./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-prod-cons3.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_236b4558-38ba-406c-9be3-3f15e46f3acc/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236b4558-38ba-406c-9be3-3f15e46f3acc/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_236b4558-38ba-406c-9be3-3f15e46f3acc/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236b4558-38ba-406c-9be3-3f15e46f3acc/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236b4558-38ba-406c-9be3-3f15e46f3acc/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_236b4558-38ba-406c-9be3-3f15e46f3acc/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 841ea5a5ca051cc33dfe29d877ccdea4b63526a0ee61a2de18869a9ba1858c4b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 10:53:12,655 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:53:12,657 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:53:12,684 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:53:12,684 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:53:12,689 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:53:12,695 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:53:12,699 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:53:12,701 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:53:12,709 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:53:12,710 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:53:12,710 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:53:12,711 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:53:12,712 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:53:12,713 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:53:12,714 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:53:12,715 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:53:12,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:53:12,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:53:12,719 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:53:12,721 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:53:12,728 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:53:12,730 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:53:12,731 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:53:12,744 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:53:12,744 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:53:12,745 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:53:12,747 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:53:12,747 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:53:12,748 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:53:12,749 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:53:12,750 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:53:12,752 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:53:12,753 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:53:12,754 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:53:12,754 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:53:12,755 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:53:12,755 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:53:12,756 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:53:12,757 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:53:12,758 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:53:12,759 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236b4558-38ba-406c-9be3-3f15e46f3acc/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 10:53:12,800 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:53:12,800 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:53:12,801 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:53:12,801 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:53:12,802 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:53:12,802 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:53:12,805 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:53:12,805 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:53:12,806 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:53:12,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:53:12,807 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:53:12,807 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:53:12,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:53:12,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:53:12,808 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:53:12,808 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:53:12,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:53:12,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:53:12,808 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 10:53:12,808 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:53:12,809 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:53:12,809 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:53:12,809 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:53:12,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:53:12,809 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:53:12,810 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:53:12,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:53:12,810 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:53:12,811 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:53:12,811 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:53:12,811 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:53:12,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:53:12,812 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:53:12,812 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:53:12,812 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:53:12,812 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_236b4558-38ba-406c-9be3-3f15e46f3acc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236b4558-38ba-406c-9be3-3f15e46f3acc/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 841ea5a5ca051cc33dfe29d877ccdea4b63526a0ee61a2de18869a9ba1858c4b [2022-11-20 10:53:13,114 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:53:13,149 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:53:13,152 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:53:13,153 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:53:13,154 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:53:13,155 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236b4558-38ba-406c-9be3-3f15e46f3acc/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c [2022-11-20 10:53:16,372 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:53:16,668 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:53:16,669 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236b4558-38ba-406c-9be3-3f15e46f3acc/sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c [2022-11-20 10:53:16,679 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236b4558-38ba-406c-9be3-3f15e46f3acc/bin/uautomizer-ug76WZFUDN/data/b3e1af717/1456ba123b9d41ecb108ce428b8d0f66/FLAG1f3f35017 [2022-11-20 10:53:16,699 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236b4558-38ba-406c-9be3-3f15e46f3acc/bin/uautomizer-ug76WZFUDN/data/b3e1af717/1456ba123b9d41ecb108ce428b8d0f66 [2022-11-20 10:53:16,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:53:16,703 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:53:16,705 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:53:16,706 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:53:16,709 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:53:16,710 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:53:16" (1/1) ... [2022-11-20 10:53:16,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@596b8735 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:53:16, skipping insertion in model container [2022-11-20 10:53:16,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:53:16" (1/1) ... [2022-11-20 10:53:16,721 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:53:16,759 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:53:17,025 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_236b4558-38ba-406c-9be3-3f15e46f3acc/sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c[4007,4020] [2022-11-20 10:53:17,040 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:53:17,055 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:53:17,099 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_236b4558-38ba-406c-9be3-3f15e46f3acc/sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c[4007,4020] [2022-11-20 10:53:17,102 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:53:17,118 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:53:17,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:53:17 WrapperNode [2022-11-20 10:53:17,118 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:53:17,120 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:53:17,120 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:53:17,120 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:53:17,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:53:17" (1/1) ... [2022-11-20 10:53:17,148 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:53:17" (1/1) ... [2022-11-20 10:53:17,197 INFO L138 Inliner]: procedures = 26, calls = 73, calls flagged for inlining = 15, calls inlined = 17, statements flattened = 287 [2022-11-20 10:53:17,198 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:53:17,200 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:53:17,200 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:53:17,200 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:53:17,210 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:53:17" (1/1) ... [2022-11-20 10:53:17,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:53:17" (1/1) ... [2022-11-20 10:53:17,223 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:53:17" (1/1) ... [2022-11-20 10:53:17,228 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:53:17" (1/1) ... [2022-11-20 10:53:17,238 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:53:17" (1/1) ... [2022-11-20 10:53:17,258 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:53:17" (1/1) ... [2022-11-20 10:53:17,259 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:53:17" (1/1) ... [2022-11-20 10:53:17,261 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:53:17" (1/1) ... [2022-11-20 10:53:17,264 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:53:17,273 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:53:17,274 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:53:17,274 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:53:17,275 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:53:17" (1/1) ... [2022-11-20 10:53:17,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:53:17,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236b4558-38ba-406c-9be3-3f15e46f3acc/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:53:17,306 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236b4558-38ba-406c-9be3-3f15e46f3acc/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:53:17,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236b4558-38ba-406c-9be3-3f15e46f3acc/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:53:17,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:53:17,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:53:17,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:53:17,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:53:17,350 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 10:53:17,350 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 10:53:17,350 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 10:53:17,351 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 10:53:17,351 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 10:53:17,351 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 10:53:17,351 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-20 10:53:17,351 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-20 10:53:17,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:53:17,352 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 10:53:17,352 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 10:53:17,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 10:53:17,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:53:17,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:53:17,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:53:17,354 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 10:53:17,509 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:53:17,512 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:53:18,100 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:53:18,346 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:53:18,346 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-20 10:53:18,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:53:18 BoogieIcfgContainer [2022-11-20 10:53:18,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:53:18,354 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:53:18,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:53:18,358 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:53:18,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:53:16" (1/3) ... [2022-11-20 10:53:18,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8d4ce54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:53:18, skipping insertion in model container [2022-11-20 10:53:18,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:53:17" (2/3) ... [2022-11-20 10:53:18,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8d4ce54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:53:18, skipping insertion in model container [2022-11-20 10:53:18,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:53:18" (3/3) ... [2022-11-20 10:53:18,367 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons3.wvr.c [2022-11-20 10:53:18,377 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 10:53:18,389 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:53:18,390 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2022-11-20 10:53:18,390 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 10:53:18,545 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-20 10:53:18,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 266 transitions, 564 flow [2022-11-20 10:53:18,754 INFO L130 PetriNetUnfolder]: 18/262 cut-off events. [2022-11-20 10:53:18,754 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-20 10:53:18,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279 conditions, 262 events. 18/262 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 225 event pairs, 0 based on Foata normal form. 0/222 useless extension candidates. Maximal degree in co-relation 227. Up to 3 conditions per place. [2022-11-20 10:53:18,767 INFO L82 GeneralOperation]: Start removeDead. Operand has 261 places, 266 transitions, 564 flow [2022-11-20 10:53:18,774 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 235 places, 239 transitions, 499 flow [2022-11-20 10:53:18,786 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:53:18,802 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;@3d3429fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:53:18,803 INFO L358 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2022-11-20 10:53:18,828 INFO L130 PetriNetUnfolder]: 4/91 cut-off events. [2022-11-20 10:53:18,828 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 10:53:18,829 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:53:18,829 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] [2022-11-20 10:53:18,830 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-20 10:53:18,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:53:18,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1561727479, now seen corresponding path program 1 times [2022-11-20 10:53:18,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:53:18,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505308556] [2022-11-20 10:53:18,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:18,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:53:19,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:19,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:53:19,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:53:19,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505308556] [2022-11-20 10:53:19,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505308556] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:53:19,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:53:19,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:53:19,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90706127] [2022-11-20 10:53:19,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:53:19,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:53:19,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:53:19,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:53:19,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:53:19,478 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 266 [2022-11-20 10:53:19,487 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 239 transitions, 499 flow. Second operand has 4 states, 4 states have (on average 202.5) internal successors, (810), 4 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:19,487 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:53:19,487 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 266 [2022-11-20 10:53:19,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:53:22,056 INFO L130 PetriNetUnfolder]: 4991/8535 cut-off events. [2022-11-20 10:53:22,057 INFO L131 PetriNetUnfolder]: For 2168/2168 co-relation queries the response was YES. [2022-11-20 10:53:22,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16270 conditions, 8535 events. 4991/8535 cut-off events. For 2168/2168 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 62046 event pairs, 3048 based on Foata normal form. 1585/6519 useless extension candidates. Maximal degree in co-relation 7796. Up to 3232 conditions per place. [2022-11-20 10:53:22,192 INFO L137 encePairwiseOnDemand]: 238/266 looper letters, 78 selfloop transitions, 9 changer transitions 6/264 dead transitions. [2022-11-20 10:53:22,192 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 264 transitions, 744 flow [2022-11-20 10:53:22,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:53:22,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:53:22,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1121 transitions. [2022-11-20 10:53:22,215 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8428571428571429 [2022-11-20 10:53:22,216 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1121 transitions. [2022-11-20 10:53:22,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1121 transitions. [2022-11-20 10:53:22,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:53:22,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1121 transitions. [2022-11-20 10:53:22,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 224.2) internal successors, (1121), 5 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:22,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:22,241 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:22,244 INFO L175 Difference]: Start difference. First operand has 235 places, 239 transitions, 499 flow. Second operand 5 states and 1121 transitions. [2022-11-20 10:53:22,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 264 transitions, 744 flow [2022-11-20 10:53:22,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 264 transitions, 718 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-20 10:53:22,262 INFO L231 Difference]: Finished difference. Result has 231 places, 225 transitions, 511 flow [2022-11-20 10:53:22,264 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=511, PETRI_PLACES=231, PETRI_TRANSITIONS=225} [2022-11-20 10:53:22,271 INFO L288 CegarLoopForPetriNet]: 235 programPoint places, -4 predicate places. [2022-11-20 10:53:22,271 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 225 transitions, 511 flow [2022-11-20 10:53:22,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 202.5) internal successors, (810), 4 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:22,272 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:53:22,273 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] [2022-11-20 10:53:22,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:53:22,274 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-20 10:53:22,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:53:22,275 INFO L85 PathProgramCache]: Analyzing trace with hash -433725144, now seen corresponding path program 1 times [2022-11-20 10:53:22,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:53:22,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971753374] [2022-11-20 10:53:22,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:22,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:53:22,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:22,551 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 10:53:22,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:53:22,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971753374] [2022-11-20 10:53:22,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971753374] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:53:22,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910656829] [2022-11-20 10:53:22,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:22,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:53:22,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236b4558-38ba-406c-9be3-3f15e46f3acc/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:53:22,574 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236b4558-38ba-406c-9be3-3f15e46f3acc/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:53:22,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236b4558-38ba-406c-9be3-3f15e46f3acc/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:53:22,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:22,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:53:22,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:53:22,825 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 10:53:22,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:53:22,921 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 10:53:22,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910656829] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:53:22,931 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:53:22,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 10:53:22,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140639850] [2022-11-20 10:53:22,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:53:22,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:53:22,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:53:22,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:53:22,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:53:22,939 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 266 [2022-11-20 10:53:22,959 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 225 transitions, 511 flow. Second operand has 12 states, 12 states have (on average 203.66666666666666) internal successors, (2444), 12 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:22,959 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:53:22,959 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 266 [2022-11-20 10:53:22,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:53:28,184 INFO L130 PetriNetUnfolder]: 12476/21183 cut-off events. [2022-11-20 10:53:28,184 INFO L131 PetriNetUnfolder]: For 1557/1557 co-relation queries the response was YES. [2022-11-20 10:53:28,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38872 conditions, 21183 events. 12476/21183 cut-off events. For 1557/1557 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 165628 event pairs, 7620 based on Foata normal form. 6/12214 useless extension candidates. Maximal degree in co-relation 30876. Up to 3225 conditions per place. [2022-11-20 10:53:28,507 INFO L137 encePairwiseOnDemand]: 251/266 looper letters, 171 selfloop transitions, 40 changer transitions 0/382 dead transitions. [2022-11-20 10:53:28,507 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 382 transitions, 1329 flow [2022-11-20 10:53:28,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 10:53:28,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 10:53:28,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3835 transitions. [2022-11-20 10:53:28,518 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8009607351712615 [2022-11-20 10:53:28,518 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3835 transitions. [2022-11-20 10:53:28,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3835 transitions. [2022-11-20 10:53:28,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:53:28,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3835 transitions. [2022-11-20 10:53:28,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 213.05555555555554) internal successors, (3835), 18 states have internal predecessors, (3835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:28,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 266.0) internal successors, (5054), 19 states have internal predecessors, (5054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:28,547 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 266.0) internal successors, (5054), 19 states have internal predecessors, (5054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:28,547 INFO L175 Difference]: Start difference. First operand has 231 places, 225 transitions, 511 flow. Second operand 18 states and 3835 transitions. [2022-11-20 10:53:28,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 382 transitions, 1329 flow [2022-11-20 10:53:28,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 382 transitions, 1324 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:53:28,563 INFO L231 Difference]: Finished difference. Result has 245 places, 252 transitions, 744 flow [2022-11-20 10:53:28,564 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=744, PETRI_PLACES=245, PETRI_TRANSITIONS=252} [2022-11-20 10:53:28,565 INFO L288 CegarLoopForPetriNet]: 235 programPoint places, 10 predicate places. [2022-11-20 10:53:28,566 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 252 transitions, 744 flow [2022-11-20 10:53:28,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 203.66666666666666) internal successors, (2444), 12 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:28,569 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:53:28,569 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:53:28,692 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236b4558-38ba-406c-9be3-3f15e46f3acc/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 10:53:28,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236b4558-38ba-406c-9be3-3f15e46f3acc/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:53:28,776 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-20 10:53:28,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:53:28,777 INFO L85 PathProgramCache]: Analyzing trace with hash -560576748, now seen corresponding path program 1 times [2022-11-20 10:53:28,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:53:28,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933302556] [2022-11-20 10:53:28,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:28,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:53:28,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:29,028 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:53:29,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:53:29,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933302556] [2022-11-20 10:53:29,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933302556] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:53:29,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127995670] [2022-11-20 10:53:29,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:29,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:53:29,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236b4558-38ba-406c-9be3-3f15e46f3acc/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:53:29,037 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236b4558-38ba-406c-9be3-3f15e46f3acc/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:53:29,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236b4558-38ba-406c-9be3-3f15e46f3acc/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:53:29,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:29,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:53:29,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:53:29,277 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:53:29,277 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:53:29,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127995670] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:53:29,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:53:29,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 10:53:29,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960344684] [2022-11-20 10:53:29,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:53:29,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:53:29,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:53:29,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:53:29,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:53:29,290 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 266 [2022-11-20 10:53:29,292 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 252 transitions, 744 flow. Second operand has 6 states, 6 states have (on average 203.33333333333334) internal successors, (1220), 6 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:29,292 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:53:29,293 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 266 [2022-11-20 10:53:29,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:53:33,773 INFO L130 PetriNetUnfolder]: 12476/21175 cut-off events. [2022-11-20 10:53:33,773 INFO L131 PetriNetUnfolder]: For 1651/1651 co-relation queries the response was YES. [2022-11-20 10:53:33,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38909 conditions, 21175 events. 12476/21175 cut-off events. For 1651/1651 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 165458 event pairs, 7620 based on Foata normal form. 8/12208 useless extension candidates. Maximal degree in co-relation 31101. Up to 12856 conditions per place. [2022-11-20 10:53:34,005 INFO L137 encePairwiseOnDemand]: 255/266 looper letters, 79 selfloop transitions, 27 changer transitions 0/277 dead transitions. [2022-11-20 10:53:34,005 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 277 transitions, 980 flow [2022-11-20 10:53:34,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:53:34,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 10:53:34,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1494 transitions. [2022-11-20 10:53:34,010 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8023630504833512 [2022-11-20 10:53:34,010 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1494 transitions. [2022-11-20 10:53:34,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1494 transitions. [2022-11-20 10:53:34,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:53:34,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1494 transitions. [2022-11-20 10:53:34,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 213.42857142857142) internal successors, (1494), 7 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:34,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 266.0) internal successors, (2128), 8 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:34,021 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 266.0) internal successors, (2128), 8 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:34,021 INFO L175 Difference]: Start difference. First operand has 245 places, 252 transitions, 744 flow. Second operand 7 states and 1494 transitions. [2022-11-20 10:53:34,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 277 transitions, 980 flow [2022-11-20 10:53:34,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 277 transitions, 906 flow, removed 26 selfloop flow, removed 5 redundant places. [2022-11-20 10:53:34,033 INFO L231 Difference]: Finished difference. Result has 240 places, 244 transitions, 670 flow [2022-11-20 10:53:34,034 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=670, PETRI_PLACES=240, PETRI_TRANSITIONS=244} [2022-11-20 10:53:34,037 INFO L288 CegarLoopForPetriNet]: 235 programPoint places, 5 predicate places. [2022-11-20 10:53:34,038 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 244 transitions, 670 flow [2022-11-20 10:53:34,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 203.33333333333334) internal successors, (1220), 6 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:34,039 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:53:34,039 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:53:34,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236b4558-38ba-406c-9be3-3f15e46f3acc/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:53:34,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236b4558-38ba-406c-9be3-3f15e46f3acc/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:53:34,246 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-20 10:53:34,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:53:34,247 INFO L85 PathProgramCache]: Analyzing trace with hash 816520137, now seen corresponding path program 2 times [2022-11-20 10:53:34,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:53:34,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232297852] [2022-11-20 10:53:34,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:34,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:53:34,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:34,614 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:53:34,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:53:34,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232297852] [2022-11-20 10:53:34,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232297852] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:53:34,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372739811] [2022-11-20 10:53:34,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:53:34,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:53:34,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236b4558-38ba-406c-9be3-3f15e46f3acc/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:53:34,624 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236b4558-38ba-406c-9be3-3f15e46f3acc/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:53:34,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236b4558-38ba-406c-9be3-3f15e46f3acc/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 10:53:34,747 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 10:53:34,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:53:34,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 10:53:34,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:53:34,993 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 10:53:34,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:53:35,246 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 10:53:35,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372739811] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:53:35,247 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:53:35,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-20 10:53:35,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456838809] [2022-11-20 10:53:35,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:53:35,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 10:53:35,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:53:35,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 10:53:35,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-20 10:53:35,256 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 266 [2022-11-20 10:53:35,264 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 244 transitions, 670 flow. Second operand has 18 states, 18 states have (on average 189.61111111111111) internal successors, (3413), 18 states have internal predecessors, (3413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:35,264 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:53:35,264 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 266 [2022-11-20 10:53:35,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:53:41,337 INFO L130 PetriNetUnfolder]: 10487/18863 cut-off events. [2022-11-20 10:53:41,337 INFO L131 PetriNetUnfolder]: For 2072/2072 co-relation queries the response was YES. [2022-11-20 10:53:41,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34117 conditions, 18863 events. 10487/18863 cut-off events. For 2072/2072 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 148016 event pairs, 6615 based on Foata normal form. 4/12560 useless extension candidates. Maximal degree in co-relation 28926. Up to 2359 conditions per place. [2022-11-20 10:53:41,532 INFO L137 encePairwiseOnDemand]: 244/266 looper letters, 219 selfloop transitions, 65 changer transitions 0/440 dead transitions. [2022-11-20 10:53:41,532 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 440 transitions, 1737 flow [2022-11-20 10:53:41,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-20 10:53:41,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-20 10:53:41,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 9416 transitions. [2022-11-20 10:53:41,560 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7224182906245205 [2022-11-20 10:53:41,560 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 9416 transitions. [2022-11-20 10:53:41,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 9416 transitions. [2022-11-20 10:53:41,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:53:41,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 9416 transitions. [2022-11-20 10:53:41,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 192.16326530612244) internal successors, (9416), 49 states have internal predecessors, (9416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:41,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 266.0) internal successors, (13300), 50 states have internal predecessors, (13300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:41,628 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 266.0) internal successors, (13300), 50 states have internal predecessors, (13300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:41,629 INFO L175 Difference]: Start difference. First operand has 240 places, 244 transitions, 670 flow. Second operand 49 states and 9416 transitions. [2022-11-20 10:53:41,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 440 transitions, 1737 flow [2022-11-20 10:53:41,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 440 transitions, 1694 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 10:53:41,640 INFO L231 Difference]: Finished difference. Result has 284 places, 267 transitions, 881 flow [2022-11-20 10:53:41,641 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=881, PETRI_PLACES=284, PETRI_TRANSITIONS=267} [2022-11-20 10:53:41,642 INFO L288 CegarLoopForPetriNet]: 235 programPoint places, 49 predicate places. [2022-11-20 10:53:41,642 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 267 transitions, 881 flow [2022-11-20 10:53:41,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 189.61111111111111) internal successors, (3413), 18 states have internal predecessors, (3413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:41,646 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:53:41,646 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] [2022-11-20 10:53:41,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236b4558-38ba-406c-9be3-3f15e46f3acc/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 10:53:41,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_236b4558-38ba-406c-9be3-3f15e46f3acc/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:53:41,869 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-20 10:53:41,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:53:41,870 INFO L85 PathProgramCache]: Analyzing trace with hash 764063566, now seen corresponding path program 1 times [2022-11-20 10:53:41,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:53:41,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382578182] [2022-11-20 10:53:41,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:41,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:53:41,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:42,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:53:42,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:53:42,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382578182] [2022-11-20 10:53:42,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382578182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:53:42,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:53:42,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:53:42,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483834574] [2022-11-20 10:53:42,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:53:42,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:53:42,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:53:42,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:53:42,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:53:42,108 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 266 [2022-11-20 10:53:42,120 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 267 transitions, 881 flow. Second operand has 6 states, 6 states have (on average 209.16666666666666) internal successors, (1255), 6 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:42,120 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:53:42,120 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 266 [2022-11-20 10:53:42,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:53:55,748 INFO L130 PetriNetUnfolder]: 42484/74982 cut-off events. [2022-11-20 10:53:55,749 INFO L131 PetriNetUnfolder]: For 1468/1524 co-relation queries the response was YES. [2022-11-20 10:53:56,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139508 conditions, 74982 events. 42484/74982 cut-off events. For 1468/1524 co-relation queries the response was YES. Maximal size of possible extension queue 1281. Compared 680966 event pairs, 16359 based on Foata normal form. 0/47143 useless extension candidates. Maximal degree in co-relation 139210. Up to 28231 conditions per place. [2022-11-20 10:53:56,616 INFO L137 encePairwiseOnDemand]: 259/266 looper letters, 66 selfloop transitions, 6 changer transitions 0/300 dead transitions. [2022-11-20 10:53:56,617 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 300 transitions, 1099 flow [2022-11-20 10:53:56,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:53:56,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 10:53:56,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1315 transitions. [2022-11-20 10:53:56,622 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8239348370927319 [2022-11-20 10:53:56,622 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1315 transitions. [2022-11-20 10:53:56,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1315 transitions. [2022-11-20 10:53:56,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:53:56,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1315 transitions. [2022-11-20 10:53:56,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 219.16666666666666) internal successors, (1315), 6 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:56,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 266.0) internal successors, (1862), 7 states have internal predecessors, (1862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:56,633 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 266.0) internal successors, (1862), 7 states have internal predecessors, (1862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:56,633 INFO L175 Difference]: Start difference. First operand has 284 places, 267 transitions, 881 flow. Second operand 6 states and 1315 transitions. [2022-11-20 10:53:56,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 300 transitions, 1099 flow [2022-11-20 10:53:56,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 300 transitions, 1016 flow, removed 9 selfloop flow, removed 15 redundant places. [2022-11-20 10:53:56,643 INFO L231 Difference]: Finished difference. Result has 273 places, 266 transitions, 808 flow [2022-11-20 10:53:56,644 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=796, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=808, PETRI_PLACES=273, PETRI_TRANSITIONS=266} [2022-11-20 10:53:56,647 INFO L288 CegarLoopForPetriNet]: 235 programPoint places, 38 predicate places. [2022-11-20 10:53:56,648 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 266 transitions, 808 flow [2022-11-20 10:53:56,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 209.16666666666666) internal successors, (1255), 6 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:56,649 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:53:56,649 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] [2022-11-20 10:53:56,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:53:56,650 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-20 10:53:56,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:53:56,650 INFO L85 PathProgramCache]: Analyzing trace with hash -2083832375, now seen corresponding path program 1 times [2022-11-20 10:53:56,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:53:56,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867394991] [2022-11-20 10:53:56,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:56,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:53:56,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:56,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:53:56,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:53:56,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867394991] [2022-11-20 10:53:56,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867394991] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:53:56,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:53:56,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:53:56,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805867813] [2022-11-20 10:53:56,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:53:56,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:53:56,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:53:56,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:53:56,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:53:56,776 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 266 [2022-11-20 10:53:56,777 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 266 transitions, 808 flow. Second operand has 4 states, 4 states have (on average 216.75) internal successors, (867), 4 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:56,779 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:53:56,779 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 266 [2022-11-20 10:53:56,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:06,354 INFO L130 PetriNetUnfolder]: 36303/62620 cut-off events. [2022-11-20 10:54:06,355 INFO L131 PetriNetUnfolder]: For 3444/3444 co-relation queries the response was YES. [2022-11-20 10:54:06,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120797 conditions, 62620 events. 36303/62620 cut-off events. For 3444/3444 co-relation queries the response was YES. Maximal size of possible extension queue 1097. Compared 553412 event pairs, 9443 based on Foata normal form. 0/42334 useless extension candidates. Maximal degree in co-relation 120526. Up to 17515 conditions per place. [2022-11-20 10:54:06,756 INFO L137 encePairwiseOnDemand]: 261/266 looper letters, 76 selfloop transitions, 4 changer transitions 0/316 dead transitions. [2022-11-20 10:54:06,756 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 316 transitions, 1083 flow [2022-11-20 10:54:06,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:54:06,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:54:06,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1156 transitions. [2022-11-20 10:54:06,759 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.869172932330827 [2022-11-20 10:54:06,760 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1156 transitions. [2022-11-20 10:54:06,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1156 transitions. [2022-11-20 10:54:06,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:06,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1156 transitions. [2022-11-20 10:54:06,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 231.2) internal successors, (1156), 5 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:06,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:06,767 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:06,768 INFO L175 Difference]: Start difference. First operand has 273 places, 266 transitions, 808 flow. Second operand 5 states and 1156 transitions. [2022-11-20 10:54:06,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 316 transitions, 1083 flow [2022-11-20 10:54:06,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 316 transitions, 1071 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 10:54:06,824 INFO L231 Difference]: Finished difference. Result has 271 places, 265 transitions, 802 flow [2022-11-20 10:54:06,824 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=794, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=802, PETRI_PLACES=271, PETRI_TRANSITIONS=265} [2022-11-20 10:54:06,825 INFO L288 CegarLoopForPetriNet]: 235 programPoint places, 36 predicate places. [2022-11-20 10:54:06,825 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 265 transitions, 802 flow [2022-11-20 10:54:06,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 216.75) internal successors, (867), 4 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:06,826 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:06,826 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] [2022-11-20 10:54:06,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 10:54:06,826 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-20 10:54:06,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:06,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1746474688, now seen corresponding path program 1 times [2022-11-20 10:54:06,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:06,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354306813] [2022-11-20 10:54:06,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:06,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:06,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:07,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:07,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:07,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354306813] [2022-11-20 10:54:07,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354306813] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:07,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:07,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:54:07,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688876297] [2022-11-20 10:54:07,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:07,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:54:07,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:07,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:54:07,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:54:07,191 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 266 [2022-11-20 10:54:07,192 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 265 transitions, 802 flow. Second operand has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:07,192 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:07,192 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 266 [2022-11-20 10:54:07,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand