors, (4319), 24 states have internal predecessors, (4319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:49,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 253.0) internal successors, (6325), 25 states have internal predecessors, (6325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:49,614 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 253.0) internal successors, (6325), 25 states have internal predecessors, (6325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:49,615 INFO L175 Difference]: Start difference. First operand has 230 places, 252 transitions, 783 flow. Second operand 24 states and 4319 transitions. [2022-11-20 11:02:49,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 445 transitions, 1882 flow [2022-11-20 11:02:49,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 445 transitions, 1791 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-20 11:02:49,627 INFO L231 Difference]: Finished difference. Result has 242 places, 268 transitions, 946 flow [2022-11-20 11:02:49,628 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=946, PETRI_PLACES=242, PETRI_TRANSITIONS=268} [2022-11-20 11:02:49,629 INFO L288 CegarLoopForPetriNet]: 220 programPoint places, 22 predicate places. [2022-11-20 11:02:49,629 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 268 transitions, 946 flow [2022-11-20 11:02:49,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 170.61111111111111) internal successors, (3071), 18 states have internal predecessors, (3071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:49,631 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:02:49,631 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:02:49,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:02:49,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:02:49,838 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-20 11:02:49,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:02:49,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1967586284, now seen corresponding path program 1 times [2022-11-20 11:02:49,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:02:49,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474130598] [2022-11-20 11:02:49,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:49,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:02:49,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:49,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:02:49,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:02:49,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474130598] [2022-11-20 11:02:49,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474130598] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:02:49,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:02:49,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:02:49,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178884938] [2022-11-20 11:02:49,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:02:49,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:02:49,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:02:49,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:02:49,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:02:49,992 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 253 [2022-11-20 11:02:49,993 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 268 transitions, 946 flow. Second operand has 3 states, 3 states have (on average 225.66666666666666) internal successors, (677), 3 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:49,993 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:02:49,993 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 253 [2022-11-20 11:02:49,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:02:50,470 INFO L130 PetriNetUnfolder]: 512/2279 cut-off events. [2022-11-20 11:02:50,470 INFO L131 PetriNetUnfolder]: For 343/343 co-relation queries the response was YES. [2022-11-20 11:02:50,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3669 conditions, 2279 events. 512/2279 cut-off events. For 343/343 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 16799 event pairs, 259 based on Foata normal form. 0/1873 useless extension candidates. Maximal degree in co-relation 654. Up to 596 conditions per place. [2022-11-20 11:02:50,494 INFO L137 encePairwiseOnDemand]: 249/253 looper letters, 21 selfloop transitions, 2 changer transitions 0/277 dead transitions. [2022-11-20 11:02:50,494 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 277 transitions, 1014 flow [2022-11-20 11:02:50,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:02:50,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:02:50,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 697 transitions. [2022-11-20 11:02:50,497 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9183135704874835 [2022-11-20 11:02:50,497 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 697 transitions. [2022-11-20 11:02:50,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 697 transitions. [2022-11-20 11:02:50,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:02:50,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 697 transitions. [2022-11-20 11:02:50,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 232.33333333333334) internal successors, (697), 3 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:50,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:50,502 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:50,502 INFO L175 Difference]: Start difference. First operand has 242 places, 268 transitions, 946 flow. Second operand 3 states and 697 transitions. [2022-11-20 11:02:50,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 277 transitions, 1014 flow [2022-11-20 11:02:50,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 277 transitions, 891 flow, removed 12 selfloop flow, removed 15 redundant places. [2022-11-20 11:02:50,511 INFO L231 Difference]: Finished difference. Result has 230 places, 269 transitions, 837 flow [2022-11-20 11:02:50,512 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=823, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=837, PETRI_PLACES=230, PETRI_TRANSITIONS=269} [2022-11-20 11:02:50,514 INFO L288 CegarLoopForPetriNet]: 220 programPoint places, 10 predicate places. [2022-11-20 11:02:50,514 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 269 transitions, 837 flow [2022-11-20 11:02:50,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.66666666666666) internal successors, (677), 3 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:50,515 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:02:50,515 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:02:50,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:02:50,516 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-20 11:02:50,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:02:50,516 INFO L85 PathProgramCache]: Analyzing trace with hash -804736836, now seen corresponding path program 1 times [2022-11-20 11:02:50,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:02:50,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519603342] [2022-11-20 11:02:50,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:50,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:02:50,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:50,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:02:50,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:02:50,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519603342] [2022-11-20 11:02:50,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519603342] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:02:50,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:02:50,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:02:50,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291269246] [2022-11-20 11:02:50,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:02:50,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:02:50,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:02:50,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:02:50,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:02:50,642 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 253 [2022-11-20 11:02:50,643 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 269 transitions, 837 flow. Second operand has 4 states, 4 states have (on average 218.75) internal successors, (875), 4 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:50,644 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:02:50,644 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 253 [2022-11-20 11:02:50,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:02:53,528 INFO L130 PetriNetUnfolder]: 3830/10945 cut-off events. [2022-11-20 11:02:53,530 INFO L131 PetriNetUnfolder]: For 732/1299 co-relation queries the response was YES. [2022-11-20 11:02:53,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20190 conditions, 10945 events. 3830/10945 cut-off events. For 732/1299 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 112901 event pairs, 2562 based on Foata normal form. 434/9216 useless extension candidates. Maximal degree in co-relation 4070. Up to 3487 conditions per place. [2022-11-20 11:02:53,698 INFO L137 encePairwiseOnDemand]: 247/253 looper letters, 46 selfloop transitions, 4 changer transitions 0/298 dead transitions. [2022-11-20 11:02:53,699 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 298 transitions, 1018 flow [2022-11-20 11:02:53,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:02:53,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:02:53,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1137 transitions. [2022-11-20 11:02:53,704 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8988142292490119 [2022-11-20 11:02:53,704 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1137 transitions. [2022-11-20 11:02:53,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1137 transitions. [2022-11-20 11:02:53,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:02:53,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1137 transitions. [2022-11-20 11:02:53,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 227.4) internal successors, (1137), 5 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:53,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:53,714 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:53,714 INFO L175 Difference]: Start difference. First operand has 230 places, 269 transitions, 837 flow. Second operand 5 states and 1137 transitions. [2022-11-20 11:02:53,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 298 transitions, 1018 flow [2022-11-20 11:02:53,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 298 transitions, 1016 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:02:53,726 INFO L231 Difference]: Finished difference. Result has 236 places, 272 transitions, 865 flow [2022-11-20 11:02:53,727 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=865, PETRI_PLACES=236, PETRI_TRANSITIONS=272} [2022-11-20 11:02:53,730 INFO L288 CegarLoopForPetriNet]: 220 programPoint places, 16 predicate places. [2022-11-20 11:02:53,730 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 272 transitions, 865 flow [2022-11-20 11:02:53,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 218.75) internal successors, (875), 4 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:53,731 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:02:53,732 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:02:53,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:02:53,732 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-20 11:02:53,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:02:53,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1064786281, now seen corresponding path program 1 times [2022-11-20 11:02:53,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:02:53,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324695018] [2022-11-20 11:02:53,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:53,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:02:53,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:53,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:02:53,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:02:53,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324695018] [2022-11-20 11:02:53,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324695018] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:02:53,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:02:53,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:02:53,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403120520] [2022-11-20 11:02:53,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:02:53,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:02:53,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:02:53,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:02:53,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:02:53,910 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 253 [2022-11-20 11:02:53,912 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 272 transitions, 865 flow. Second operand has 4 states, 4 states have (on average 220.75) internal successors, (883), 4 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:53,912 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:02:53,912 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 253 [2022-11-20 11:02:53,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:02:55,383 INFO L130 PetriNetUnfolder]: 1765/6381 cut-off events. [2022-11-20 11:02:55,384 INFO L131 PetriNetUnfolder]: For 809/928 co-relation queries the response was YES. [2022-11-20 11:02:55,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9826 conditions, 6381 events. 1765/6381 cut-off events. For 809/928 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 62165 event pairs, 707 based on Foata normal form. 14/4883 useless extension candidates. Maximal degree in co-relation 6457. Up to 1695 conditions per place. [2022-11-20 11:02:55,477 INFO L137 encePairwiseOnDemand]: 247/253 looper letters, 33 selfloop transitions, 4 changer transitions 0/289 dead transitions. [2022-11-20 11:02:55,478 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 289 transitions, 983 flow [2022-11-20 11:02:55,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:02:55,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:02:55,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1134 transitions. [2022-11-20 11:02:55,483 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8964426877470356 [2022-11-20 11:02:55,484 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1134 transitions. [2022-11-20 11:02:55,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1134 transitions. [2022-11-20 11:02:55,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:02:55,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1134 transitions. [2022-11-20 11:02:55,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 226.8) internal successors, (1134), 5 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:55,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:55,514 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:55,514 INFO L175 Difference]: Start difference. First operand has 236 places, 272 transitions, 865 flow. Second operand 5 states and 1134 transitions. [2022-11-20 11:02:55,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 289 transitions, 983 flow [2022-11-20 11:02:55,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 289 transitions, 981 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:02:55,523 INFO L231 Difference]: Finished difference. Result has 242 places, 274 transitions, 889 flow [2022-11-20 11:02:55,524 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=863, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=889, PETRI_PLACES=242, PETRI_TRANSITIONS=274} [2022-11-20 11:02:55,525 INFO L288 CegarLoopForPetriNet]: 220 programPoint places, 22 predicate places. [2022-11-20 11:02:55,525 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 274 transitions, 889 flow [2022-11-20 11:02:55,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 220.75) internal successors, (883), 4 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:55,526 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:02:55,526 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:02:55,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:02:55,528 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-20 11:02:55,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:02:55,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1057893233, now seen corresponding path program 1 times [2022-11-20 11:02:55,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:02:55,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539808434] [2022-11-20 11:02:55,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:55,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:02:55,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:55,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:02:55,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:02:55,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539808434] [2022-11-20 11:02:55,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539808434] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:02:55,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402914097] [2022-11-20 11:02:55,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:55,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:02:55,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:02:55,699 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:02:55,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:02:55,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:55,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:02:55,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:02:56,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:02:56,082 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:02:56,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402914097] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:02:56,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:02:56,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 10 [2022-11-20 11:02:56,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951459939] [2022-11-20 11:02:56,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:02:56,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:02:56,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:02:56,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:02:56,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:02:56,087 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 253 [2022-11-20 11:02:56,090 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 274 transitions, 889 flow. Second operand has 7 states, 7 states have (on average 187.0) internal successors, (1309), 7 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:56,090 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:02:56,090 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 253 [2022-11-20 11:02:56,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:02:59,878 INFO L130 PetriNetUnfolder]: 5745/15666 cut-off events. [2022-11-20 11:02:59,878 INFO L131 PetriNetUnfolder]: For 5529/5529 co-relation queries the response was YES. [2022-11-20 11:02:59,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30824 conditions, 15666 events. 5745/15666 cut-off events. For 5529/5529 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 162433 event pairs, 4622 based on Foata normal form. 0/12573 useless extension candidates. Maximal degree in co-relation 17756. Up to 7446 conditions per place. [2022-11-20 11:03:00,047 INFO L137 encePairwiseOnDemand]: 234/253 looper letters, 164 selfloop transitions, 43 changer transitions 0/378 dead transitions. [2022-11-20 11:03:00,047 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 378 transitions, 1660 flow [2022-11-20 11:03:00,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:03:00,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 11:03:00,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2149 transitions. [2022-11-20 11:03:00,055 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7721882860222781 [2022-11-20 11:03:00,055 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2149 transitions. [2022-11-20 11:03:00,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2149 transitions. [2022-11-20 11:03:00,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:03:00,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2149 transitions. [2022-11-20 11:03:00,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 195.36363636363637) internal successors, (2149), 11 states have internal predecessors, (2149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:00,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 253.0) internal successors, (3036), 12 states have internal predecessors, (3036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:00,071 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 253.0) internal successors, (3036), 12 states have internal predecessors, (3036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:00,071 INFO L175 Difference]: Start difference. First operand has 242 places, 274 transitions, 889 flow. Second operand 11 states and 2149 transitions. [2022-11-20 11:03:00,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 378 transitions, 1660 flow [2022-11-20 11:03:00,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 378 transitions, 1652 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:03:00,155 INFO L231 Difference]: Finished difference. Result has 253 places, 291 transitions, 1071 flow [2022-11-20 11:03:00,156 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=885, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1071, PETRI_PLACES=253, PETRI_TRANSITIONS=291} [2022-11-20 11:03:00,159 INFO L288 CegarLoopForPetriNet]: 220 programPoint places, 33 predicate places. [2022-11-20 11:03:00,160 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 291 transitions, 1071 flow [2022-11-20 11:03:00,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 187.0) internal successors, (1309), 7 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:00,161 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:03:00,161 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:03:00,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:03:00,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:03:00,368 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-20 11:03:00,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:00,369 INFO L85 PathProgramCache]: Analyzing trace with hash -249543994, now seen corresponding path program 1 times [2022-11-20 11:03:00,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:00,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089573712] [2022-11-20 11:03:00,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:00,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:00,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:00,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:00,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:00,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089573712] [2022-11-20 11:03:00,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089573712] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:00,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:00,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:03:00,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006792191] [2022-11-20 11:03:00,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:00,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:03:00,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:00,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:03:00,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:03:00,530 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 253 [2022-11-20 11:03:00,531 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 291 transitions, 1071 flow. Second operand has 4 states, 4 states have (on average 220.25) internal successors, (881), 4 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:00,532 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:03:00,532 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 253 [2022-11-20 11:03:00,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:03:03,704 INFO L130 PetriNetUnfolder]: 4373/13215 cut-off events. [2022-11-20 11:03:03,705 INFO L131 PetriNetUnfolder]: For 3651/4079 co-relation queries the response was YES. [2022-11-20 11:03:03,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24588 conditions, 13215 events. 4373/13215 cut-off events. For 3651/4079 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 147382 event pairs, 2096 based on Foata normal form. 378/11321 useless extension candidates. Maximal degree in co-relation 15646. Up to 4084 conditions per place. [2022-11-20 11:03:03,873 INFO L137 encePairwiseOnDemand]: 247/253 looper letters, 40 selfloop transitions, 4 changer transitions 0/315 dead transitions. [2022-11-20 11:03:03,873 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 315 transitions, 1225 flow [2022-11-20 11:03:03,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:03:03,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:03:03,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1136 transitions. [2022-11-20 11:03:03,877 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8980237154150198 [2022-11-20 11:03:03,878 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1136 transitions. [2022-11-20 11:03:03,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1136 transitions. [2022-11-20 11:03:03,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:03:03,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1136 transitions. [2022-11-20 11:03:03,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 227.2) internal successors, (1136), 5 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:03,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:03,886 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:03,887 INFO L175 Difference]: Start difference. First operand has 253 places, 291 transitions, 1071 flow. Second operand 5 states and 1136 transitions. [2022-11-20 11:03:03,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 315 transitions, 1225 flow [2022-11-20 11:03:03,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 315 transitions, 1220 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:03:03,922 INFO L231 Difference]: Finished difference. Result has 258 places, 294 transitions, 1096 flow [2022-11-20 11:03:03,923 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=1066, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1096, PETRI_PLACES=258, PETRI_TRANSITIONS=294} [2022-11-20 11:03:03,924 INFO L288 CegarLoopForPetriNet]: 220 programPoint places, 38 predicate places. [2022-11-20 11:03:03,924 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 294 transitions, 1096 flow [2022-11-20 11:03:03,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 220.25) internal successors, (881), 4 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:03,925 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:03:03,925 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:03:03,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:03:03,926 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-20 11:03:03,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:03,926 INFO L85 PathProgramCache]: Analyzing trace with hash -842355628, now seen corresponding path program 1 times [2022-11-20 11:03:03,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:03,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178272983] [2022-11-20 11:03:03,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:03,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:03,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:04,129 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:04,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:04,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178272983] [2022-11-20 11:03:04,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178272983] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:03:04,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540759252] [2022-11-20 11:03:04,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:04,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:03:04,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:03:04,132 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:03:04,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:03:04,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:04,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:03:04,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:03:04,616 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 11:03:04,617 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:03:04,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540759252] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:04,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:03:04,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-11-20 11:03:04,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167517314] [2022-11-20 11:03:04,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:04,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:03:04,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:04,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:03:04,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:03:04,622 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 253 [2022-11-20 11:03:04,624 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 294 transitions, 1096 flow. Second operand has 7 states, 7 states have (on average 184.85714285714286) internal successors, (1294), 7 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:04,624 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:03:04,624 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 253 [2022-11-20 11:03:04,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:03:13,564 INFO L130 PetriNetUnfolder]: 13235/35794 cut-off events. [2022-11-20 11:03:13,564 INFO L131 PetriNetUnfolder]: For 12092/12894 co-relation queries the response was YES. [2022-11-20 11:03:13,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74567 conditions, 35794 events. 13235/35794 cut-off events. For 12092/12894 co-relation queries the response was YES. Maximal size of possible extension queue 915. Compared 418571 event pairs, 12218 based on Foata normal form. 196/31696 useless extension candidates. Maximal degree in co-relation 46687. Up to 18948 conditions per place. [2022-11-20 11:03:14,021 INFO L137 encePairwiseOnDemand]: 234/253 looper letters, 158 selfloop transitions, 43 changer transitions 4/379 dead transitions. [2022-11-20 11:03:14,022 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 379 transitions, 1790 flow [2022-11-20 11:03:14,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:03:14,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 11:03:14,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2125 transitions. [2022-11-20 11:03:14,030 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7635644987423643 [2022-11-20 11:03:14,030 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2125 transitions. [2022-11-20 11:03:14,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2125 transitions. [2022-11-20 11:03:14,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:03:14,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2125 transitions. [2022-11-20 11:03:14,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 193.1818181818182) internal successors, (2125), 11 states have internal predecessors, (2125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:14,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 253.0) internal successors, (3036), 12 states have internal predecessors, (3036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:14,047 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 253.0) internal successors, (3036), 12 states have internal predecessors, (3036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:14,048 INFO L175 Difference]: Start difference. First operand has 258 places, 294 transitions, 1096 flow. Second operand 11 states and 2125 transitions. [2022-11-20 11:03:14,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 379 transitions, 1790 flow [2022-11-20 11:03:14,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 379 transitions, 1788 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:03:14,351 INFO L231 Difference]: Finished difference. Result has 269 places, 296 transitions, 1196 flow [2022-11-20 11:03:14,353 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=1094, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1196, PETRI_PLACES=269, PETRI_TRANSITIONS=296} [2022-11-20 11:03:14,354 INFO L288 CegarLoopForPetriNet]: 220 programPoint places, 49 predicate places. [2022-11-20 11:03:14,354 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 296 transitions, 1196 flow [2022-11-20 11:03:14,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 184.85714285714286) internal successors, (1294), 7 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:14,355 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:03:14,355 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:03:14,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:03:14,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 11:03:14,563 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-20 11:03:14,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:14,564 INFO L85 PathProgramCache]: Analyzing trace with hash 379987028, now seen corresponding path program 1 times [2022-11-20 11:03:14,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:14,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565554369] [2022-11-20 11:03:14,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:14,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:14,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:14,795 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:14,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:14,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565554369] [2022-11-20 11:03:14,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565554369] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:03:14,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642367001] [2022-11-20 11:03:14,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:14,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:03:14,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:03:14,799 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:03:14,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 11:03:14,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:14,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:03:14,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:03:15,248 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:03:15,249 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:03:15,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642367001] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:15,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:03:15,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-11-20 11:03:15,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297133307] [2022-11-20 11:03:15,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:15,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:03:15,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:15,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:03:15,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:03:15,259 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 253 [2022-11-20 11:03:15,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 296 transitions, 1196 flow. Second operand has 7 states, 7 states have (on average 186.14285714285714) internal successors, (1303), 7 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:15,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:03:15,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 253 [2022-11-20 11:03:15,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:03:21,660 INFO L130 PetriNetUnfolder]: 11068/25168 cut-off events. [2022-11-20 11:03:21,660 INFO L131 PetriNetUnfolder]: For 14637/14763 co-relation queries the response was YES. [2022-11-20 11:03:21,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54977 conditions, 25168 events. 11068/25168 cut-off events. For 14637/14763 co-relation queries the response was YES. Maximal size of possible extension queue 899. Compared 266914 event pairs, 9712 based on Foata normal form. 126/22194 useless extension candidates. Maximal degree in co-relation 31287. Up to 15696 conditions per place. [2022-11-20 11:03:22,021 INFO L137 encePairwiseOnDemand]: 234/253 looper letters, 84 selfloop transitions, 24 changer transitions 92/373 dead transitions. [2022-11-20 11:03:22,021 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 373 transitions, 1854 flow [2022-11-20 11:03:22,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:03:22,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 11:03:22,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2127 transitions. [2022-11-20 11:03:22,032 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7642831476823572 [2022-11-20 11:03:22,032 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2127 transitions. [2022-11-20 11:03:22,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2127 transitions. [2022-11-20 11:03:22,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:03:22,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2127 transitions. [2022-11-20 11:03:22,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 193.36363636363637) internal successors, (2127), 11 states have internal predecessors, (2127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:22,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 253.0) internal successors, (3036), 12 states have internal predecessors, (3036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:22,051 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 253.0) internal successors, (3036), 12 states have internal predecessors, (3036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:22,052 INFO L175 Difference]: Start difference. First operand has 269 places, 296 transitions, 1196 flow. Second operand 11 states and 2127 transitions. [2022-11-20 11:03:22,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 373 transitions, 1854 flow [2022-11-20 11:03:22,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 373 transitions, 1814 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 11:03:22,215 INFO L231 Difference]: Finished difference. Result has 278 places, 275 transitions, 1047 flow [2022-11-20 11:03:22,216 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=1156, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1047, PETRI_PLACES=278, PETRI_TRANSITIONS=275} [2022-11-20 11:03:22,216 INFO L288 CegarLoopForPetriNet]: 220 programPoint places, 58 predicate places. [2022-11-20 11:03:22,217 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 275 transitions, 1047 flow [2022-11-20 11:03:22,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 186.14285714285714) internal successors, (1303), 7 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:22,217 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:03:22,218 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:03:22,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 11:03:22,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 11:03:22,426 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-20 11:03:22,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:22,427 INFO L85 PathProgramCache]: Analyzing trace with hash -890949700, now seen corresponding path program 1 times [2022-11-20 11:03:22,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:22,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902479183] [2022-11-20 11:03:22,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:22,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:22,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:22,624 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:03:22,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:22,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902479183] [2022-11-20 11:03:22,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902479183] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:03:22,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492106518] [2022-11-20 11:03:22,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:22,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:03:22,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:03:22,627 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:03:22,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 11:03:22,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:22,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:03:22,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:03:22,849 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:03:22,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:03:22,898 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:03:22,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492106518] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:03:22,898 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:03:22,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2022-11-20 11:03:22,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81371958] [2022-11-20 11:03:22,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:03:22,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:03:22,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:22,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:03:22,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:03:22,907 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 253 [2022-11-20 11:03:22,910 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 275 transitions, 1047 flow. Second operand has 10 states, 10 states have (on average 221.9) internal successors, (2219), 10 states have internal predecessors, (2219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:22,910 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:03:22,911 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 253 [2022-11-20 11:03:22,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:03:25,173 INFO L130 PetriNetUnfolder]: 2857/6834 cut-off events. [2022-11-20 11:03:25,173 INFO L131 PetriNetUnfolder]: For 2397/2475 co-relation queries the response was YES. [2022-11-20 11:03:25,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14505 conditions, 6834 events. 2857/6834 cut-off events. For 2397/2475 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 68014 event pairs, 438 based on Foata normal form. 78/6084 useless extension candidates. Maximal degree in co-relation 13992. Up to 1284 conditions per place. [2022-11-20 11:03:25,278 INFO L137 encePairwiseOnDemand]: 244/253 looper letters, 60 selfloop transitions, 14 changer transitions 0/327 dead transitions. [2022-11-20 11:03:25,279 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 327 transitions, 1356 flow [2022-11-20 11:03:25,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 11:03:25,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-20 11:03:25,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2705 transitions. [2022-11-20 11:03:25,284 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8909749670619236 [2022-11-20 11:03:25,285 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2705 transitions. [2022-11-20 11:03:25,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2705 transitions. [2022-11-20 11:03:25,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:03:25,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2705 transitions. [2022-11-20 11:03:25,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 225.41666666666666) internal successors, (2705), 12 states have internal predecessors, (2705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:25,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 253.0) internal successors, (3289), 13 states have internal predecessors, (3289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:25,299 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 253.0) internal successors, (3289), 13 states have internal predecessors, (3289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:25,299 INFO L175 Difference]: Start difference. First operand has 278 places, 275 transitions, 1047 flow. Second operand 12 states and 2705 transitions. [2022-11-20 11:03:25,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 327 transitions, 1356 flow [2022-11-20 11:03:25,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 327 transitions, 1167 flow, removed 16 selfloop flow, removed 18 redundant places. [2022-11-20 11:03:25,318 INFO L231 Difference]: Finished difference. Result has 262 places, 282 transitions, 953 flow [2022-11-20 11:03:25,319 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=870, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=953, PETRI_PLACES=262, PETRI_TRANSITIONS=282} [2022-11-20 11:03:25,320 INFO L288 CegarLoopForPetriNet]: 220 programPoint places, 42 predicate places. [2022-11-20 11:03:25,320 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 282 transitions, 953 flow [2022-11-20 11:03:25,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 221.9) internal successors, (2219), 10 states have internal predecessors, (2219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:25,321 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:03:25,321 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:03:25,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 11:03:25,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:03:25,528 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-20 11:03:25,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:25,529 INFO L85 PathProgramCache]: Analyzing trace with hash -890949699, now seen corresponding path program 1 times [2022-11-20 11:03:25,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:25,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125070322] [2022-11-20 11:03:25,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:25,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:25,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:25,694 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:03:25,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:25,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125070322] [2022-11-20 11:03:25,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125070322] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:03:25,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722675216] [2022-11-20 11:03:25,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:25,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:03:25,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:03:25,699 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:03:25,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 11:03:25,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:25,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:03:25,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:03:25,901 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:03:25,901 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:03:25,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722675216] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:25,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:03:25,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-20 11:03:25,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481284367] [2022-11-20 11:03:25,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:25,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:03:25,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:25,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:03:25,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:03:25,905 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 253 [2022-11-20 11:03:25,906 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 282 transitions, 953 flow. Second operand has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:25,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:03:25,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 253 [2022-11-20 11:03:25,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:03:28,206 INFO L130 PetriNetUnfolder]: 2893/9942 cut-off events. [2022-11-20 11:03:28,206 INFO L131 PetriNetUnfolder]: For 4386/4476 co-relation queries the response was YES. [2022-11-20 11:03:28,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19345 conditions, 9942 events. 2893/9942 cut-off events. For 4386/4476 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 110308 event pairs, 1224 based on Foata normal form. 306/8658 useless extension candidates. Maximal degree in co-relation 12497. Up to 2508 conditions per place. [2022-11-20 11:03:28,313 INFO L137 encePairwiseOnDemand]: 248/253 looper letters, 23 selfloop transitions, 7 changer transitions 0/283 dead transitions. [2022-11-20 11:03:28,314 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 283 transitions, 996 flow [2022-11-20 11:03:28,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:03:28,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 11:03:28,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 901 transitions. [2022-11-20 11:03:28,320 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8903162055335968 [2022-11-20 11:03:28,320 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 901 transitions. [2022-11-20 11:03:28,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 901 transitions. [2022-11-20 11:03:28,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:03:28,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 901 transitions. [2022-11-20 11:03:28,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 225.25) internal successors, (901), 4 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:28,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 253.0) internal successors, (1265), 5 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:28,334 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 253.0) internal successors, (1265), 5 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:28,334 INFO L175 Difference]: Start difference. First operand has 262 places, 282 transitions, 953 flow. Second operand 4 states and 901 transitions. [2022-11-20 11:03:28,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 283 transitions, 996 flow [2022-11-20 11:03:28,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 283 transitions, 982 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-11-20 11:03:28,377 INFO L231 Difference]: Finished difference. Result has 257 places, 277 transitions, 918 flow [2022-11-20 11:03:28,377 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=904, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=918, PETRI_PLACES=257, PETRI_TRANSITIONS=277} [2022-11-20 11:03:28,379 INFO L288 CegarLoopForPetriNet]: 220 programPoint places, 37 predicate places. [2022-11-20 11:03:28,380 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 277 transitions, 918 flow [2022-11-20 11:03:28,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:28,380 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:03:28,381 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:03:28,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-20 11:03:28,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:03:28,588 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-20 11:03:28,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:28,589 INFO L85 PathProgramCache]: Analyzing trace with hash 2030449089, now seen corresponding path program 1 times [2022-11-20 11:03:28,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:28,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039771859] [2022-11-20 11:03:28,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:28,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:28,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:28,796 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:03:28,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:28,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039771859] [2022-11-20 11:03:28,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039771859] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:03:28,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991911956] [2022-11-20 11:03:28,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:28,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:03:28,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:03:28,799 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:03:28,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8e1a95-b1f5-491f-9211-6f034d157d46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 11:03:28,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:28,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 11:03:28,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:03:29,435 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:03:29,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:03:29,977 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:03:29,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991911956] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:03:29,977 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:03:29,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 23 [2022-11-20 11:03:29,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471025763] [2022-11-20 11:03:29,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:03:29,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 11:03:29,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:29,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 11:03:29,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-11-20 11:03:29,986 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 253 [2022-11-20 11:03:29,990 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 277 transitions, 918 flow. Second operand has 23 states, 23 states have (on average 166.3913043478261) internal successors, (3827), 23 states have internal predecessors, (3827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:29,990 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:03:29,991 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 253 [2022-11-20 11:03:29,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand