./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b 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_769d5835-a645-46e5-997a-302d919d4173/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769d5835-a645-46e5-997a-302d919d4173/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769d5835-a645-46e5-997a-302d919d4173/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769d5835-a645-46e5-997a-302d919d4173/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769d5835-a645-46e5-997a-302d919d4173/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769d5835-a645-46e5-997a-302d919d4173/bin/uautomizer-TMbwUNV5ro --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 a1648913be4b4e88120f8ece4966a58804b334c451c87254dfc42f8e396f396f --- 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-8393723 [2022-11-18 20:34:25,072 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:34:25,074 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:34:25,096 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:34:25,097 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:34:25,098 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:34:25,100 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:34:25,102 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:34:25,104 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:34:25,105 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:34:25,107 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:34:25,108 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:34:25,108 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:34:25,110 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:34:25,111 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:34:25,113 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:34:25,114 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:34:25,115 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:34:25,117 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:34:25,120 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:34:25,121 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:34:25,123 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:34:25,125 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:34:25,126 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:34:25,130 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:34:25,131 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:34:25,131 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:34:25,133 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:34:25,133 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:34:25,134 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:34:25,135 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:34:25,136 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:34:25,137 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:34:25,138 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:34:25,139 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:34:25,139 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:34:25,140 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:34:25,141 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:34:25,141 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:34:25,142 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:34:25,143 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:34:25,149 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769d5835-a645-46e5-997a-302d919d4173/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 20:34:25,190 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:34:25,190 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:34:25,191 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:34:25,191 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:34:25,192 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:34:25,193 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:34:25,193 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:34:25,194 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:34:25,194 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:34:25,194 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:34:25,195 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:34:25,195 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:34:25,196 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:34:25,196 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:34:25,196 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:34:25,196 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:34:25,196 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:34:25,197 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:34:25,197 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 20:34:25,197 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:34:25,197 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:34:25,197 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:34:25,198 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:34:25,198 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:34:25,198 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:34:25,198 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:34:25,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:34:25,199 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:34:25,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:34:25,199 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:34:25,199 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:34:25,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:34:25,200 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:34:25,200 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:34:25,200 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:34:25,201 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_769d5835-a645-46e5-997a-302d919d4173/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769d5835-a645-46e5-997a-302d919d4173/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a1648913be4b4e88120f8ece4966a58804b334c451c87254dfc42f8e396f396f [2022-11-18 20:34:25,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:34:25,533 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:34:25,537 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:34:25,539 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:34:25,541 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:34:25,542 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769d5835-a645-46e5-997a-302d919d4173/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2022-11-18 20:34:25,623 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769d5835-a645-46e5-997a-302d919d4173/bin/uautomizer-TMbwUNV5ro/data/3ae480c99/c63b139e0d6f4edbb6c5ef58127d4c35/FLAG46b60b235 [2022-11-18 20:34:26,143 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:34:26,144 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769d5835-a645-46e5-997a-302d919d4173/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2022-11-18 20:34:26,156 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769d5835-a645-46e5-997a-302d919d4173/bin/uautomizer-TMbwUNV5ro/data/3ae480c99/c63b139e0d6f4edbb6c5ef58127d4c35/FLAG46b60b235 [2022-11-18 20:34:26,483 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769d5835-a645-46e5-997a-302d919d4173/bin/uautomizer-TMbwUNV5ro/data/3ae480c99/c63b139e0d6f4edbb6c5ef58127d4c35 [2022-11-18 20:34:26,490 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:34:26,492 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:34:26,499 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:34:26,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:34:26,504 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:34:26,505 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:34:26" (1/1) ... [2022-11-18 20:34:26,508 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16bdf88a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:26, skipping insertion in model container [2022-11-18 20:34:26,509 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:34:26" (1/1) ... [2022-11-18 20:34:26,519 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:34:26,541 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:34:26,783 WARN L234 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_769d5835-a645-46e5-997a-302d919d4173/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c[3271,3284] [2022-11-18 20:34:26,788 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:34:26,797 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:34:26,825 WARN L234 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_769d5835-a645-46e5-997a-302d919d4173/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c[3271,3284] [2022-11-18 20:34:26,828 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:34:26,842 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:34:26,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:26 WrapperNode [2022-11-18 20:34:26,843 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:34:26,844 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:34:26,844 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:34:26,844 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:34:26,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:26" (1/1) ... [2022-11-18 20:34:26,861 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:26" (1/1) ... [2022-11-18 20:34:26,898 INFO L138 Inliner]: procedures = 27, calls = 75, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 184 [2022-11-18 20:34:26,902 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:34:26,903 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:34:26,903 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:34:26,903 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:34:26,913 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:26" (1/1) ... [2022-11-18 20:34:26,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:26" (1/1) ... [2022-11-18 20:34:26,933 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:26" (1/1) ... [2022-11-18 20:34:26,939 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:26" (1/1) ... [2022-11-18 20:34:26,947 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:26" (1/1) ... [2022-11-18 20:34:26,967 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:26" (1/1) ... [2022-11-18 20:34:26,969 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:26" (1/1) ... [2022-11-18 20:34:26,970 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:26" (1/1) ... [2022-11-18 20:34:26,974 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:34:26,975 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:34:26,975 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:34:26,975 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:34:26,991 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:26" (1/1) ... [2022-11-18 20:34:27,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:34:27,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769d5835-a645-46e5-997a-302d919d4173/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:34:27,029 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769d5835-a645-46e5-997a-302d919d4173/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:34:27,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769d5835-a645-46e5-997a-302d919d4173/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:34:27,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:34:27,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:34:27,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:34:27,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:34:27,092 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 20:34:27,094 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 20:34:27,095 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 20:34:27,095 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 20:34:27,095 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 20:34:27,095 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 20:34:27,095 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-18 20:34:27,097 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-18 20:34:27,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:34:27,097 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-11-18 20:34:27,097 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-11-18 20:34:27,098 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 20:34:27,098 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 20:34:27,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:34:27,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:34:27,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:34:27,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:34:27,100 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:34:27,237 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:34:27,253 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:34:27,800 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:34:27,918 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:34:27,919 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-18 20:34:27,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:34:27 BoogieIcfgContainer [2022-11-18 20:34:27,932 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:34:27,935 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:34:27,937 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:34:27,941 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:34:27,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:34:26" (1/3) ... [2022-11-18 20:34:27,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d119e96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:34:27, skipping insertion in model container [2022-11-18 20:34:27,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:26" (2/3) ... [2022-11-18 20:34:27,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d119e96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:34:27, skipping insertion in model container [2022-11-18 20:34:27,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:34:27" (3/3) ... [2022-11-18 20:34:27,943 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-inc-dec.wvr.c [2022-11-18 20:34:27,956 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:34:27,965 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:34:27,966 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-18 20:34:27,966 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:34:28,144 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-11-18 20:34:28,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 222 places, 220 transitions, 480 flow [2022-11-18 20:34:28,278 INFO L130 PetriNetUnfolder]: 14/215 cut-off events. [2022-11-18 20:34:28,279 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-18 20:34:28,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 215 events. 14/215 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 236 event pairs, 0 based on Foata normal form. 0/185 useless extension candidates. Maximal degree in co-relation 177. Up to 2 conditions per place. [2022-11-18 20:34:28,288 INFO L82 GeneralOperation]: Start removeDead. Operand has 222 places, 220 transitions, 480 flow [2022-11-18 20:34:28,295 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 193 places, 190 transitions, 407 flow [2022-11-18 20:34:28,318 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:34:28,326 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;@634f046b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:34:28,326 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2022-11-18 20:34:28,348 INFO L130 PetriNetUnfolder]: 4/72 cut-off events. [2022-11-18 20:34:28,348 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:34:28,348 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:34:28,349 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] [2022-11-18 20:34:28,350 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-18 20:34:28,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:28,356 INFO L85 PathProgramCache]: Analyzing trace with hash 760177525, now seen corresponding path program 1 times [2022-11-18 20:34:28,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:28,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703401141] [2022-11-18 20:34:28,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:28,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:28,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:28,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:34:28,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:28,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703401141] [2022-11-18 20:34:28,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703401141] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:34:28,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:34:28,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:34:28,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109489830] [2022-11-18 20:34:28,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:34:28,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:34:28,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:28,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:34:28,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:34:28,873 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 220 [2022-11-18 20:34:28,879 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 190 transitions, 407 flow. Second operand has 4 states, 4 states have (on average 176.5) internal successors, (706), 4 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:28,879 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:34:28,879 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 220 [2022-11-18 20:34:28,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:34:31,539 INFO L130 PetriNetUnfolder]: 3425/7651 cut-off events. [2022-11-18 20:34:31,539 INFO L131 PetriNetUnfolder]: For 1034/1034 co-relation queries the response was YES. [2022-11-18 20:34:31,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12744 conditions, 7651 events. 3425/7651 cut-off events. For 1034/1034 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 65161 event pairs, 2272 based on Foata normal form. 1256/6236 useless extension candidates. Maximal degree in co-relation 6021. Up to 2172 conditions per place. [2022-11-18 20:34:31,715 INFO L137 encePairwiseOnDemand]: 203/220 looper letters, 54 selfloop transitions, 4 changer transitions 3/206 dead transitions. [2022-11-18 20:34:31,716 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 206 transitions, 582 flow [2022-11-18 20:34:31,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:34:31,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:34:31,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 954 transitions. [2022-11-18 20:34:31,742 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8672727272727273 [2022-11-18 20:34:31,744 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 954 transitions. [2022-11-18 20:34:31,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 954 transitions. [2022-11-18 20:34:31,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:34:31,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 954 transitions. [2022-11-18 20:34:31,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 190.8) internal successors, (954), 5 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:31,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 220.0) internal successors, (1320), 6 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:31,771 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 220.0) internal successors, (1320), 6 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:31,773 INFO L175 Difference]: Start difference. First operand has 193 places, 190 transitions, 407 flow. Second operand 5 states and 954 transitions. [2022-11-18 20:34:31,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 206 transitions, 582 flow [2022-11-18 20:34:31,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 206 transitions, 548 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-18 20:34:31,792 INFO L231 Difference]: Finished difference. Result has 188 places, 179 transitions, 392 flow [2022-11-18 20:34:31,794 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=392, PETRI_PLACES=188, PETRI_TRANSITIONS=179} [2022-11-18 20:34:31,800 INFO L288 CegarLoopForPetriNet]: 193 programPoint places, -5 predicate places. [2022-11-18 20:34:31,801 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 179 transitions, 392 flow [2022-11-18 20:34:31,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 176.5) internal successors, (706), 4 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:31,802 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:34:31,802 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] [2022-11-18 20:34:31,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:34:31,803 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-18 20:34:31,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:31,804 INFO L85 PathProgramCache]: Analyzing trace with hash -115519194, now seen corresponding path program 1 times [2022-11-18 20:34:31,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:31,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087513062] [2022-11-18 20:34:31,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:31,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:31,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:32,191 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:34:32,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:32,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087513062] [2022-11-18 20:34:32,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087513062] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:34:32,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000061650] [2022-11-18 20:34:32,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:32,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:34:32,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769d5835-a645-46e5-997a-302d919d4173/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:34:32,202 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769d5835-a645-46e5-997a-302d919d4173/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:34:32,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769d5835-a645-46e5-997a-302d919d4173/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:34:32,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:32,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:34:32,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:34:32,453 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:34:32,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:34:32,553 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:34:32,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000061650] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:34:32,554 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:34:32,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 20:34:32,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190067593] [2022-11-18 20:34:32,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:34:32,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:34:32,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:32,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:34:32,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:34:32,564 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 220 [2022-11-18 20:34:32,568 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 179 transitions, 392 flow. Second operand has 12 states, 12 states have (on average 177.66666666666666) internal successors, (2132), 12 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:32,568 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:34:32,568 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 220 [2022-11-18 20:34:32,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:34:37,100 INFO L130 PetriNetUnfolder]: 8561/19038 cut-off events. [2022-11-18 20:34:37,101 INFO L131 PetriNetUnfolder]: For 671/671 co-relation queries the response was YES. [2022-11-18 20:34:37,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30918 conditions, 19038 events. 8561/19038 cut-off events. For 671/671 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 179026 event pairs, 5680 based on Foata normal form. 3/12391 useless extension candidates. Maximal degree in co-relation 24684. Up to 2167 conditions per place. [2022-11-18 20:34:37,407 INFO L137 encePairwiseOnDemand]: 213/220 looper letters, 123 selfloop transitions, 18 changer transitions 0/286 dead transitions. [2022-11-18 20:34:37,408 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 286 transitions, 950 flow [2022-11-18 20:34:37,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 20:34:37,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 20:34:37,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3294 transitions. [2022-11-18 20:34:37,416 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8318181818181818 [2022-11-18 20:34:37,416 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3294 transitions. [2022-11-18 20:34:37,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3294 transitions. [2022-11-18 20:34:37,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:34:37,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3294 transitions. [2022-11-18 20:34:37,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 183.0) internal successors, (3294), 18 states have internal predecessors, (3294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:37,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 220.0) internal successors, (4180), 19 states have internal predecessors, (4180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:37,439 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 220.0) internal successors, (4180), 19 states have internal predecessors, (4180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:37,439 INFO L175 Difference]: Start difference. First operand has 188 places, 179 transitions, 392 flow. Second operand 18 states and 3294 transitions. [2022-11-18 20:34:37,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 286 transitions, 950 flow [2022-11-18 20:34:37,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 286 transitions, 948 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:34:37,447 INFO L231 Difference]: Finished difference. Result has 205 places, 191 transitions, 496 flow [2022-11-18 20:34:37,447 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=496, PETRI_PLACES=205, PETRI_TRANSITIONS=191} [2022-11-18 20:34:37,448 INFO L288 CegarLoopForPetriNet]: 193 programPoint places, 12 predicate places. [2022-11-18 20:34:37,449 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 191 transitions, 496 flow [2022-11-18 20:34:37,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 177.66666666666666) internal successors, (2132), 12 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:37,450 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:34:37,451 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:37,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769d5835-a645-46e5-997a-302d919d4173/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:34:37,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769d5835-a645-46e5-997a-302d919d4173/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:34:37,658 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-18 20:34:37,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:37,659 INFO L85 PathProgramCache]: Analyzing trace with hash 713872770, now seen corresponding path program 1 times [2022-11-18 20:34:37,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:37,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490945466] [2022-11-18 20:34:37,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:37,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:37,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:37,886 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:34:37,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:37,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490945466] [2022-11-18 20:34:37,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490945466] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:34:37,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647973003] [2022-11-18 20:34:37,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:37,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:34:37,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769d5835-a645-46e5-997a-302d919d4173/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:34:37,890 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769d5835-a645-46e5-997a-302d919d4173/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:34:37,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769d5835-a645-46e5-997a-302d919d4173/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:34:38,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:38,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:34:38,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:34:38,083 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:34:38,083 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:34:38,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647973003] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:34:38,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:34:38,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 20:34:38,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438229740] [2022-11-18 20:34:38,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:34:38,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:34:38,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:38,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:34:38,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:34:38,088 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 220 [2022-11-18 20:34:38,089 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 191 transitions, 496 flow. Second operand has 6 states, 6 states have (on average 177.33333333333334) internal successors, (1064), 6 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:38,089 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:34:38,090 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 220 [2022-11-18 20:34:38,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:34:41,595 INFO L130 PetriNetUnfolder]: 8561/19034 cut-off events. [2022-11-18 20:34:41,595 INFO L131 PetriNetUnfolder]: For 707/707 co-relation queries the response was YES. [2022-11-18 20:34:41,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30936 conditions, 19034 events. 8561/19034 cut-off events. For 707/707 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 179093 event pairs, 5680 based on Foata normal form. 4/12376 useless extension candidates. Maximal degree in co-relation 24734. Up to 8652 conditions per place. [2022-11-18 20:34:41,849 INFO L137 encePairwiseOnDemand]: 215/220 looper letters, 55 selfloop transitions, 11 changer transitions 0/211 dead transitions. [2022-11-18 20:34:41,849 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 211 transitions, 661 flow [2022-11-18 20:34:41,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:34:41,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:34:41,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1283 transitions. [2022-11-18 20:34:41,853 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8331168831168831 [2022-11-18 20:34:41,853 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1283 transitions. [2022-11-18 20:34:41,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1283 transitions. [2022-11-18 20:34:41,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:34:41,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1283 transitions. [2022-11-18 20:34:41,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 183.28571428571428) internal successors, (1283), 7 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:41,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 220.0) internal successors, (1760), 8 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:41,861 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 220.0) internal successors, (1760), 8 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:41,862 INFO L175 Difference]: Start difference. First operand has 205 places, 191 transitions, 496 flow. Second operand 7 states and 1283 transitions. [2022-11-18 20:34:41,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 211 transitions, 661 flow [2022-11-18 20:34:41,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 211 transitions, 629 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-18 20:34:41,868 INFO L231 Difference]: Finished difference. Result has 201 places, 187 transitions, 459 flow [2022-11-18 20:34:41,868 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=459, PETRI_PLACES=201, PETRI_TRANSITIONS=187} [2022-11-18 20:34:41,869 INFO L288 CegarLoopForPetriNet]: 193 programPoint places, 8 predicate places. [2022-11-18 20:34:41,870 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 187 transitions, 459 flow [2022-11-18 20:34:41,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 177.33333333333334) internal successors, (1064), 6 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:41,871 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:34:41,871 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] [2022-11-18 20:34:41,883 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769d5835-a645-46e5-997a-302d919d4173/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-18 20:34:42,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769d5835-a645-46e5-997a-302d919d4173/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:34:42,077 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-18 20:34:42,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:42,077 INFO L85 PathProgramCache]: Analyzing trace with hash 817320455, now seen corresponding path program 1 times [2022-11-18 20:34:42,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:42,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834678510] [2022-11-18 20:34:42,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:42,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:42,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:42,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:34:42,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:42,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834678510] [2022-11-18 20:34:42,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834678510] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:34:42,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:34:42,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:34:42,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422020684] [2022-11-18 20:34:42,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:34:42,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:34:42,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:42,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:34:42,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:34:42,410 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 220 [2022-11-18 20:34:42,412 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 187 transitions, 459 flow. Second operand has 4 states, 4 states have (on average 178.75) internal successors, (715), 4 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:42,413 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:34:42,413 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 220 [2022-11-18 20:34:42,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:34:57,274 INFO L130 PetriNetUnfolder]: 49856/93909 cut-off events. [2022-11-18 20:34:57,274 INFO L131 PetriNetUnfolder]: For 1342/1447 co-relation queries the response was YES. [2022-11-18 20:34:58,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163428 conditions, 93909 events. 49856/93909 cut-off events. For 1342/1447 co-relation queries the response was YES. Maximal size of possible extension queue 2001. Compared 963725 event pairs, 26915 based on Foata normal form. 5/59554 useless extension candidates. Maximal degree in co-relation 130734. Up to 37096 conditions per place. [2022-11-18 20:34:58,725 INFO L137 encePairwiseOnDemand]: 214/220 looper letters, 73 selfloop transitions, 4 changer transitions 0/235 dead transitions. [2022-11-18 20:34:58,726 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 235 transitions, 728 flow [2022-11-18 20:34:58,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:34:58,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:34:58,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 964 transitions. [2022-11-18 20:34:58,729 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8763636363636363 [2022-11-18 20:34:58,729 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 964 transitions. [2022-11-18 20:34:58,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 964 transitions. [2022-11-18 20:34:58,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:34:58,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 964 transitions. [2022-11-18 20:34:58,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 192.8) internal successors, (964), 5 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:58,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 220.0) internal successors, (1320), 6 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:58,738 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 220.0) internal successors, (1320), 6 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:58,739 INFO L175 Difference]: Start difference. First operand has 201 places, 187 transitions, 459 flow. Second operand 5 states and 964 transitions. [2022-11-18 20:34:58,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 235 transitions, 728 flow [2022-11-18 20:34:58,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 235 transitions, 714 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:34:58,745 INFO L231 Difference]: Finished difference. Result has 203 places, 190 transitions, 475 flow [2022-11-18 20:34:58,745 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=475, PETRI_PLACES=203, PETRI_TRANSITIONS=190} [2022-11-18 20:34:58,746 INFO L288 CegarLoopForPetriNet]: 193 programPoint places, 10 predicate places. [2022-11-18 20:34:58,746 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 190 transitions, 475 flow [2022-11-18 20:34:58,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 178.75) internal successors, (715), 4 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:58,747 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:34:58,747 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] [2022-11-18 20:34:58,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:34:58,748 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-18 20:34:58,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:58,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1883594915, now seen corresponding path program 1 times [2022-11-18 20:34:58,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:58,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811383238] [2022-11-18 20:34:58,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:58,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:58,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:58,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:34:58,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:58,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811383238] [2022-11-18 20:34:58,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811383238] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:34:58,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:34:58,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:34:58,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269792393] [2022-11-18 20:34:58,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:34:58,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:34:58,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:58,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:34:58,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:34:58,872 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 220 [2022-11-18 20:34:58,875 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 190 transitions, 475 flow. Second operand has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:58,875 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:34:58,875 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 220 [2022-11-18 20:34:58,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand