./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_09-ptrmunge_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcfc36ac-8fac-4b8d-9ce7-028c8f0777cb/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcfc36ac-8fac-4b8d-9ce7-028c8f0777cb/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcfc36ac-8fac-4b8d-9ce7-028c8f0777cb/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcfc36ac-8fac-4b8d-9ce7-028c8f0777cb/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_09-ptrmunge_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcfc36ac-8fac-4b8d-9ce7-028c8f0777cb/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcfc36ac-8fac-4b8d-9ce7-028c8f0777cb/bin/uautomizer-tPACEb0tL8 --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 7b88fee59ad03447f68c116aa52c40e006cc633d8116aa4d446048afd18fa64f --- 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-e04fb08 [2022-11-16 11:30:25,103 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:30:25,105 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:30:25,133 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:30:25,136 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:30:25,141 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:30:25,145 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:30:25,152 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:30:25,157 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:30:25,161 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:30:25,162 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:30:25,163 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:30:25,164 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:30:25,166 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:30:25,170 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:30:25,171 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:30:25,173 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:30:25,180 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:30:25,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:30:25,184 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:30:25,187 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:30:25,188 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:30:25,191 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:30:25,192 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:30:25,197 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:30:25,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:30:25,202 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:30:25,203 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:30:25,204 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:30:25,205 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:30:25,206 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:30:25,208 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:30:25,210 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:30:25,211 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:30:25,212 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:30:25,212 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:30:25,213 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:30:25,213 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:30:25,213 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:30:25,214 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:30:25,215 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:30:25,216 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcfc36ac-8fac-4b8d-9ce7-028c8f0777cb/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:30:25,263 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:30:25,263 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:30:25,264 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:30:25,264 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:30:25,265 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:30:25,266 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:30:25,266 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:30:25,267 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:30:25,267 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:30:25,267 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:30:25,268 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:30:25,269 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:30:25,269 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:30:25,269 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:30:25,269 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:30:25,270 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:30:25,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:30:25,270 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:30:25,270 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:30:25,271 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:30:25,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:30:25,271 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:30:25,271 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:30:25,272 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:30:25,272 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:30:25,272 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:30:25,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:30:25,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:30:25,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:30:25,273 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:30:25,273 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:30:25,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:30:25,274 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:30:25,274 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:30:25,275 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:30:25,275 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_bcfc36ac-8fac-4b8d-9ce7-028c8f0777cb/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcfc36ac-8fac-4b8d-9ce7-028c8f0777cb/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7b88fee59ad03447f68c116aa52c40e006cc633d8116aa4d446048afd18fa64f [2022-11-16 11:30:25,594 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:30:25,617 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:30:25,620 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:30:25,621 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:30:25,622 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:30:25,623 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcfc36ac-8fac-4b8d-9ce7-028c8f0777cb/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/goblint-regression/28-race_reach_09-ptrmunge_racing.i [2022-11-16 11:30:25,687 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcfc36ac-8fac-4b8d-9ce7-028c8f0777cb/bin/uautomizer-tPACEb0tL8/data/e808b5a94/172530b45c3f4ef093ec5cf9ac9cae46/FLAG7de2e16dc [2022-11-16 11:30:26,256 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:30:26,256 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcfc36ac-8fac-4b8d-9ce7-028c8f0777cb/sv-benchmarks/c/goblint-regression/28-race_reach_09-ptrmunge_racing.i [2022-11-16 11:30:26,275 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcfc36ac-8fac-4b8d-9ce7-028c8f0777cb/bin/uautomizer-tPACEb0tL8/data/e808b5a94/172530b45c3f4ef093ec5cf9ac9cae46/FLAG7de2e16dc [2022-11-16 11:30:26,537 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcfc36ac-8fac-4b8d-9ce7-028c8f0777cb/bin/uautomizer-tPACEb0tL8/data/e808b5a94/172530b45c3f4ef093ec5cf9ac9cae46 [2022-11-16 11:30:26,541 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:30:26,545 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:30:26,547 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:30:26,547 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:30:26,551 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:30:26,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:30:26" (1/1) ... [2022-11-16 11:30:26,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a1303bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:30:26, skipping insertion in model container [2022-11-16 11:30:26,553 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:30:26" (1/1) ... [2022-11-16 11:30:26,561 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:30:26,611 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:30:27,041 WARN L229 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_bcfc36ac-8fac-4b8d-9ce7-028c8f0777cb/sv-benchmarks/c/goblint-regression/28-race_reach_09-ptrmunge_racing.i[30176,30189] [2022-11-16 11:30:27,084 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:30:27,099 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:30:27,148 WARN L229 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_bcfc36ac-8fac-4b8d-9ce7-028c8f0777cb/sv-benchmarks/c/goblint-regression/28-race_reach_09-ptrmunge_racing.i[30176,30189] [2022-11-16 11:30:27,171 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:30:27,211 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:30:27,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:30:27 WrapperNode [2022-11-16 11:30:27,212 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:30:27,213 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:30:27,213 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:30:27,213 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:30:27,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:30:27" (1/1) ... [2022-11-16 11:30:27,252 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:30:27" (1/1) ... [2022-11-16 11:30:27,296 INFO L138 Inliner]: procedures = 172, calls = 50, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 232 [2022-11-16 11:30:27,297 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:30:27,298 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:30:27,298 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:30:27,298 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:30:27,307 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:30:27" (1/1) ... [2022-11-16 11:30:27,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:30:27" (1/1) ... [2022-11-16 11:30:27,322 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:30:27" (1/1) ... [2022-11-16 11:30:27,325 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:30:27" (1/1) ... [2022-11-16 11:30:27,331 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:30:27" (1/1) ... [2022-11-16 11:30:27,351 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:30:27" (1/1) ... [2022-11-16 11:30:27,352 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:30:27" (1/1) ... [2022-11-16 11:30:27,361 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:30:27" (1/1) ... [2022-11-16 11:30:27,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:30:27,365 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:30:27,365 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:30:27,365 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:30:27,366 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:30:27" (1/1) ... [2022-11-16 11:30:27,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:30:27,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcfc36ac-8fac-4b8d-9ce7-028c8f0777cb/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:30:27,403 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcfc36ac-8fac-4b8d-9ce7-028c8f0777cb/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:30:27,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcfc36ac-8fac-4b8d-9ce7-028c8f0777cb/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:30:27,442 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:30:27,442 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-11-16 11:30:27,442 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-11-16 11:30:27,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:30:27,443 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 11:30:27,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:30:27,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:30:27,443 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-11-16 11:30:27,443 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-11-16 11:30:27,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:30:27,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:30:27,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:30:27,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:30:27,445 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:30:27,617 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:30:27,619 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:30:28,178 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:30:28,188 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:30:28,188 INFO L300 CfgBuilder]: Removed 24 assume(true) statements. [2022-11-16 11:30:28,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:30:28 BoogieIcfgContainer [2022-11-16 11:30:28,191 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:30:28,193 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:30:28,194 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:30:28,212 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:30:28,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:30:26" (1/3) ... [2022-11-16 11:30:28,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21464d6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:30:28, skipping insertion in model container [2022-11-16 11:30:28,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:30:27" (2/3) ... [2022-11-16 11:30:28,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21464d6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:30:28, skipping insertion in model container [2022-11-16 11:30:28,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:30:28" (3/3) ... [2022-11-16 11:30:28,217 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_09-ptrmunge_racing.i [2022-11-16 11:30:28,237 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:30:28,248 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:30:28,248 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-16 11:30:28,248 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:30:28,370 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-16 11:30:28,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 228 places, 255 transitions, 532 flow [2022-11-16 11:30:28,582 INFO L130 PetriNetUnfolder]: 58/453 cut-off events. [2022-11-16 11:30:28,583 INFO L131 PetriNetUnfolder]: For 8/12 co-relation queries the response was YES. [2022-11-16 11:30:28,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 453 events. 58/453 cut-off events. For 8/12 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2026 event pairs, 0 based on Foata normal form. 0/359 useless extension candidates. Maximal degree in co-relation 241. Up to 8 conditions per place. [2022-11-16 11:30:28,594 INFO L82 GeneralOperation]: Start removeDead. Operand has 228 places, 255 transitions, 532 flow [2022-11-16 11:30:28,602 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 228 places, 255 transitions, 532 flow [2022-11-16 11:30:28,613 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:30:28,620 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;@20764722, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:30:28,620 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-11-16 11:30:28,640 INFO L130 PetriNetUnfolder]: 4/71 cut-off events. [2022-11-16 11:30:28,648 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:30:28,649 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:30:28,649 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:30:28,650 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 11:30:28,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:30:28,655 INFO L85 PathProgramCache]: Analyzing trace with hash -402872925, now seen corresponding path program 1 times [2022-11-16 11:30:28,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:30:28,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810497203] [2022-11-16 11:30:28,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:30:28,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:30:28,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:30:29,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:30:29,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:30:29,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810497203] [2022-11-16 11:30:29,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810497203] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:30:29,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:30:29,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:30:29,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639934114] [2022-11-16 11:30:29,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:30:29,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:30:29,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:30:29,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:30:29,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:30:29,208 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 255 [2022-11-16 11:30:29,212 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 255 transitions, 532 flow. Second operand has 4 states, 4 states have (on average 210.75) internal successors, (843), 4 states have internal predecessors, (843), 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) [2022-11-16 11:30:29,212 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:30:29,213 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 255 [2022-11-16 11:30:29,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:30:29,402 INFO L130 PetriNetUnfolder]: 8/316 cut-off events. [2022-11-16 11:30:29,402 INFO L131 PetriNetUnfolder]: For 37/88 co-relation queries the response was YES. [2022-11-16 11:30:29,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 356 conditions, 316 events. 8/316 cut-off events. For 37/88 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1071 event pairs, 0 based on Foata normal form. 120/397 useless extension candidates. Maximal degree in co-relation 219. Up to 15 conditions per place. [2022-11-16 11:30:29,416 INFO L137 encePairwiseOnDemand]: 222/255 looper letters, 14 selfloop transitions, 4 changer transitions 0/227 dead transitions. [2022-11-16 11:30:29,416 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 227 transitions, 512 flow [2022-11-16 11:30:29,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:30:29,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:30:29,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1126 transitions. [2022-11-16 11:30:29,434 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8831372549019608 [2022-11-16 11:30:29,435 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1126 transitions. [2022-11-16 11:30:29,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1126 transitions. [2022-11-16 11:30:29,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:30:29,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1126 transitions. [2022-11-16 11:30:29,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 225.2) internal successors, (1126), 5 states have internal predecessors, (1126), 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) [2022-11-16 11:30:29,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 255.0) internal successors, (1530), 6 states have internal predecessors, (1530), 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) [2022-11-16 11:30:29,464 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 255.0) internal successors, (1530), 6 states have internal predecessors, (1530), 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) [2022-11-16 11:30:29,466 INFO L175 Difference]: Start difference. First operand has 228 places, 255 transitions, 532 flow. Second operand 5 states and 1126 transitions. [2022-11-16 11:30:29,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 227 transitions, 512 flow [2022-11-16 11:30:29,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 227 transitions, 512 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:30:29,479 INFO L231 Difference]: Finished difference. Result has 229 places, 225 transitions, 484 flow [2022-11-16 11:30:29,507 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=484, PETRI_PLACES=229, PETRI_TRANSITIONS=225} [2022-11-16 11:30:29,513 INFO L288 CegarLoopForPetriNet]: 228 programPoint places, 1 predicate places. [2022-11-16 11:30:29,514 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 225 transitions, 484 flow [2022-11-16 11:30:29,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 210.75) internal successors, (843), 4 states have internal predecessors, (843), 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) [2022-11-16 11:30:29,515 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:30:29,516 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:30:29,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:30:29,517 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 11:30:29,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:30:29,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1237452701, now seen corresponding path program 1 times [2022-11-16 11:30:29,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:30:29,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833018889] [2022-11-16 11:30:29,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:30:29,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:30:29,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:30:29,546 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:30:29,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:30:29,587 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:30:29,587 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:30:29,589 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 26 remaining) [2022-11-16 11:30:29,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 26 remaining) [2022-11-16 11:30:29,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 26 remaining) [2022-11-16 11:30:29,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 26 remaining) [2022-11-16 11:30:29,597 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 26 remaining) [2022-11-16 11:30:29,597 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 26 remaining) [2022-11-16 11:30:29,598 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 26 remaining) [2022-11-16 11:30:29,598 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 26 remaining) [2022-11-16 11:30:29,599 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 26 remaining) [2022-11-16 11:30:29,600 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 26 remaining) [2022-11-16 11:30:29,601 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 26 remaining) [2022-11-16 11:30:29,602 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 26 remaining) [2022-11-16 11:30:29,603 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 26 remaining) [2022-11-16 11:30:29,603 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 26 remaining) [2022-11-16 11:30:29,604 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 26 remaining) [2022-11-16 11:30:29,604 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 26 remaining) [2022-11-16 11:30:29,605 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 26 remaining) [2022-11-16 11:30:29,605 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 26 remaining) [2022-11-16 11:30:29,606 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 26 remaining) [2022-11-16 11:30:29,606 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 26 remaining) [2022-11-16 11:30:29,606 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 26 remaining) [2022-11-16 11:30:29,606 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 26 remaining) [2022-11-16 11:30:29,607 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 26 remaining) [2022-11-16 11:30:29,607 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 26 remaining) [2022-11-16 11:30:29,608 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 26 remaining) [2022-11-16 11:30:29,608 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 26 remaining) [2022-11-16 11:30:29,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:30:29,609 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-16 11:30:29,612 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:30:29,613 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-16 11:30:29,738 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-11-16 11:30:29,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 352 places, 403 transitions, 854 flow [2022-11-16 11:30:30,176 INFO L130 PetriNetUnfolder]: 197/1354 cut-off events. [2022-11-16 11:30:30,177 INFO L131 PetriNetUnfolder]: For 72/78 co-relation queries the response was YES. [2022-11-16 11:30:30,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1451 conditions, 1354 events. 197/1354 cut-off events. For 72/78 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 8642 event pairs, 1 based on Foata normal form. 0/1062 useless extension candidates. Maximal degree in co-relation 820. Up to 32 conditions per place. [2022-11-16 11:30:30,207 INFO L82 GeneralOperation]: Start removeDead. Operand has 352 places, 403 transitions, 854 flow [2022-11-16 11:30:30,233 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 352 places, 403 transitions, 854 flow [2022-11-16 11:30:30,235 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:30:30,237 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;@20764722, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:30:30,237 INFO L358 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2022-11-16 11:30:30,246 INFO L130 PetriNetUnfolder]: 4/71 cut-off events. [2022-11-16 11:30:30,247 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:30:30,247 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:30:30,247 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] [2022-11-16 11:30:30,247 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2022-11-16 11:30:30,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:30:30,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1806181966, now seen corresponding path program 1 times [2022-11-16 11:30:30,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:30:30,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867365250] [2022-11-16 11:30:30,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:30:30,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:30:30,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:30:30,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:30:30,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:30:30,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867365250] [2022-11-16 11:30:30,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867365250] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:30:30,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:30:30,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:30:30,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772382304] [2022-11-16 11:30:30,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:30:30,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:30:30,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:30:30,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:30:30,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:30:30,394 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 327 out of 403 [2022-11-16 11:30:30,397 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 403 transitions, 854 flow. Second operand has 4 states, 4 states have (on average 328.75) internal successors, (1315), 4 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:30:30,397 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:30:30,398 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 327 of 403 [2022-11-16 11:30:30,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:30:30,895 INFO L130 PetriNetUnfolder]: 60/1052 cut-off events. [2022-11-16 11:30:30,895 INFO L131 PetriNetUnfolder]: For 270/592 co-relation queries the response was YES. [2022-11-16 11:30:30,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1235 conditions, 1052 events. 60/1052 cut-off events. For 270/592 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 6574 event pairs, 2 based on Foata normal form. 861/1757 useless extension candidates. Maximal degree in co-relation 751. Up to 85 conditions per place. [2022-11-16 11:30:30,931 INFO L137 encePairwiseOnDemand]: 348/403 looper letters, 27 selfloop transitions, 4 changer transitions 0/358 dead transitions. [2022-11-16 11:30:30,932 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 358 transitions, 826 flow [2022-11-16 11:30:30,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:30:30,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:30:30,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1751 transitions. [2022-11-16 11:30:30,969 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8689826302729529 [2022-11-16 11:30:30,969 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1751 transitions. [2022-11-16 11:30:30,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1751 transitions. [2022-11-16 11:30:30,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:30:30,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1751 transitions. [2022-11-16 11:30:30,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 350.2) internal successors, (1751), 5 states have internal predecessors, (1751), 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) [2022-11-16 11:30:30,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 403.0) internal successors, (2418), 6 states have internal predecessors, (2418), 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) [2022-11-16 11:30:30,980 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 403.0) internal successors, (2418), 6 states have internal predecessors, (2418), 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) [2022-11-16 11:30:30,980 INFO L175 Difference]: Start difference. First operand has 352 places, 403 transitions, 854 flow. Second operand 5 states and 1751 transitions. [2022-11-16 11:30:30,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 358 transitions, 826 flow [2022-11-16 11:30:30,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 358 transitions, 826 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:30:30,993 INFO L231 Difference]: Finished difference. Result has 355 places, 354 transitions, 782 flow [2022-11-16 11:30:30,994 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=782, PETRI_PLACES=355, PETRI_TRANSITIONS=354} [2022-11-16 11:30:30,995 INFO L288 CegarLoopForPetriNet]: 352 programPoint places, 3 predicate places. [2022-11-16 11:30:30,995 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 354 transitions, 782 flow [2022-11-16 11:30:30,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 328.75) internal successors, (1315), 4 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:30:30,996 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:30:30,997 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:30:30,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:30:30,997 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2022-11-16 11:30:30,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:30:30,998 INFO L85 PathProgramCache]: Analyzing trace with hash 481760480, now seen corresponding path program 1 times [2022-11-16 11:30:30,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:30:30,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848119040] [2022-11-16 11:30:30,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:30:30,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:30:31,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:30:31,128 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:30:31,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:30:31,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848119040] [2022-11-16 11:30:31,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848119040] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:30:31,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:30:31,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:30:31,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608493865] [2022-11-16 11:30:31,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:30:31,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:30:31,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:30:31,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:30:31,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:30:31,137 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 327 out of 403 [2022-11-16 11:30:31,139 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 354 transitions, 782 flow. Second operand has 4 states, 4 states have (on average 330.75) internal successors, (1323), 4 states have internal predecessors, (1323), 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) [2022-11-16 11:30:31,139 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:30:31,139 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 327 of 403 [2022-11-16 11:30:31,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:30:31,591 INFO L130 PetriNetUnfolder]: 60/1051 cut-off events. [2022-11-16 11:30:31,591 INFO L131 PetriNetUnfolder]: For 275/582 co-relation queries the response was YES. [2022-11-16 11:30:31,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1250 conditions, 1051 events. 60/1051 cut-off events. For 275/582 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 6585 event pairs, 2 based on Foata normal form. 13/912 useless extension candidates. Maximal degree in co-relation 1170. Up to 74 conditions per place. [2022-11-16 11:30:31,623 INFO L137 encePairwiseOnDemand]: 397/403 looper letters, 19 selfloop transitions, 8 changer transitions 0/354 dead transitions. [2022-11-16 11:30:31,623 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 354 transitions, 834 flow [2022-11-16 11:30:31,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:30:31,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:30:31,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1660 transitions. [2022-11-16 11:30:31,628 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8238213399503722 [2022-11-16 11:30:31,631 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1660 transitions. [2022-11-16 11:30:31,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1660 transitions. [2022-11-16 11:30:31,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:30:31,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1660 transitions. [2022-11-16 11:30:31,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 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) [2022-11-16 11:30:31,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 403.0) internal successors, (2418), 6 states have internal predecessors, (2418), 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) [2022-11-16 11:30:31,642 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 403.0) internal successors, (2418), 6 states have internal predecessors, (2418), 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) [2022-11-16 11:30:31,643 INFO L175 Difference]: Start difference. First operand has 355 places, 354 transitions, 782 flow. Second operand 5 states and 1660 transitions. [2022-11-16 11:30:31,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 354 transitions, 834 flow [2022-11-16 11:30:31,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 354 transitions, 832 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:30:31,657 INFO L231 Difference]: Finished difference. Result has 358 places, 354 transitions, 800 flow [2022-11-16 11:30:31,657 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=800, PETRI_PLACES=358, PETRI_TRANSITIONS=354} [2022-11-16 11:30:31,660 INFO L288 CegarLoopForPetriNet]: 352 programPoint places, 6 predicate places. [2022-11-16 11:30:31,660 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 354 transitions, 800 flow [2022-11-16 11:30:31,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 330.75) internal successors, (1323), 4 states have internal predecessors, (1323), 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) [2022-11-16 11:30:31,661 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:30:31,662 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:30:31,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:30:31,662 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2022-11-16 11:30:31,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:30:31,667 INFO L85 PathProgramCache]: Analyzing trace with hash 2049673883, now seen corresponding path program 1 times [2022-11-16 11:30:31,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:30:31,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855177457] [2022-11-16 11:30:31,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:30:31,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:30:31,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:30:31,848 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:30:31,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:30:31,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855177457] [2022-11-16 11:30:31,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855177457] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:30:31,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610597428] [2022-11-16 11:30:31,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:30:31,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:30:31,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcfc36ac-8fac-4b8d-9ce7-028c8f0777cb/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:30:31,855 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcfc36ac-8fac-4b8d-9ce7-028c8f0777cb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:30:31,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcfc36ac-8fac-4b8d-9ce7-028c8f0777cb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:30:31,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:30:31,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:30:31,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:30:32,111 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:30:32,111 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:30:32,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610597428] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:30:32,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:30:32,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:30:32,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102820420] [2022-11-16 11:30:32,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:30:32,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:30:32,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:30:32,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:30:32,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:30:32,117 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 327 out of 403 [2022-11-16 11:30:32,119 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 354 transitions, 800 flow. Second operand has 6 states, 6 states have (on average 329.6666666666667) internal successors, (1978), 6 states have internal predecessors, (1978), 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) [2022-11-16 11:30:32,119 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:30:32,120 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 327 of 403 [2022-11-16 11:30:32,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:30:32,524 INFO L130 PetriNetUnfolder]: 60/1050 cut-off events. [2022-11-16 11:30:32,524 INFO L131 PetriNetUnfolder]: For 281/573 co-relation queries the response was YES. [2022-11-16 11:30:32,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1259 conditions, 1050 events. 60/1050 cut-off events. For 281/573 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 6549 event pairs, 2 based on Foata normal form. 11/909 useless extension candidates. Maximal degree in co-relation 767. Up to 77 conditions per place. [2022-11-16 11:30:32,555 INFO L137 encePairwiseOnDemand]: 398/403 looper letters, 23 selfloop transitions, 6 changer transitions 0/356 dead transitions. [2022-11-16 11:30:32,556 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 356 transitions, 860 flow [2022-11-16 11:30:32,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:30:32,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:30:32,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2319 transitions. [2022-11-16 11:30:32,561 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8220489188231124 [2022-11-16 11:30:32,561 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2319 transitions. [2022-11-16 11:30:32,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2319 transitions. [2022-11-16 11:30:32,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:30:32,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2319 transitions. [2022-11-16 11:30:32,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 331.2857142857143) internal successors, (2319), 7 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) [2022-11-16 11:30:32,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 403.0) internal successors, (3224), 8 states have internal predecessors, (3224), 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) [2022-11-16 11:30:32,576 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 403.0) internal successors, (3224), 8 states have internal predecessors, (3224), 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) [2022-11-16 11:30:32,576 INFO L175 Difference]: Start difference. First operand has 358 places, 354 transitions, 800 flow. Second operand 7 states and 2319 transitions. [2022-11-16 11:30:32,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 356 transitions, 860 flow [2022-11-16 11:30:32,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 356 transitions, 848 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:30:32,585 INFO L231 Difference]: Finished difference. Result has 360 places, 353 transitions, 796 flow [2022-11-16 11:30:32,586 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=784, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=796, PETRI_PLACES=360, PETRI_TRANSITIONS=353} [2022-11-16 11:30:32,588 INFO L288 CegarLoopForPetriNet]: 352 programPoint places, 8 predicate places. [2022-11-16 11:30:32,588 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 353 transitions, 796 flow [2022-11-16 11:30:32,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 329.6666666666667) internal successors, (1978), 6 states have internal predecessors, (1978), 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) [2022-11-16 11:30:32,590 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:30:32,590 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] [2022-11-16 11:30:32,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcfc36ac-8fac-4b8d-9ce7-028c8f0777cb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:30:32,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcfc36ac-8fac-4b8d-9ce7-028c8f0777cb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:30:32,796 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2022-11-16 11:30:32,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:30:32,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1322918445, now seen corresponding path program 1 times [2022-11-16 11:30:32,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:30:32,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851103596] [2022-11-16 11:30:32,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:30:32,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:30:32,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:30:33,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:30:33,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:30:33,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851103596] [2022-11-16 11:30:33,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851103596] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:30:33,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:30:33,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:30:33,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984892645] [2022-11-16 11:30:33,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:30:33,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:30:33,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:30:33,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:30:33,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:30:33,197 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 403 [2022-11-16 11:30:33,200 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 353 transitions, 796 flow. Second operand has 11 states, 11 states have (on average 273.27272727272725) internal successors, (3006), 11 states have internal predecessors, (3006), 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) [2022-11-16 11:30:33,200 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:30:33,200 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 403 [2022-11-16 11:30:33,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand