./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12984626-db22-438c-bf8c-e2e5a43c5101/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12984626-db22-438c-bf8c-e2e5a43c5101/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_12984626-db22-438c-bf8c-e2e5a43c5101/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12984626-db22-438c-bf8c-e2e5a43c5101/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12984626-db22-438c-bf8c-e2e5a43c5101/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_12984626-db22-438c-bf8c-e2e5a43c5101/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 1890d03ecee4b13e5a6c0f8c72292cb7ef9118f93d1435df375cec86140a0197 --- 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 10:53:02,904 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:53:02,906 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:53:02,925 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:53:02,926 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:53:02,927 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:53:02,929 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:53:02,930 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:53:02,932 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:53:02,933 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:53:02,934 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:53:02,936 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:53:02,936 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:53:02,946 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:53:02,948 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:53:02,951 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:53:02,953 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:53:02,955 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:53:02,957 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:53:02,960 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:53:02,965 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:53:02,966 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:53:02,967 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:53:02,968 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:53:02,971 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:53:02,972 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:53:02,972 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:53:02,973 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:53:02,973 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:53:02,974 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:53:02,975 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:53:02,975 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:53:02,976 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:53:02,977 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:53:02,978 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:53:02,978 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:53:02,979 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:53:02,979 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:53:02,980 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:53:02,981 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:53:02,981 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:53:02,982 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12984626-db22-438c-bf8c-e2e5a43c5101/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 10:53:03,008 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:53:03,010 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:53:03,011 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:53:03,011 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:53:03,012 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:53:03,013 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:53:03,013 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:53:03,014 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:53:03,014 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:53:03,014 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:53:03,015 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:53:03,016 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:53:03,016 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:53:03,016 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:53:03,016 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:53:03,017 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:53:03,017 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:53:03,017 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:53:03,017 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 10:53:03,018 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:53:03,018 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:53:03,018 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:53:03,018 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:53:03,019 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:53:03,019 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:53:03,019 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:53:03,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:53:03,020 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:53:03,020 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:53:03,021 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:53:03,021 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:53:03,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:53:03,022 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:53:03,022 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:53:03,022 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:53:03,022 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_12984626-db22-438c-bf8c-e2e5a43c5101/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12984626-db22-438c-bf8c-e2e5a43c5101/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1890d03ecee4b13e5a6c0f8c72292cb7ef9118f93d1435df375cec86140a0197 [2022-11-20 10:53:03,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:53:03,364 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:53:03,367 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:53:03,368 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:53:03,369 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:53:03,370 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12984626-db22-438c-bf8c-e2e5a43c5101/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2022-11-20 10:53:06,430 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:53:06,620 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:53:06,627 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12984626-db22-438c-bf8c-e2e5a43c5101/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2022-11-20 10:53:06,635 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12984626-db22-438c-bf8c-e2e5a43c5101/bin/uautomizer-ug76WZFUDN/data/3c012d5bd/ad9cb6913a764570822b5b5c2bf2f998/FLAG1752208d8 [2022-11-20 10:53:06,650 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12984626-db22-438c-bf8c-e2e5a43c5101/bin/uautomizer-ug76WZFUDN/data/3c012d5bd/ad9cb6913a764570822b5b5c2bf2f998 [2022-11-20 10:53:06,652 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:53:06,654 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:53:06,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:53:06,656 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:53:06,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:53:06,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:53:06" (1/1) ... [2022-11-20 10:53:06,661 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25660318 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:53:06, skipping insertion in model container [2022-11-20 10:53:06,661 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:53:06" (1/1) ... [2022-11-20 10:53:06,669 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:53:06,686 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:53:06,885 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_12984626-db22-438c-bf8c-e2e5a43c5101/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c[2865,2878] [2022-11-20 10:53:06,893 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:53:06,902 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:53:06,928 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_12984626-db22-438c-bf8c-e2e5a43c5101/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c[2865,2878] [2022-11-20 10:53:06,933 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:53:06,947 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:53:06,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:53:06 WrapperNode [2022-11-20 10:53:06,948 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:53:06,949 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:53:06,949 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:53:06,949 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:53:06,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:53:06" (1/1) ... [2022-11-20 10:53:06,966 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:53:06" (1/1) ... [2022-11-20 10:53:07,019 INFO L138 Inliner]: procedures = 26, calls = 55, calls flagged for inlining = 16, calls inlined = 22, statements flattened = 333 [2022-11-20 10:53:07,022 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:53:07,024 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:53:07,024 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:53:07,024 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:53:07,035 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:53:06" (1/1) ... [2022-11-20 10:53:07,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:53:06" (1/1) ... [2022-11-20 10:53:07,057 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:53:06" (1/1) ... [2022-11-20 10:53:07,058 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:53:06" (1/1) ... [2022-11-20 10:53:07,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:53:06" (1/1) ... [2022-11-20 10:53:07,073 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:53:06" (1/1) ... [2022-11-20 10:53:07,075 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:53:06" (1/1) ... [2022-11-20 10:53:07,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:53:06" (1/1) ... [2022-11-20 10:53:07,081 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:53:07,082 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:53:07,082 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:53:07,082 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:53:07,083 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:53:06" (1/1) ... [2022-11-20 10:53:07,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:53:07,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12984626-db22-438c-bf8c-e2e5a43c5101/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:53:07,118 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12984626-db22-438c-bf8c-e2e5a43c5101/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:53:07,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12984626-db22-438c-bf8c-e2e5a43c5101/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:53:07,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:53:07,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:53:07,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:53:07,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:53:07,155 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 10:53:07,156 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 10:53:07,156 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 10:53:07,156 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 10:53:07,156 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 10:53:07,157 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 10:53:07,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:53:07,157 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 10:53:07,157 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 10:53:07,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 10:53:07,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:53:07,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:53:07,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:53:07,160 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 10:53:07,301 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:53:07,304 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:53:08,081 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:53:08,713 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:53:08,713 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-20 10:53:08,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:53:08 BoogieIcfgContainer [2022-11-20 10:53:08,717 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:53:08,721 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:53:08,721 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:53:08,725 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:53:08,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:53:06" (1/3) ... [2022-11-20 10:53:08,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19bf5cdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:53:08, skipping insertion in model container [2022-11-20 10:53:08,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:53:06" (2/3) ... [2022-11-20 10:53:08,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19bf5cdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:53:08, skipping insertion in model container [2022-11-20 10:53:08,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:53:08" (3/3) ... [2022-11-20 10:53:08,730 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-dot-product.wvr.c [2022-11-20 10:53:08,740 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 10:53:08,751 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:53:08,751 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2022-11-20 10:53:08,752 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 10:53:08,940 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 10:53:08,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 291 places, 306 transitions, 636 flow [2022-11-20 10:53:09,092 INFO L130 PetriNetUnfolder]: 25/303 cut-off events. [2022-11-20 10:53:09,092 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 10:53:09,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 303 events. 25/303 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 596 event pairs, 0 based on Foata normal form. 0/244 useless extension candidates. Maximal degree in co-relation 232. Up to 2 conditions per place. [2022-11-20 10:53:09,101 INFO L82 GeneralOperation]: Start removeDead. Operand has 291 places, 306 transitions, 636 flow [2022-11-20 10:53:09,108 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 268 places, 282 transitions, 579 flow [2022-11-20 10:53:09,117 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:53:09,124 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;@510c6f8e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:53:09,124 INFO L358 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2022-11-20 10:53:09,137 INFO L130 PetriNetUnfolder]: 3/68 cut-off events. [2022-11-20 10:53:09,137 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 10:53:09,138 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:53:09,138 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:53:09,139 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-20 10:53:09,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:53:09,144 INFO L85 PathProgramCache]: Analyzing trace with hash 362630567, now seen corresponding path program 1 times [2022-11-20 10:53:09,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:53:09,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620221693] [2022-11-20 10:53:09,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:09,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:53:09,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:09,525 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 10:53:09,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:53:09,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620221693] [2022-11-20 10:53:09,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620221693] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:53:09,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:53:09,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:53:09,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798700373] [2022-11-20 10:53:09,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:53:09,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:53:09,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:53:09,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:53:09,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:53:09,572 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 306 [2022-11-20 10:53:09,578 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 282 transitions, 579 flow. Second operand has 4 states, 4 states have (on average 238.5) internal successors, (954), 4 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:09,581 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:53:09,582 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 306 [2022-11-20 10:53:09,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:53:11,579 INFO L130 PetriNetUnfolder]: 1085/5053 cut-off events. [2022-11-20 10:53:11,579 INFO L131 PetriNetUnfolder]: For 338/338 co-relation queries the response was YES. [2022-11-20 10:53:11,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6865 conditions, 5053 events. 1085/5053 cut-off events. For 338/338 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 58309 event pairs, 910 based on Foata normal form. 758/4093 useless extension candidates. Maximal degree in co-relation 2983. Up to 781 conditions per place. [2022-11-20 10:53:11,666 INFO L137 encePairwiseOnDemand]: 271/306 looper letters, 72 selfloop transitions, 9 changer transitions 5/297 dead transitions. [2022-11-20 10:53:11,666 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 297 transitions, 786 flow [2022-11-20 10:53:11,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:53:11,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:53:11,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1310 transitions. [2022-11-20 10:53:11,691 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8562091503267973 [2022-11-20 10:53:11,692 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1310 transitions. [2022-11-20 10:53:11,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1310 transitions. [2022-11-20 10:53:11,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:53:11,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1310 transitions. [2022-11-20 10:53:11,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 262.0) internal successors, (1310), 5 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states 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 10:53:11,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 306.0) internal successors, (1836), 6 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states 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 10:53:11,718 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 306.0) internal successors, (1836), 6 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states 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 10:53:11,720 INFO L175 Difference]: Start difference. First operand has 268 places, 282 transitions, 579 flow. Second operand 5 states and 1310 transitions. [2022-11-20 10:53:11,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 297 transitions, 786 flow [2022-11-20 10:53:11,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 297 transitions, 768 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 10:53:11,736 INFO L231 Difference]: Finished difference. Result has 264 places, 262 transitions, 583 flow [2022-11-20 10:53:11,738 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=583, PETRI_PLACES=264, PETRI_TRANSITIONS=262} [2022-11-20 10:53:11,744 INFO L288 CegarLoopForPetriNet]: 268 programPoint places, -4 predicate places. [2022-11-20 10:53:11,744 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 262 transitions, 583 flow [2022-11-20 10:53:11,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 238.5) internal successors, (954), 4 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:11,746 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:53:11,746 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] [2022-11-20 10:53:11,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:53:11,747 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-20 10:53:11,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:53:11,747 INFO L85 PathProgramCache]: Analyzing trace with hash -156937505, now seen corresponding path program 1 times [2022-11-20 10:53:11,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:53:11,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577527341] [2022-11-20 10:53:11,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:11,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:53:11,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:11,930 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 10:53:11,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:53:11,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577527341] [2022-11-20 10:53:11,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577527341] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:53:11,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093280574] [2022-11-20 10:53:11,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:11,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:53:11,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12984626-db22-438c-bf8c-e2e5a43c5101/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:53:11,936 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12984626-db22-438c-bf8c-e2e5a43c5101/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:53:11,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12984626-db22-438c-bf8c-e2e5a43c5101/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:53:12,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:12,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:53:12,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:53:12,201 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 10:53:12,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:53:12,284 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 10:53:12,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093280574] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:53:12,284 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:53:12,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 10:53:12,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002159502] [2022-11-20 10:53:12,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:53:12,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:53:12,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:53:12,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:53:12,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:53:12,290 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 306 [2022-11-20 10:53:12,292 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 262 transitions, 583 flow. Second operand has 12 states, 12 states have (on average 239.66666666666666) internal successors, (2876), 12 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states 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 10:53:12,292 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:53:12,293 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 306 [2022-11-20 10:53:12,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:53:16,465 INFO L130 PetriNetUnfolder]: 2711/12512 cut-off events. [2022-11-20 10:53:16,465 INFO L131 PetriNetUnfolder]: For 237/237 co-relation queries the response was YES. [2022-11-20 10:53:16,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16836 conditions, 12512 events. 2711/12512 cut-off events. For 237/237 co-relation queries the response was YES. Maximal size of possible extension queue 749. Compared 161701 event pairs, 2275 based on Foata normal form. 6/8248 useless extension candidates. Maximal degree in co-relation 13264. Up to 774 conditions per place. [2022-11-20 10:53:16,635 INFO L137 encePairwiseOnDemand]: 291/306 looper letters, 156 selfloop transitions, 40 changer transitions 0/407 dead transitions. [2022-11-20 10:53:16,636 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 407 transitions, 1339 flow [2022-11-20 10:53:16,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 10:53:16,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 10:53:16,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4468 transitions. [2022-11-20 10:53:16,648 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8111837327523602 [2022-11-20 10:53:16,648 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4468 transitions. [2022-11-20 10:53:16,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4468 transitions. [2022-11-20 10:53:16,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:53:16,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4468 transitions. [2022-11-20 10:53:16,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 248.22222222222223) internal successors, (4468), 18 states have internal predecessors, (4468), 0 states have call successors, (0), 0 states 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 10:53:16,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 306.0) internal successors, (5814), 19 states have internal predecessors, (5814), 0 states have call successors, (0), 0 states 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 10:53:16,683 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 306.0) internal successors, (5814), 19 states have internal predecessors, (5814), 0 states have call successors, (0), 0 states 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 10:53:16,684 INFO L175 Difference]: Start difference. First operand has 264 places, 262 transitions, 583 flow. Second operand 18 states and 4468 transitions. [2022-11-20 10:53:16,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 407 transitions, 1339 flow [2022-11-20 10:53:16,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 407 transitions, 1334 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:53:16,695 INFO L231 Difference]: Finished difference. Result has 279 places, 289 transitions, 816 flow [2022-11-20 10:53:16,695 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=816, PETRI_PLACES=279, PETRI_TRANSITIONS=289} [2022-11-20 10:53:16,696 INFO L288 CegarLoopForPetriNet]: 268 programPoint places, 11 predicate places. [2022-11-20 10:53:16,696 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 289 transitions, 816 flow [2022-11-20 10:53:16,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 239.66666666666666) internal successors, (2876), 12 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states 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 10:53:16,699 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:53:16,699 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] [2022-11-20 10:53:16,706 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12984626-db22-438c-bf8c-e2e5a43c5101/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 10:53:16,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12984626-db22-438c-bf8c-e2e5a43c5101/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:53:16,906 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-20 10:53:16,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:53:16,906 INFO L85 PathProgramCache]: Analyzing trace with hash -570094258, now seen corresponding path program 1 times [2022-11-20 10:53:16,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:53:16,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957060013] [2022-11-20 10:53:16,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:16,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:53:16,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:17,106 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 10:53:17,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:53:17,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957060013] [2022-11-20 10:53:17,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957060013] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:53:17,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451662884] [2022-11-20 10:53:17,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:17,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:53:17,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12984626-db22-438c-bf8c-e2e5a43c5101/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:53:17,109 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12984626-db22-438c-bf8c-e2e5a43c5101/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:53:17,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12984626-db22-438c-bf8c-e2e5a43c5101/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:53:17,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:17,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:53:17,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:53:17,344 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 10:53:17,345 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:53:17,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451662884] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:53:17,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:53:17,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 10:53:17,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863580820] [2022-11-20 10:53:17,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:53:17,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:53:17,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:53:17,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:53:17,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:53:17,349 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 306 [2022-11-20 10:53:17,350 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 289 transitions, 816 flow. Second operand has 6 states, 6 states have (on average 239.33333333333334) internal successors, (1436), 6 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states 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 10:53:17,350 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:53:17,351 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 306 [2022-11-20 10:53:17,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:53:20,367 INFO L130 PetriNetUnfolder]: 2711/12504 cut-off events. [2022-11-20 10:53:20,367 INFO L131 PetriNetUnfolder]: For 331/331 co-relation queries the response was YES. [2022-11-20 10:53:20,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16873 conditions, 12504 events. 2711/12504 cut-off events. For 331/331 co-relation queries the response was YES. Maximal size of possible extension queue 749. Compared 161818 event pairs, 2275 based on Foata normal form. 8/8242 useless extension candidates. Maximal degree in co-relation 13468. Up to 3052 conditions per place. [2022-11-20 10:53:20,491 INFO L137 encePairwiseOnDemand]: 295/306 looper letters, 73 selfloop transitions, 27 changer transitions 0/311 dead transitions. [2022-11-20 10:53:20,491 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 311 transitions, 1032 flow [2022-11-20 10:53:20,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:53:20,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 10:53:20,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1740 transitions. [2022-11-20 10:53:20,497 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8123249299719888 [2022-11-20 10:53:20,498 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1740 transitions. [2022-11-20 10:53:20,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1740 transitions. [2022-11-20 10:53:20,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:53:20,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1740 transitions. [2022-11-20 10:53:20,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 248.57142857142858) internal successors, (1740), 7 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states 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 10:53:20,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 306.0) internal successors, (2448), 8 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states 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 10:53:20,512 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 306.0) internal successors, (2448), 8 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states 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 10:53:20,512 INFO L175 Difference]: Start difference. First operand has 279 places, 289 transitions, 816 flow. Second operand 7 states and 1740 transitions. [2022-11-20 10:53:20,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 311 transitions, 1032 flow [2022-11-20 10:53:20,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 311 transitions, 958 flow, removed 26 selfloop flow, removed 5 redundant places. [2022-11-20 10:53:20,527 INFO L231 Difference]: Finished difference. Result has 274 places, 281 transitions, 742 flow [2022-11-20 10:53:20,528 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=742, PETRI_PLACES=274, PETRI_TRANSITIONS=281} [2022-11-20 10:53:20,531 INFO L288 CegarLoopForPetriNet]: 268 programPoint places, 6 predicate places. [2022-11-20 10:53:20,531 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 281 transitions, 742 flow [2022-11-20 10:53:20,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 239.33333333333334) internal successors, (1436), 6 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states 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 10:53:20,533 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:53:20,533 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] [2022-11-20 10:53:20,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12984626-db22-438c-bf8c-e2e5a43c5101/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:53:20,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12984626-db22-438c-bf8c-e2e5a43c5101/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:53:20,741 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-20 10:53:20,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:53:20,741 INFO L85 PathProgramCache]: Analyzing trace with hash 451955623, now seen corresponding path program 2 times [2022-11-20 10:53:20,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:53:20,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132362503] [2022-11-20 10:53:20,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:20,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:53:20,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:21,158 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 10:53:21,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:53:21,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132362503] [2022-11-20 10:53:21,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132362503] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:53:21,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945966987] [2022-11-20 10:53:21,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:53:21,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:53:21,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12984626-db22-438c-bf8c-e2e5a43c5101/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:53:21,167 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12984626-db22-438c-bf8c-e2e5a43c5101/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:53:21,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12984626-db22-438c-bf8c-e2e5a43c5101/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 10:53:21,341 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 10:53:21,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:53:21,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 10:53:21,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:53:21,515 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 10:53:21,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:53:21,718 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 10:53:21,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945966987] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:53:21,718 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:53:21,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-20 10:53:21,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566555319] [2022-11-20 10:53:21,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:53:21,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 10:53:21,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:53:21,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 10:53:21,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-20 10:53:21,728 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 306 [2022-11-20 10:53:21,734 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 281 transitions, 742 flow. Second operand has 18 states, 18 states have (on average 220.61111111111111) internal successors, (3971), 18 states have internal predecessors, (3971), 0 states have call successors, (0), 0 states 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 10:53:21,734 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:53:21,734 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 306 [2022-11-20 10:53:21,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:53:28,779 INFO L130 PetriNetUnfolder]: 7078/25163 cut-off events. [2022-11-20 10:53:28,779 INFO L131 PetriNetUnfolder]: For 532/532 co-relation queries the response was YES. [2022-11-20 10:53:28,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35972 conditions, 25163 events. 7078/25163 cut-off events. For 532/532 co-relation queries the response was YES. Maximal size of possible extension queue 1038. Compared 333598 event pairs, 5509 based on Foata normal form. 4/15626 useless extension candidates. Maximal degree in co-relation 30534. Up to 1422 conditions per place. [2022-11-20 10:53:29,016 INFO L137 encePairwiseOnDemand]: 286/306 looper letters, 247 selfloop transitions, 65 changer transitions 0/503 dead transitions. [2022-11-20 10:53:29,017 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 503 transitions, 1905 flow [2022-11-20 10:53:29,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-20 10:53:29,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-20 10:53:29,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 10949 transitions. [2022-11-20 10:53:29,037 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7302254235027344 [2022-11-20 10:53:29,037 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 10949 transitions. [2022-11-20 10:53:29,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 10949 transitions. [2022-11-20 10:53:29,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:53:29,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 10949 transitions. [2022-11-20 10:53:29,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 223.44897959183675) internal successors, (10949), 49 states have internal predecessors, (10949), 0 states have call successors, (0), 0 states 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 10:53:29,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 306.0) internal successors, (15300), 50 states have internal predecessors, (15300), 0 states have call successors, (0), 0 states 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 10:53:29,114 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 306.0) internal successors, (15300), 50 states have internal predecessors, (15300), 0 states have call successors, (0), 0 states 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 10:53:29,114 INFO L175 Difference]: Start difference. First operand has 274 places, 281 transitions, 742 flow. Second operand 49 states and 10949 transitions. [2022-11-20 10:53:29,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 503 transitions, 1905 flow [2022-11-20 10:53:29,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 503 transitions, 1862 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 10:53:29,125 INFO L231 Difference]: Finished difference. Result has 320 places, 306 transitions, 957 flow [2022-11-20 10:53:29,126 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=698, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=957, PETRI_PLACES=320, PETRI_TRANSITIONS=306} [2022-11-20 10:53:29,127 INFO L288 CegarLoopForPetriNet]: 268 programPoint places, 52 predicate places. [2022-11-20 10:53:29,128 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 306 transitions, 957 flow [2022-11-20 10:53:29,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 220.61111111111111) internal successors, (3971), 18 states have internal predecessors, (3971), 0 states have call successors, (0), 0 states 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 10:53:29,129 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:53:29,130 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] [2022-11-20 10:53:29,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12984626-db22-438c-bf8c-e2e5a43c5101/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 10:53:29,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12984626-db22-438c-bf8c-e2e5a43c5101/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:53:29,336 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-20 10:53:29,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:53:29,337 INFO L85 PathProgramCache]: Analyzing trace with hash -425379176, now seen corresponding path program 1 times [2022-11-20 10:53:29,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:53:29,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596114318] [2022-11-20 10:53:29,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:29,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:53:29,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:29,558 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 10:53:29,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:53:29,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596114318] [2022-11-20 10:53:29,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596114318] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:53:29,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:53:29,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:53:29,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370342332] [2022-11-20 10:53:29,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:53:29,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:53:29,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:53:29,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:53:29,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:53:29,562 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 306 [2022-11-20 10:53:29,563 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 306 transitions, 957 flow. Second operand has 7 states, 7 states have (on average 228.57142857142858) internal successors, (1600), 7 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states 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 10:53:29,564 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:53:29,564 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 306 [2022-11-20 10:53:29,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:53:39,475 INFO L130 PetriNetUnfolder]: 13609/46600 cut-off events. [2022-11-20 10:53:39,475 INFO L131 PetriNetUnfolder]: For 1217/1308 co-relation queries the response was YES. [2022-11-20 10:53:39,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67560 conditions, 46600 events. 13609/46600 cut-off events. For 1217/1308 co-relation queries the response was YES. Maximal size of possible extension queue 1960. Compared 665681 event pairs, 10633 based on Foata normal form. 0/30206 useless extension candidates. Maximal degree in co-relation 57909. Up to 14321 conditions per place. [2022-11-20 10:53:40,029 INFO L137 encePairwiseOnDemand]: 295/306 looper letters, 140 selfloop transitions, 22 changer transitions 0/371 dead transitions. [2022-11-20 10:53:40,029 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 371 transitions, 1516 flow [2022-11-20 10:53:40,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 10:53:40,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 10:53:40,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2358 transitions. [2022-11-20 10:53:40,034 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7705882352941177 [2022-11-20 10:53:40,035 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2358 transitions. [2022-11-20 10:53:40,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2358 transitions. [2022-11-20 10:53:40,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:53:40,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2358 transitions. [2022-11-20 10:53:40,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 235.8) internal successors, (2358), 10 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states 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 10:53:40,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 306.0) internal successors, (3366), 11 states have internal predecessors, (3366), 0 states have call successors, (0), 0 states 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 10:53:40,047 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 306.0) internal successors, (3366), 11 states have internal predecessors, (3366), 0 states have call successors, (0), 0 states 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 10:53:40,048 INFO L175 Difference]: Start difference. First operand has 320 places, 306 transitions, 957 flow. Second operand 10 states and 2358 transitions. [2022-11-20 10:53:40,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 371 transitions, 1516 flow [2022-11-20 10:53:40,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 371 transitions, 1409 flow, removed 13 selfloop flow, removed 15 redundant places. [2022-11-20 10:53:40,056 INFO L231 Difference]: Finished difference. Result has 317 places, 308 transitions, 936 flow [2022-11-20 10:53:40,057 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=874, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=936, PETRI_PLACES=317, PETRI_TRANSITIONS=308} [2022-11-20 10:53:40,059 INFO L288 CegarLoopForPetriNet]: 268 programPoint places, 49 predicate places. [2022-11-20 10:53:40,060 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 308 transitions, 936 flow [2022-11-20 10:53:40,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 228.57142857142858) internal successors, (1600), 7 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states 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 10:53:40,060 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:53:40,061 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] [2022-11-20 10:53:40,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:53:40,061 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-20 10:53:40,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:53:40,062 INFO L85 PathProgramCache]: Analyzing trace with hash 32746338, now seen corresponding path program 1 times [2022-11-20 10:53:40,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:53:40,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996863338] [2022-11-20 10:53:40,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:40,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:53:40,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:40,445 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 10:53:40,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:53:40,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996863338] [2022-11-20 10:53:40,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996863338] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:53:40,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:53:40,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 10:53:40,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94499815] [2022-11-20 10:53:40,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:53:40,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 10:53:40,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:53:40,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 10:53:40,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:53:40,454 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 306 [2022-11-20 10:53:40,456 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 308 transitions, 936 flow. Second operand has 10 states, 10 states have (on average 199.3) internal successors, (1993), 10 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states 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 10:53:40,456 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:53:40,457 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 306 [2022-11-20 10:53:40,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:53:51,846 INFO L130 PetriNetUnfolder]: 18656/58101 cut-off events. [2022-11-20 10:53:51,846 INFO L131 PetriNetUnfolder]: For 3287/3497 co-relation queries the response was YES. [2022-11-20 10:53:52,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87530 conditions, 58101 events. 18656/58101 cut-off events. For 3287/3497 co-relation queries the response was YES. Maximal size of possible extension queue 1727. Compared 799132 event pairs, 14441 based on Foata normal form. 210/38914 useless extension candidates. Maximal degree in co-relation 81305. Up to 24080 conditions per place. [2022-11-20 10:53:52,343 INFO L137 encePairwiseOnDemand]: 292/306 looper letters, 160 selfloop transitions, 23 changer transitions 2/375 dead transitions. [2022-11-20 10:53:52,343 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 375 transitions, 1521 flow [2022-11-20 10:53:52,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:53:52,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 10:53:52,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2276 transitions. [2022-11-20 10:53:52,350 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6761734997029115 [2022-11-20 10:53:52,350 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2276 transitions. [2022-11-20 10:53:52,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2276 transitions. [2022-11-20 10:53:52,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:53:52,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2276 transitions. [2022-11-20 10:53:52,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 206.9090909090909) internal successors, (2276), 11 states have internal predecessors, (2276), 0 states have call successors, (0), 0 states 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 10:53:52,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 306.0) internal successors, (3672), 12 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states 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 10:53:52,363 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 306.0) internal successors, (3672), 12 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states 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 10:53:52,364 INFO L175 Difference]: Start difference. First operand has 317 places, 308 transitions, 936 flow. Second operand 11 states and 2276 transitions. [2022-11-20 10:53:52,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 375 transitions, 1521 flow [2022-11-20 10:53:52,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 375 transitions, 1497 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 10:53:52,379 INFO L231 Difference]: Finished difference. Result has 328 places, 312 transitions, 988 flow [2022-11-20 10:53:52,380 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=913, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=988, PETRI_PLACES=328, PETRI_TRANSITIONS=312} [2022-11-20 10:53:52,380 INFO L288 CegarLoopForPetriNet]: 268 programPoint places, 60 predicate places. [2022-11-20 10:53:52,381 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 312 transitions, 988 flow [2022-11-20 10:53:52,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 199.3) internal successors, (1993), 10 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states 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 10:53:52,382 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:53:52,382 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] [2022-11-20 10:53:52,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 10:53:52,382 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-20 10:53:52,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:53:52,383 INFO L85 PathProgramCache]: Analyzing trace with hash -570715185, now seen corresponding path program 1 times [2022-11-20 10:53:52,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:53:52,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630630198] [2022-11-20 10:53:52,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:52,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:53:52,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:52,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:53:52,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:53:52,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630630198] [2022-11-20 10:53:52,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630630198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:53:52,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:53:52,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 10:53:52,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187117906] [2022-11-20 10:53:52,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:53:52,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:53:52,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:53:52,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:53:52,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:53:52,826 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 306 [2022-11-20 10:53:52,828 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 312 transitions, 988 flow. Second operand has 12 states, 12 states have (on average 202.41666666666666) internal successors, (2429), 12 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states 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 10:53:52,828 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:53:52,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 306 [2022-11-20 10:53:52,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand