./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-array-sum-alt.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_67694758-3b00-4080-ab18-38460f666b30/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67694758-3b00-4080-ab18-38460f666b30/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_67694758-3b00-4080-ab18-38460f666b30/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67694758-3b00-4080-ab18-38460f666b30/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67694758-3b00-4080-ab18-38460f666b30/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_67694758-3b00-4080-ab18-38460f666b30/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 3a95f2ef87fd1cf5c8213f05c50508f1a1765fc5482d62813e9c15181aaf2ab6 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:46:06,107 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:46:06,109 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:46:06,137 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:46:06,138 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:46:06,139 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:46:06,141 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:46:06,143 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:46:06,145 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:46:06,147 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:46:06,148 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:46:06,150 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:46:06,150 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:46:06,152 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:46:06,154 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:46:06,155 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:46:06,157 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:46:06,158 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:46:06,160 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:46:06,163 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:46:06,165 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:46:06,166 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:46:06,168 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:46:06,169 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:46:06,174 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:46:06,175 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:46:06,175 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:46:06,176 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:46:06,177 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:46:06,179 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:46:06,179 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:46:06,181 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:46:06,182 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:46:06,183 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:46:06,185 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:46:06,185 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:46:06,186 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:46:06,187 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:46:06,187 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:46:06,189 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:46:06,190 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:46:06,191 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67694758-3b00-4080-ab18-38460f666b30/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 11:46:06,221 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:46:06,221 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:46:06,222 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:46:06,222 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:46:06,223 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:46:06,223 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:46:06,224 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:46:06,225 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:46:06,225 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:46:06,226 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:46:06,226 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:46:06,226 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:46:06,227 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:46:06,227 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:46:06,227 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:46:06,228 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:46:06,228 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:46:06,228 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:46:06,229 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 11:46:06,229 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:46:06,229 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:46:06,230 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:46:06,230 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:46:06,230 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:46:06,231 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:46:06,231 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:46:06,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:46:06,232 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:46:06,232 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:46:06,232 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:46:06,233 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:46:06,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:46:06,233 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:46:06,234 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:46:06,234 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:46:06,234 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_67694758-3b00-4080-ab18-38460f666b30/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67694758-3b00-4080-ab18-38460f666b30/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a95f2ef87fd1cf5c8213f05c50508f1a1765fc5482d62813e9c15181aaf2ab6 [2022-11-20 11:46:06,546 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:46:06,595 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:46:06,599 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:46:06,600 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:46:06,603 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:46:06,604 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67694758-3b00-4080-ab18-38460f666b30/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c [2022-11-20 11:46:10,330 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:46:10,561 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:46:10,562 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67694758-3b00-4080-ab18-38460f666b30/sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c [2022-11-20 11:46:10,574 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67694758-3b00-4080-ab18-38460f666b30/bin/uautomizer-ug76WZFUDN/data/bc84230e4/71e337acea0445329a069baccfa7eea5/FLAGcdaf57119 [2022-11-20 11:46:10,592 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67694758-3b00-4080-ab18-38460f666b30/bin/uautomizer-ug76WZFUDN/data/bc84230e4/71e337acea0445329a069baccfa7eea5 [2022-11-20 11:46:10,595 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:46:10,597 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:46:10,599 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:46:10,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:46:10,604 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:46:10,605 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:46:10" (1/1) ... [2022-11-20 11:46:10,607 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ec02ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:10, skipping insertion in model container [2022-11-20 11:46:10,607 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:46:10" (1/1) ... [2022-11-20 11:46:10,616 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:46:10,640 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:46:10,858 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_67694758-3b00-4080-ab18-38460f666b30/sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c[2761,2774] [2022-11-20 11:46:10,868 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:46:10,880 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:46:10,907 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_67694758-3b00-4080-ab18-38460f666b30/sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c[2761,2774] [2022-11-20 11:46:10,914 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:46:10,933 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:46:10,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:10 WrapperNode [2022-11-20 11:46:10,933 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:46:10,934 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:46:10,935 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:46:10,935 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:46:10,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:10" (1/1) ... [2022-11-20 11:46:10,954 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:10" (1/1) ... [2022-11-20 11:46:10,998 INFO L138 Inliner]: procedures = 25, calls = 51, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 250 [2022-11-20 11:46:10,998 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:46:10,999 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:46:10,999 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:46:10,999 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:46:11,012 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:10" (1/1) ... [2022-11-20 11:46:11,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:10" (1/1) ... [2022-11-20 11:46:11,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:10" (1/1) ... [2022-11-20 11:46:11,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:10" (1/1) ... [2022-11-20 11:46:11,027 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:10" (1/1) ... [2022-11-20 11:46:11,033 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:10" (1/1) ... [2022-11-20 11:46:11,036 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:10" (1/1) ... [2022-11-20 11:46:11,038 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:10" (1/1) ... [2022-11-20 11:46:11,042 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:46:11,043 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:46:11,043 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:46:11,043 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:46:11,044 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:10" (1/1) ... [2022-11-20 11:46:11,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:46:11,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67694758-3b00-4080-ab18-38460f666b30/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:46:11,099 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67694758-3b00-4080-ab18-38460f666b30/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:46:11,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67694758-3b00-4080-ab18-38460f666b30/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:46:11,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:46:11,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:46:11,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:46:11,163 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:46:11,163 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 11:46:11,165 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 11:46:11,166 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 11:46:11,166 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 11:46:11,167 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 11:46:11,167 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 11:46:11,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:46:11,167 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 11:46:11,168 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 11:46:11,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:46:11,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:46:11,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:46:11,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:46:11,170 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 11:46:11,401 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:46:11,404 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:46:12,055 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:46:12,745 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:46:12,746 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-20 11:46:12,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:46:12 BoogieIcfgContainer [2022-11-20 11:46:12,750 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:46:12,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:46:12,756 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:46:12,760 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:46:12,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:46:10" (1/3) ... [2022-11-20 11:46:12,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a983448 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:46:12, skipping insertion in model container [2022-11-20 11:46:12,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:10" (2/3) ... [2022-11-20 11:46:12,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a983448 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:46:12, skipping insertion in model container [2022-11-20 11:46:12,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:46:12" (3/3) ... [2022-11-20 11:46:12,768 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum-alt.wvr.c [2022-11-20 11:46:12,779 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:46:12,793 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:46:12,794 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2022-11-20 11:46:12,794 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:46:13,073 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 11:46:13,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 187 places, 189 transitions, 402 flow [2022-11-20 11:46:13,258 INFO L130 PetriNetUnfolder]: 12/186 cut-off events. [2022-11-20 11:46:13,258 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 11:46:13,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 186 events. 12/186 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 248 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 138. Up to 2 conditions per place. [2022-11-20 11:46:13,268 INFO L82 GeneralOperation]: Start removeDead. Operand has 187 places, 189 transitions, 402 flow [2022-11-20 11:46:13,276 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 164 places, 165 transitions, 345 flow [2022-11-20 11:46:13,287 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:46:13,296 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;@182f0ae1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:46:13,296 INFO L358 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2022-11-20 11:46:13,356 INFO L130 PetriNetUnfolder]: 3/63 cut-off events. [2022-11-20 11:46:13,356 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:46:13,357 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:46:13,357 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] [2022-11-20 11:46:13,359 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-20 11:46:13,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:46:13,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1126068733, now seen corresponding path program 1 times [2022-11-20 11:46:13,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:46:13,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835451567] [2022-11-20 11:46:13,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:46:13,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:46:13,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:13,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:46:13,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:46:13,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835451567] [2022-11-20 11:46:13,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835451567] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:46:13,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:46:13,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:46:13,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911719913] [2022-11-20 11:46:13,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:46:13,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:46:13,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:46:13,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:46:13,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:46:13,963 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 189 [2022-11-20 11:46:13,968 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 165 transitions, 345 flow. Second operand has 4 states, 4 states have (on average 142.5) internal successors, (570), 4 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:13,968 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:46:13,969 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 189 [2022-11-20 11:46:13,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:46:16,228 INFO L130 PetriNetUnfolder]: 1911/4061 cut-off events. [2022-11-20 11:46:16,229 INFO L131 PetriNetUnfolder]: For 600/610 co-relation queries the response was YES. [2022-11-20 11:46:16,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6930 conditions, 4061 events. 1911/4061 cut-off events. For 600/610 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 29332 event pairs, 910 based on Foata normal form. 384/2093 useless extension candidates. Maximal degree in co-relation 3281. Up to 1265 conditions per place. [2022-11-20 11:46:16,296 INFO L137 encePairwiseOnDemand]: 170/189 looper letters, 56 selfloop transitions, 4 changer transitions 3/180 dead transitions. [2022-11-20 11:46:16,296 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 180 transitions, 510 flow [2022-11-20 11:46:16,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:46:16,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:46:16,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 791 transitions. [2022-11-20 11:46:16,325 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.837037037037037 [2022-11-20 11:46:16,326 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 791 transitions. [2022-11-20 11:46:16,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 791 transitions. [2022-11-20 11:46:16,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:46:16,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 791 transitions. [2022-11-20 11:46:16,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 158.2) internal successors, (791), 5 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:16,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:16,356 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:16,359 INFO L175 Difference]: Start difference. First operand has 164 places, 165 transitions, 345 flow. Second operand 5 states and 791 transitions. [2022-11-20 11:46:16,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 180 transitions, 510 flow [2022-11-20 11:46:16,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 180 transitions, 492 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 11:46:16,377 INFO L231 Difference]: Finished difference. Result has 160 places, 152 transitions, 334 flow [2022-11-20 11:46:16,380 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=334, PETRI_PLACES=160, PETRI_TRANSITIONS=152} [2022-11-20 11:46:16,388 INFO L288 CegarLoopForPetriNet]: 164 programPoint places, -4 predicate places. [2022-11-20 11:46:16,388 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 152 transitions, 334 flow [2022-11-20 11:46:16,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 142.5) internal successors, (570), 4 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:16,389 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:46:16,390 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] [2022-11-20 11:46:16,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:46:16,390 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-20 11:46:16,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:46:16,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1889659338, now seen corresponding path program 1 times [2022-11-20 11:46:16,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:46:16,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490371660] [2022-11-20 11:46:16,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:46:16,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:46:16,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:16,684 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:46:16,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:46:16,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490371660] [2022-11-20 11:46:16,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490371660] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:46:16,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203567576] [2022-11-20 11:46:16,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:46:16,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:46:16,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67694758-3b00-4080-ab18-38460f666b30/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:46:16,691 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67694758-3b00-4080-ab18-38460f666b30/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:46:16,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67694758-3b00-4080-ab18-38460f666b30/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:46:16,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:16,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:46:16,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:46:17,054 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:46:17,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:46:17,182 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:46:17,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203567576] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:46:17,195 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:46:17,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 11:46:17,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873331969] [2022-11-20 11:46:17,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:46:17,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:46:17,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:46:17,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:46:17,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:46:17,205 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 189 [2022-11-20 11:46:17,221 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 152 transitions, 334 flow. Second operand has 12 states, 12 states have (on average 143.66666666666666) internal successors, (1724), 12 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:17,222 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:46:17,222 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 189 [2022-11-20 11:46:17,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:46:21,766 INFO L130 PetriNetUnfolder]: 4776/10071 cut-off events. [2022-11-20 11:46:21,766 INFO L131 PetriNetUnfolder]: For 431/456 co-relation queries the response was YES. [2022-11-20 11:46:21,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16801 conditions, 10071 events. 4776/10071 cut-off events. For 431/456 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 80047 event pairs, 2275 based on Foata normal form. 3/4209 useless extension candidates. Maximal degree in co-relation 13396. Up to 1260 conditions per place. [2022-11-20 11:46:21,879 INFO L137 encePairwiseOnDemand]: 182/189 looper letters, 128 selfloop transitions, 18 changer transitions 0/263 dead transitions. [2022-11-20 11:46:21,880 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 263 transitions, 894 flow [2022-11-20 11:46:21,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 11:46:21,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 11:46:21,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2687 transitions. [2022-11-20 11:46:21,888 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7898295120517342 [2022-11-20 11:46:21,888 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2687 transitions. [2022-11-20 11:46:21,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2687 transitions. [2022-11-20 11:46:21,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:46:21,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2687 transitions. [2022-11-20 11:46:21,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 149.27777777777777) internal successors, (2687), 18 states have internal predecessors, (2687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:21,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 189.0) internal successors, (3591), 19 states have internal predecessors, (3591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:21,910 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 189.0) internal successors, (3591), 19 states have internal predecessors, (3591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:21,910 INFO L175 Difference]: Start difference. First operand has 160 places, 152 transitions, 334 flow. Second operand 18 states and 2687 transitions. [2022-11-20 11:46:21,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 263 transitions, 894 flow [2022-11-20 11:46:21,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 263 transitions, 892 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:46:21,918 INFO L231 Difference]: Finished difference. Result has 177 places, 164 transitions, 438 flow [2022-11-20 11:46:21,919 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=438, PETRI_PLACES=177, PETRI_TRANSITIONS=164} [2022-11-20 11:46:21,920 INFO L288 CegarLoopForPetriNet]: 164 programPoint places, 13 predicate places. [2022-11-20 11:46:21,920 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 164 transitions, 438 flow [2022-11-20 11:46:21,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 143.66666666666666) internal successors, (1724), 12 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:21,922 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:46:21,923 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] [2022-11-20 11:46:21,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67694758-3b00-4080-ab18-38460f666b30/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:46:22,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67694758-3b00-4080-ab18-38460f666b30/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:46:22,130 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-20 11:46:22,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:46:22,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1550103327, now seen corresponding path program 1 times [2022-11-20 11:46:22,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:46:22,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724797762] [2022-11-20 11:46:22,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:46:22,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:46:22,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:22,410 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 11:46:22,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:46:22,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724797762] [2022-11-20 11:46:22,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724797762] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:46:22,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068447592] [2022-11-20 11:46:22,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:46:22,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:46:22,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67694758-3b00-4080-ab18-38460f666b30/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:46:22,420 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67694758-3b00-4080-ab18-38460f666b30/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:46:22,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67694758-3b00-4080-ab18-38460f666b30/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:46:22,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:22,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:46:22,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:46:22,736 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 11:46:22,738 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:46:22,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068447592] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:46:22,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:46:22,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 11:46:22,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635450658] [2022-11-20 11:46:22,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:46:22,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:46:22,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:46:22,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:46:22,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:46:22,746 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 189 [2022-11-20 11:46:22,750 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 164 transitions, 438 flow. Second operand has 6 states, 6 states have (on average 143.33333333333334) internal successors, (860), 6 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:22,750 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:46:22,751 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 189 [2022-11-20 11:46:22,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:46:26,658 INFO L130 PetriNetUnfolder]: 4776/10067 cut-off events. [2022-11-20 11:46:26,658 INFO L131 PetriNetUnfolder]: For 467/492 co-relation queries the response was YES. [2022-11-20 11:46:26,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16819 conditions, 10067 events. 4776/10067 cut-off events. For 467/492 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 79748 event pairs, 2275 based on Foata normal form. 4/4206 useless extension candidates. Maximal degree in co-relation 13439. Up to 5024 conditions per place. [2022-11-20 11:46:26,754 INFO L137 encePairwiseOnDemand]: 184/189 looper letters, 57 selfloop transitions, 11 changer transitions 0/185 dead transitions. [2022-11-20 11:46:26,754 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 185 transitions, 605 flow [2022-11-20 11:46:26,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:46:26,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:46:26,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1047 transitions. [2022-11-20 11:46:26,757 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7913832199546486 [2022-11-20 11:46:26,758 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1047 transitions. [2022-11-20 11:46:26,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1047 transitions. [2022-11-20 11:46:26,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:46:26,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1047 transitions. [2022-11-20 11:46:26,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 149.57142857142858) internal successors, (1047), 7 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:26,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 189.0) internal successors, (1512), 8 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:26,767 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 189.0) internal successors, (1512), 8 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:26,767 INFO L175 Difference]: Start difference. First operand has 177 places, 164 transitions, 438 flow. Second operand 7 states and 1047 transitions. [2022-11-20 11:46:26,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 185 transitions, 605 flow [2022-11-20 11:46:26,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 185 transitions, 573 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-20 11:46:26,774 INFO L231 Difference]: Finished difference. Result has 173 places, 160 transitions, 401 flow [2022-11-20 11:46:26,775 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=401, PETRI_PLACES=173, PETRI_TRANSITIONS=160} [2022-11-20 11:46:26,776 INFO L288 CegarLoopForPetriNet]: 164 programPoint places, 9 predicate places. [2022-11-20 11:46:26,776 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 160 transitions, 401 flow [2022-11-20 11:46:26,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 143.33333333333334) internal successors, (860), 6 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:26,777 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:46:26,777 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] [2022-11-20 11:46:26,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67694758-3b00-4080-ab18-38460f666b30/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:46:26,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67694758-3b00-4080-ab18-38460f666b30/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:46:26,984 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-20 11:46:26,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:46:26,985 INFO L85 PathProgramCache]: Analyzing trace with hash -2139722390, now seen corresponding path program 1 times [2022-11-20 11:46:26,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:46:26,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211071590] [2022-11-20 11:46:26,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:46:26,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:46:27,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:27,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:46:27,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:46:27,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211071590] [2022-11-20 11:46:27,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211071590] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:46:27,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:46:27,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:46:27,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257924200] [2022-11-20 11:46:27,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:46:27,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:46:27,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:46:27,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:46:27,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:46:27,235 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 189 [2022-11-20 11:46:27,237 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 160 transitions, 401 flow. Second operand has 7 states, 7 states have (on average 133.14285714285714) internal successors, (932), 7 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:27,237 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:46:27,237 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 189 [2022-11-20 11:46:27,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:46:31,535 INFO L130 PetriNetUnfolder]: 7388/15344 cut-off events. [2022-11-20 11:46:31,535 INFO L131 PetriNetUnfolder]: For 364/379 co-relation queries the response was YES. [2022-11-20 11:46:31,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26248 conditions, 15344 events. 7388/15344 cut-off events. For 364/379 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 134272 event pairs, 4539 based on Foata normal form. 0/7101 useless extension candidates. Maximal degree in co-relation 24168. Up to 9477 conditions per place. [2022-11-20 11:46:31,690 INFO L137 encePairwiseOnDemand]: 180/189 looper letters, 79 selfloop transitions, 8 changer transitions 0/197 dead transitions. [2022-11-20 11:46:31,691 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 197 transitions, 658 flow [2022-11-20 11:46:31,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:46:31,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 11:46:31,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1130 transitions. [2022-11-20 11:46:31,696 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7473544973544973 [2022-11-20 11:46:31,696 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1130 transitions. [2022-11-20 11:46:31,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1130 transitions. [2022-11-20 11:46:31,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:46:31,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1130 transitions. [2022-11-20 11:46:31,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 141.25) internal successors, (1130), 8 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:31,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 189.0) internal successors, (1701), 9 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:31,705 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 189.0) internal successors, (1701), 9 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:31,705 INFO L175 Difference]: Start difference. First operand has 173 places, 160 transitions, 401 flow. Second operand 8 states and 1130 transitions. [2022-11-20 11:46:31,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 197 transitions, 658 flow [2022-11-20 11:46:31,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 197 transitions, 644 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 11:46:31,713 INFO L231 Difference]: Finished difference. Result has 178 places, 162 transitions, 419 flow [2022-11-20 11:46:31,714 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=419, PETRI_PLACES=178, PETRI_TRANSITIONS=162} [2022-11-20 11:46:31,716 INFO L288 CegarLoopForPetriNet]: 164 programPoint places, 14 predicate places. [2022-11-20 11:46:31,716 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 162 transitions, 419 flow [2022-11-20 11:46:31,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 133.14285714285714) internal successors, (932), 7 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:31,717 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:46:31,717 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] [2022-11-20 11:46:31,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:46:31,718 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-20 11:46:31,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:46:31,719 INFO L85 PathProgramCache]: Analyzing trace with hash -2003004642, now seen corresponding path program 1 times [2022-11-20 11:46:31,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:46:31,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054171714] [2022-11-20 11:46:31,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:46:31,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:46:31,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:32,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:46:32,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:46:32,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054171714] [2022-11-20 11:46:32,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054171714] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:46:32,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:46:32,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 11:46:32,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274006953] [2022-11-20 11:46:32,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:46:32,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:46:32,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:46:32,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:46:32,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:46:32,173 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 189 [2022-11-20 11:46:32,175 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 162 transitions, 419 flow. Second operand has 10 states, 10 states have (on average 111.7) internal successors, (1117), 10 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:32,175 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:46:32,175 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 189 [2022-11-20 11:46:32,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:46:36,541 INFO L130 PetriNetUnfolder]: 8183/16827 cut-off events. [2022-11-20 11:46:36,541 INFO L131 PetriNetUnfolder]: For 1402/1432 co-relation queries the response was YES. [2022-11-20 11:46:36,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30374 conditions, 16827 events. 8183/16827 cut-off events. For 1402/1432 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 147246 event pairs, 6773 based on Foata normal form. 30/9557 useless extension candidates. Maximal degree in co-relation 29665. Up to 11615 conditions per place. [2022-11-20 11:46:36,717 INFO L137 encePairwiseOnDemand]: 176/189 looper letters, 84 selfloop transitions, 12 changer transitions 2/195 dead transitions. [2022-11-20 11:46:36,717 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 195 transitions, 690 flow [2022-11-20 11:46:36,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 11:46:36,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-20 11:46:36,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1401 transitions. [2022-11-20 11:46:36,723 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6177248677248677 [2022-11-20 11:46:36,724 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1401 transitions. [2022-11-20 11:46:36,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1401 transitions. [2022-11-20 11:46:36,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:46:36,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1401 transitions. [2022-11-20 11:46:36,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 116.75) internal successors, (1401), 12 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:36,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 189.0) internal successors, (2457), 13 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:36,737 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 189.0) internal successors, (2457), 13 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:36,737 INFO L175 Difference]: Start difference. First operand has 178 places, 162 transitions, 419 flow. Second operand 12 states and 1401 transitions. [2022-11-20 11:46:36,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 195 transitions, 690 flow [2022-11-20 11:46:36,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 195 transitions, 680 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 11:46:36,747 INFO L231 Difference]: Finished difference. Result has 190 places, 166 transitions, 460 flow [2022-11-20 11:46:36,748 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=460, PETRI_PLACES=190, PETRI_TRANSITIONS=166} [2022-11-20 11:46:36,749 INFO L288 CegarLoopForPetriNet]: 164 programPoint places, 26 predicate places. [2022-11-20 11:46:36,749 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 166 transitions, 460 flow [2022-11-20 11:46:36,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 111.7) internal successors, (1117), 10 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:36,750 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:46:36,750 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] [2022-11-20 11:46:36,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:46:36,751 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-20 11:46:36,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:46:36,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1306317362, now seen corresponding path program 1 times [2022-11-20 11:46:36,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:46:36,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663419957] [2022-11-20 11:46:36,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:46:36,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:46:36,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:37,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:46:37,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:46:37,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663419957] [2022-11-20 11:46:37,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663419957] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:46:37,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980407591] [2022-11-20 11:46:37,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:46:37,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:46:37,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67694758-3b00-4080-ab18-38460f666b30/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:46:37,812 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67694758-3b00-4080-ab18-38460f666b30/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:46:37,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67694758-3b00-4080-ab18-38460f666b30/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:46:38,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:38,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-20 11:46:38,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:46:38,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 11:46:38,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:46:38,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-20 11:46:38,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:46:38,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:46:38,907 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_107 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_107) |c_ULTIMATE.start_main_#t~ret12#1.base|) |c_ULTIMATE.start_main_#t~ret12#1.offset|) 9223372039002259456))) is different from false [2022-11-20 11:46:39,137 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:46:39,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2022-11-20 11:46:39,151 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:46:39,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 36 [2022-11-20 11:46:39,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:46:39,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980407591] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:46:39,463 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:46:39,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 34 [2022-11-20 11:46:39,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651092028] [2022-11-20 11:46:39,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:46:39,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-20 11:46:39,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:46:39,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-20 11:46:39,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=995, Unknown=7, NotChecked=64, Total=1190 [2022-11-20 11:46:39,473 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 189 [2022-11-20 11:46:39,480 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 166 transitions, 460 flow. Second operand has 35 states, 35 states have (on average 117.14285714285714) internal successors, (4100), 35 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:39,480 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:46:39,481 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 189 [2022-11-20 11:46:39,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:46:48,734 INFO L130 PetriNetUnfolder]: 15481/28368 cut-off events. [2022-11-20 11:46:48,734 INFO L131 PetriNetUnfolder]: For 768/824 co-relation queries the response was YES. [2022-11-20 11:46:48,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51255 conditions, 28368 events. 15481/28368 cut-off events. For 768/824 co-relation queries the response was YES. Maximal size of possible extension queue 960. Compared 253360 event pairs, 6457 based on Foata normal form. 0/13619 useless extension candidates. Maximal degree in co-relation 50708. Up to 14466 conditions per place. [2022-11-20 11:46:49,012 INFO L137 encePairwiseOnDemand]: 166/189 looper letters, 107 selfloop transitions, 32 changer transitions 0/239 dead transitions. [2022-11-20 11:46:49,013 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 239 transitions, 902 flow [2022-11-20 11:46:49,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 11:46:49,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-20 11:46:49,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2319 transitions. [2022-11-20 11:46:49,020 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.64578111946533 [2022-11-20 11:46:49,020 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2319 transitions. [2022-11-20 11:46:49,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2319 transitions. [2022-11-20 11:46:49,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:46:49,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2319 transitions. [2022-11-20 11:46:49,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 122.05263157894737) internal successors, (2319), 19 states have internal predecessors, (2319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:49,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 189.0) internal successors, (3780), 20 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:49,038 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 189.0) internal successors, (3780), 20 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:49,038 INFO L175 Difference]: Start difference. First operand has 190 places, 166 transitions, 460 flow. Second operand 19 states and 2319 transitions. [2022-11-20 11:46:49,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 239 transitions, 902 flow [2022-11-20 11:46:49,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 239 transitions, 887 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-20 11:46:49,048 INFO L231 Difference]: Finished difference. Result has 212 places, 193 transitions, 635 flow [2022-11-20 11:46:49,048 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=635, PETRI_PLACES=212, PETRI_TRANSITIONS=193} [2022-11-20 11:46:49,049 INFO L288 CegarLoopForPetriNet]: 164 programPoint places, 48 predicate places. [2022-11-20 11:46:49,049 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 193 transitions, 635 flow [2022-11-20 11:46:49,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 117.14285714285714) internal successors, (4100), 35 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:49,052 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:46:49,052 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] [2022-11-20 11:46:49,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67694758-3b00-4080-ab18-38460f666b30/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:46:49,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67694758-3b00-4080-ab18-38460f666b30/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:46:49,266 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-20 11:46:49,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:46:49,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1306317359, now seen corresponding path program 1 times [2022-11-20 11:46:49,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:46:49,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2495085] [2022-11-20 11:46:49,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:46:49,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:46:49,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:50,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:46:50,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:46:50,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2495085] [2022-11-20 11:46:50,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2495085] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:46:50,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41430592] [2022-11-20 11:46:50,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:46:50,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:46:50,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67694758-3b00-4080-ab18-38460f666b30/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:46:50,352 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67694758-3b00-4080-ab18-38460f666b30/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:46:50,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67694758-3b00-4080-ab18-38460f666b30/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:46:50,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:50,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-20 11:46:50,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:46:50,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 11:46:50,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:46:50,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:46:51,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:46:51,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:46:51,198 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_134 (Array Int Int))) (<= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_134) |c_ULTIMATE.start_main_#t~ret12#1.base|) |c_ULTIMATE.start_main_#t~ret12#1.offset|) 4294967295)) is different from false [2022-11-20 11:46:51,269 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_134 (Array Int Int))) (<= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_134) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 4294967295)) is different from false [2022-11-20 11:46:51,326 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:46:51,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2022-11-20 11:46:51,337 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:46:51,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 32 [2022-11-20 11:46:51,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-20 11:46:51,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41430592] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:46:51,584 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:46:51,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 34 [2022-11-20 11:46:51,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13730257] [2022-11-20 11:46:51,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:46:51,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-20 11:46:51,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:46:51,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-20 11:46:51,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=935, Unknown=9, NotChecked=126, Total=1190 [2022-11-20 11:46:51,590 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 189 [2022-11-20 11:46:51,596 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 193 transitions, 635 flow. Second operand has 35 states, 35 states have (on average 117.14285714285714) internal successors, (4100), 35 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:51,596 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:46:51,597 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 189 [2022-11-20 11:46:51,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:46:59,943 INFO L130 PetriNetUnfolder]: 16014/29664 cut-off events. [2022-11-20 11:46:59,943 INFO L131 PetriNetUnfolder]: For 3822/4218 co-relation queries the response was YES. [2022-11-20 11:47:00,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57226 conditions, 29664 events. 16014/29664 cut-off events. For 3822/4218 co-relation queries the response was YES. Maximal size of possible extension queue 1027. Compared 270427 event pairs, 6810 based on Foata normal form. 2/14629 useless extension candidates. Maximal degree in co-relation 56649. Up to 15311 conditions per place. [2022-11-20 11:47:00,253 INFO L137 encePairwiseOnDemand]: 167/189 looper letters, 109 selfloop transitions, 35 changer transitions 0/244 dead transitions. [2022-11-20 11:47:00,253 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 244 transitions, 1070 flow [2022-11-20 11:47:00,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 11:47:00,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 11:47:00,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2203 transitions. [2022-11-20 11:47:00,259 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6475602586713698 [2022-11-20 11:47:00,259 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2203 transitions. [2022-11-20 11:47:00,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2203 transitions. [2022-11-20 11:47:00,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:47:00,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2203 transitions. [2022-11-20 11:47:00,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 122.38888888888889) internal successors, (2203), 18 states have internal predecessors, (2203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:00,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 189.0) internal successors, (3591), 19 states have internal predecessors, (3591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:00,272 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 189.0) internal successors, (3591), 19 states have internal predecessors, (3591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:00,273 INFO L175 Difference]: Start difference. First operand has 212 places, 193 transitions, 635 flow. Second operand 18 states and 2203 transitions. [2022-11-20 11:47:00,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 244 transitions, 1070 flow [2022-11-20 11:47:00,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 244 transitions, 1059 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-20 11:47:00,286 INFO L231 Difference]: Finished difference. Result has 225 places, 199 transitions, 738 flow [2022-11-20 11:47:00,287 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=620, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=738, PETRI_PLACES=225, PETRI_TRANSITIONS=199} [2022-11-20 11:47:00,288 INFO L288 CegarLoopForPetriNet]: 164 programPoint places, 61 predicate places. [2022-11-20 11:47:00,288 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 199 transitions, 738 flow [2022-11-20 11:47:00,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 117.14285714285714) internal successors, (4100), 35 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:00,290 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:47:00,290 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] [2022-11-20 11:47:00,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67694758-3b00-4080-ab18-38460f666b30/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-20 11:47:00,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67694758-3b00-4080-ab18-38460f666b30/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 11:47:00,496 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-20 11:47:00,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:00,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1306317357, now seen corresponding path program 1 times [2022-11-20 11:47:00,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:00,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763242390] [2022-11-20 11:47:00,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:00,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:00,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:00,847 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 11:47:00,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:00,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763242390] [2022-11-20 11:47:00,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763242390] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:00,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:47:00,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:47:00,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379365983] [2022-11-20 11:47:00,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:00,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:47:00,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:00,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:47:00,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:47:00,852 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 189 [2022-11-20 11:47:00,853 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 199 transitions, 738 flow. Second operand has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:00,853 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:47:00,853 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 189 [2022-11-20 11:47:00,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:47:05,940 INFO L130 PetriNetUnfolder]: 7839/20837 cut-off events. [2022-11-20 11:47:05,940 INFO L131 PetriNetUnfolder]: For 8694/8790 co-relation queries the response was YES. [2022-11-20 11:47:06,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38794 conditions, 20837 events. 7839/20837 cut-off events. For 8694/8790 co-relation queries the response was YES. Maximal size of possible extension queue 917. Compared 230806 event pairs, 1704 based on Foata normal form. 1/12168 useless extension candidates. Maximal degree in co-relation 38500. Up to 6886 conditions per place. [2022-11-20 11:47:06,164 INFO L137 encePairwiseOnDemand]: 185/189 looper letters, 44 selfloop transitions, 2 changer transitions 0/215 dead transitions. [2022-11-20 11:47:06,164 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 215 transitions, 877 flow [2022-11-20 11:47:06,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:47:06,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:47:06,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 492 transitions. [2022-11-20 11:47:06,166 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8677248677248677 [2022-11-20 11:47:06,166 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 492 transitions. [2022-11-20 11:47:06,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 492 transitions. [2022-11-20 11:47:06,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:47:06,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 492 transitions. [2022-11-20 11:47:06,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:06,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:06,170 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:06,170 INFO L175 Difference]: Start difference. First operand has 225 places, 199 transitions, 738 flow. Second operand 3 states and 492 transitions. [2022-11-20 11:47:06,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 215 transitions, 877 flow [2022-11-20 11:47:06,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 215 transitions, 841 flow, removed 3 selfloop flow, removed 14 redundant places. [2022-11-20 11:47:06,209 INFO L231 Difference]: Finished difference. Result has 214 places, 198 transitions, 710 flow [2022-11-20 11:47:06,210 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=696, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=710, PETRI_PLACES=214, PETRI_TRANSITIONS=198} [2022-11-20 11:47:06,210 INFO L288 CegarLoopForPetriNet]: 164 programPoint places, 50 predicate places. [2022-11-20 11:47:06,211 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 198 transitions, 710 flow [2022-11-20 11:47:06,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:06,211 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:47:06,211 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:06,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:47:06,212 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-20 11:47:06,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:06,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1800110977, now seen corresponding path program 1 times [2022-11-20 11:47:06,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:06,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945058264] [2022-11-20 11:47:06,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:06,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:06,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:06,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:47:06,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:06,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945058264] [2022-11-20 11:47:06,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945058264] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:06,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:47:06,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 11:47:06,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127619514] [2022-11-20 11:47:06,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:06,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:47:06,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:06,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:47:06,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:47:06,550 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 189 [2022-11-20 11:47:06,552 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 198 transitions, 710 flow. Second operand has 10 states, 10 states have (on average 112.8) internal successors, (1128), 10 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:06,552 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:47:06,552 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 189 [2022-11-20 11:47:06,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand