./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/unroll-5.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_a73b358a-482d-49c1-ae2d-c9fc9bb67070/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a73b358a-482d-49c1-ae2d-c9fc9bb67070/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_a73b358a-482d-49c1-ae2d-c9fc9bb67070/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a73b358a-482d-49c1-ae2d-c9fc9bb67070/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/unroll-5.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a73b358a-482d-49c1-ae2d-c9fc9bb67070/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_a73b358a-482d-49c1-ae2d-c9fc9bb67070/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 c8ce32899aa465c1eaa89b234122d94aaf792bb347295ccb743670e04bba6b8e --- 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 09:34:12,062 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:34:12,065 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:34:12,101 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:34:12,103 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:34:12,106 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:34:12,107 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:34:12,109 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:34:12,111 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:34:12,112 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:34:12,113 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:34:12,114 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:34:12,115 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:34:12,116 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:34:12,117 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:34:12,122 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:34:12,124 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:34:12,127 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:34:12,129 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:34:12,135 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:34:12,140 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:34:12,141 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:34:12,142 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:34:12,143 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:34:12,147 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:34:12,147 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:34:12,147 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:34:12,148 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:34:12,149 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:34:12,150 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:34:12,150 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:34:12,151 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:34:12,152 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:34:12,153 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:34:12,159 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:34:12,159 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:34:12,160 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:34:12,160 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:34:12,161 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:34:12,164 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:34:12,165 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:34:12,165 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a73b358a-482d-49c1-ae2d-c9fc9bb67070/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 09:34:12,207 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:34:12,207 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:34:12,208 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:34:12,208 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:34:12,209 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 09:34:12,210 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 09:34:12,210 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:34:12,211 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:34:12,211 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:34:12,211 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:34:12,212 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 09:34:12,212 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 09:34:12,213 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 09:34:12,213 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 09:34:12,213 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:34:12,213 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 09:34:12,213 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 09:34:12,214 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 09:34:12,214 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 09:34:12,214 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 09:34:12,214 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 09:34:12,214 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:34:12,215 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 09:34:12,215 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:34:12,215 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:34:12,215 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 09:34:12,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:34:12,216 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:34:12,216 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 09:34:12,217 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 09:34:12,217 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 09:34:12,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 09:34:12,217 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 09:34:12,218 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 09:34:12,218 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 09:34:12,218 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_a73b358a-482d-49c1-ae2d-c9fc9bb67070/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a73b358a-482d-49c1-ae2d-c9fc9bb67070/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8ce32899aa465c1eaa89b234122d94aaf792bb347295ccb743670e04bba6b8e [2022-11-20 09:34:12,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:34:12,567 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:34:12,570 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:34:12,571 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:34:12,572 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:34:12,573 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a73b358a-482d-49c1-ae2d-c9fc9bb67070/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/unroll-5.wvr.c [2022-11-20 09:34:15,601 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:34:15,907 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:34:15,908 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a73b358a-482d-49c1-ae2d-c9fc9bb67070/sv-benchmarks/c/weaver/unroll-5.wvr.c [2022-11-20 09:34:15,920 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a73b358a-482d-49c1-ae2d-c9fc9bb67070/bin/uautomizer-ug76WZFUDN/data/719485c2f/e8f8305f4b7140f1855b2267b1b5a917/FLAGc1a5e3c13 [2022-11-20 09:34:15,942 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a73b358a-482d-49c1-ae2d-c9fc9bb67070/bin/uautomizer-ug76WZFUDN/data/719485c2f/e8f8305f4b7140f1855b2267b1b5a917 [2022-11-20 09:34:15,946 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:34:15,950 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:34:15,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:34:15,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:34:15,956 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:34:15,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:34:15" (1/1) ... [2022-11-20 09:34:15,958 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5afa14c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:15, skipping insertion in model container [2022-11-20 09:34:15,959 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:34:15" (1/1) ... [2022-11-20 09:34:15,968 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:34:16,001 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:34:16,248 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_a73b358a-482d-49c1-ae2d-c9fc9bb67070/sv-benchmarks/c/weaver/unroll-5.wvr.c[2644,2657] [2022-11-20 09:34:16,259 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:34:16,278 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 09:34:16,325 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_a73b358a-482d-49c1-ae2d-c9fc9bb67070/sv-benchmarks/c/weaver/unroll-5.wvr.c[2644,2657] [2022-11-20 09:34:16,329 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:34:16,347 INFO L208 MainTranslator]: Completed translation [2022-11-20 09:34:16,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:16 WrapperNode [2022-11-20 09:34:16,348 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 09:34:16,349 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 09:34:16,349 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 09:34:16,350 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 09:34:16,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:16" (1/1) ... [2022-11-20 09:34:16,381 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:16" (1/1) ... [2022-11-20 09:34:16,427 INFO L138 Inliner]: procedures = 24, calls = 38, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 166 [2022-11-20 09:34:16,428 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 09:34:16,430 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 09:34:16,430 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 09:34:16,430 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 09:34:16,440 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:16" (1/1) ... [2022-11-20 09:34:16,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:16" (1/1) ... [2022-11-20 09:34:16,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:16" (1/1) ... [2022-11-20 09:34:16,457 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:16" (1/1) ... [2022-11-20 09:34:16,462 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:16" (1/1) ... [2022-11-20 09:34:16,481 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:16" (1/1) ... [2022-11-20 09:34:16,482 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:16" (1/1) ... [2022-11-20 09:34:16,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:16" (1/1) ... [2022-11-20 09:34:16,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 09:34:16,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 09:34:16,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 09:34:16,487 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 09:34:16,488 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:16" (1/1) ... [2022-11-20 09:34:16,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:34:16,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a73b358a-482d-49c1-ae2d-c9fc9bb67070/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:34:16,526 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a73b358a-482d-49c1-ae2d-c9fc9bb67070/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 09:34:16,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a73b358a-482d-49c1-ae2d-c9fc9bb67070/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 09:34:16,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 09:34:16,581 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 09:34:16,581 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 09:34:16,581 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 09:34:16,582 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 09:34:16,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 09:34:16,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 09:34:16,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 09:34:16,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 09:34:16,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 09:34:16,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 09:34:16,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 09:34:16,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 09:34:16,585 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 09:34:16,746 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 09:34:16,749 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 09:34:17,226 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 09:34:17,236 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 09:34:17,236 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-20 09:34:17,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:34:17 BoogieIcfgContainer [2022-11-20 09:34:17,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 09:34:17,242 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 09:34:17,242 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 09:34:17,245 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 09:34:17,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:34:15" (1/3) ... [2022-11-20 09:34:17,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70a8ac41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:34:17, skipping insertion in model container [2022-11-20 09:34:17,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:16" (2/3) ... [2022-11-20 09:34:17,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70a8ac41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:34:17, skipping insertion in model container [2022-11-20 09:34:17,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:34:17" (3/3) ... [2022-11-20 09:34:17,249 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-5.wvr.c [2022-11-20 09:34:17,258 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 09:34:17,269 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 09:34:17,270 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 09:34:17,270 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 09:34:17,427 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 09:34:17,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 216 transitions, 448 flow [2022-11-20 09:34:17,639 INFO L130 PetriNetUnfolder]: 17/214 cut-off events. [2022-11-20 09:34:17,640 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 09:34:17,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 214 events. 17/214 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 186 event pairs, 0 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 114. Up to 2 conditions per place. [2022-11-20 09:34:17,649 INFO L82 GeneralOperation]: Start removeDead. Operand has 206 places, 216 transitions, 448 flow [2022-11-20 09:34:17,659 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 68 transitions, 136 flow [2022-11-20 09:34:17,684 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:34:17,691 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;@5221d1f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:34:17,692 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-20 09:34:17,727 INFO L130 PetriNetUnfolder]: 3/62 cut-off events. [2022-11-20 09:34:17,727 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 09:34:17,728 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:34:17,731 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] [2022-11-20 09:34:17,732 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 09:34:17,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:34:17,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1451259149, now seen corresponding path program 1 times [2022-11-20 09:34:17,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:34:17,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914568468] [2022-11-20 09:34:17,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:34:17,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:34:18,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:18,360 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 09:34:18,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:34:18,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914568468] [2022-11-20 09:34:18,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914568468] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:34:18,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:34:18,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:34:18,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954454112] [2022-11-20 09:34:18,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:34:18,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:34:18,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:34:18,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:34:18,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:34:18,447 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 216 [2022-11-20 09:34:18,457 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 68 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 186.5) internal successors, (746), 4 states have internal predecessors, (746), 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 09:34:18,457 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:34:18,458 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 216 [2022-11-20 09:34:18,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:34:18,544 INFO L130 PetriNetUnfolder]: 1/74 cut-off events. [2022-11-20 09:34:18,544 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 09:34:18,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 74 events. 1/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 3/72 useless extension candidates. Maximal degree in co-relation 0. Up to 12 conditions per place. [2022-11-20 09:34:18,548 INFO L137 encePairwiseOnDemand]: 207/216 looper letters, 14 selfloop transitions, 4 changer transitions 3/72 dead transitions. [2022-11-20 09:34:18,548 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 72 transitions, 180 flow [2022-11-20 09:34:18,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:34:18,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 09:34:18,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 948 transitions. [2022-11-20 09:34:18,577 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8777777777777778 [2022-11-20 09:34:18,579 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 948 transitions. [2022-11-20 09:34:18,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 948 transitions. [2022-11-20 09:34:18,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:34:18,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 948 transitions. [2022-11-20 09:34:18,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 189.6) internal successors, (948), 5 states have internal predecessors, (948), 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 09:34:18,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 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 09:34:18,613 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 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 09:34:18,615 INFO L175 Difference]: Start difference. First operand has 65 places, 68 transitions, 136 flow. Second operand 5 states and 948 transitions. [2022-11-20 09:34:18,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 72 transitions, 180 flow [2022-11-20 09:34:18,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 72 transitions, 180 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 09:34:18,627 INFO L231 Difference]: Finished difference. Result has 72 places, 65 transitions, 154 flow [2022-11-20 09:34:18,629 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=154, PETRI_PLACES=72, PETRI_TRANSITIONS=65} [2022-11-20 09:34:18,636 INFO L288 CegarLoopForPetriNet]: 65 programPoint places, 7 predicate places. [2022-11-20 09:34:18,637 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 65 transitions, 154 flow [2022-11-20 09:34:18,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 186.5) internal successors, (746), 4 states have internal predecessors, (746), 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 09:34:18,638 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:34:18,640 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:34:18,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 09:34:18,641 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 09:34:18,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:34:18,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1571306216, now seen corresponding path program 1 times [2022-11-20 09:34:18,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:34:18,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505930500] [2022-11-20 09:34:18,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:34:18,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:34:18,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:18,934 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 09:34:18,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:34:18,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505930500] [2022-11-20 09:34:18,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505930500] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:34:18,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454025948] [2022-11-20 09:34:18,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:34:18,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:34:18,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a73b358a-482d-49c1-ae2d-c9fc9bb67070/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:34:18,948 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a73b358a-482d-49c1-ae2d-c9fc9bb67070/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:34:18,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a73b358a-482d-49c1-ae2d-c9fc9bb67070/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 09:34:19,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:19,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 09:34:19,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:34:19,168 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 09:34:19,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:34:19,235 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 09:34:19,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454025948] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:34:19,236 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:34:19,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 09:34:19,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770803441] [2022-11-20 09:34:19,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:34:19,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 09:34:19,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:34:19,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 09:34:19,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 09:34:19,243 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 216 [2022-11-20 09:34:19,247 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 65 transitions, 154 flow. Second operand has 12 states, 12 states have (on average 187.66666666666666) internal successors, (2252), 12 states have internal predecessors, (2252), 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 09:34:19,247 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:34:19,247 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 216 [2022-11-20 09:34:19,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:34:19,451 INFO L130 PetriNetUnfolder]: 1/100 cut-off events. [2022-11-20 09:34:19,452 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-11-20 09:34:19,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 100 events. 1/100 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 0 based on Foata normal form. 3/103 useless extension candidates. Maximal degree in co-relation 88. Up to 11 conditions per place. [2022-11-20 09:34:19,453 INFO L137 encePairwiseOnDemand]: 209/216 looper letters, 23 selfloop transitions, 18 changer transitions 0/92 dead transitions. [2022-11-20 09:34:19,453 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 92 transitions, 312 flow [2022-11-20 09:34:19,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 09:34:19,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 09:34:19,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3374 transitions. [2022-11-20 09:34:19,488 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.867798353909465 [2022-11-20 09:34:19,488 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3374 transitions. [2022-11-20 09:34:19,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3374 transitions. [2022-11-20 09:34:19,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:34:19,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3374 transitions. [2022-11-20 09:34:19,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 187.44444444444446) internal successors, (3374), 18 states have internal predecessors, (3374), 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 09:34:19,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 216.0) internal successors, (4104), 19 states have internal predecessors, (4104), 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 09:34:19,515 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 216.0) internal successors, (4104), 19 states have internal predecessors, (4104), 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 09:34:19,515 INFO L175 Difference]: Start difference. First operand has 72 places, 65 transitions, 154 flow. Second operand 18 states and 3374 transitions. [2022-11-20 09:34:19,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 92 transitions, 312 flow [2022-11-20 09:34:19,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 92 transitions, 310 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 09:34:19,520 INFO L231 Difference]: Finished difference. Result has 89 places, 77 transitions, 258 flow [2022-11-20 09:34:19,520 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=258, PETRI_PLACES=89, PETRI_TRANSITIONS=77} [2022-11-20 09:34:19,521 INFO L288 CegarLoopForPetriNet]: 65 programPoint places, 24 predicate places. [2022-11-20 09:34:19,521 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 77 transitions, 258 flow [2022-11-20 09:34:19,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 187.66666666666666) internal successors, (2252), 12 states have internal predecessors, (2252), 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 09:34:19,523 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:34:19,523 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:34:19,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a73b358a-482d-49c1-ae2d-c9fc9bb67070/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 09:34:19,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a73b358a-482d-49c1-ae2d-c9fc9bb67070/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:34:19,730 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 09:34:19,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:34:19,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1465852920, now seen corresponding path program 1 times [2022-11-20 09:34:19,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:34:19,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283723623] [2022-11-20 09:34:19,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:34:19,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:34:19,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:19,887 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 09:34:19,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:34:19,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283723623] [2022-11-20 09:34:19,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283723623] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:34:19,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85604429] [2022-11-20 09:34:19,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:34:19,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:34:19,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a73b358a-482d-49c1-ae2d-c9fc9bb67070/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:34:19,890 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a73b358a-482d-49c1-ae2d-c9fc9bb67070/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:34:19,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a73b358a-482d-49c1-ae2d-c9fc9bb67070/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 09:34:19,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:19,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 09:34:19,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:34:20,067 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 09:34:20,068 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:34:20,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85604429] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:34:20,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:34:20,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 09:34:20,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151646429] [2022-11-20 09:34:20,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:34:20,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:34:20,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:34:20,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:34:20,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:34:20,079 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 216 [2022-11-20 09:34:20,081 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 77 transitions, 258 flow. Second operand has 6 states, 6 states have (on average 187.33333333333334) internal successors, (1124), 6 states have internal predecessors, (1124), 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 09:34:20,081 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:34:20,082 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 216 [2022-11-20 09:34:20,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:34:20,185 INFO L130 PetriNetUnfolder]: 1/96 cut-off events. [2022-11-20 09:34:20,185 INFO L131 PetriNetUnfolder]: For 47/47 co-relation queries the response was YES. [2022-11-20 09:34:20,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 96 events. 1/96 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 2 event pairs, 0 based on Foata normal form. 4/100 useless extension candidates. Maximal degree in co-relation 72. Up to 17 conditions per place. [2022-11-20 09:34:20,186 INFO L137 encePairwiseOnDemand]: 211/216 looper letters, 15 selfloop transitions, 11 changer transitions 0/77 dead transitions. [2022-11-20 09:34:20,186 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 77 transitions, 293 flow [2022-11-20 09:34:20,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:34:20,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 09:34:20,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1313 transitions. [2022-11-20 09:34:20,191 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8683862433862434 [2022-11-20 09:34:20,191 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1313 transitions. [2022-11-20 09:34:20,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1313 transitions. [2022-11-20 09:34:20,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:34:20,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1313 transitions. [2022-11-20 09:34:20,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 187.57142857142858) internal successors, (1313), 7 states have internal predecessors, (1313), 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 09:34:20,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 216.0) internal successors, (1728), 8 states have internal predecessors, (1728), 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 09:34:20,201 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 216.0) internal successors, (1728), 8 states have internal predecessors, (1728), 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 09:34:20,202 INFO L175 Difference]: Start difference. First operand has 89 places, 77 transitions, 258 flow. Second operand 7 states and 1313 transitions. [2022-11-20 09:34:20,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 77 transitions, 293 flow [2022-11-20 09:34:20,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 77 transitions, 261 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-20 09:34:20,207 INFO L231 Difference]: Finished difference. Result has 85 places, 73 transitions, 221 flow [2022-11-20 09:34:20,208 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=221, PETRI_PLACES=85, PETRI_TRANSITIONS=73} [2022-11-20 09:34:20,211 INFO L288 CegarLoopForPetriNet]: 65 programPoint places, 20 predicate places. [2022-11-20 09:34:20,211 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 73 transitions, 221 flow [2022-11-20 09:34:20,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 187.33333333333334) internal successors, (1124), 6 states have internal predecessors, (1124), 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 09:34:20,212 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:34:20,212 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:34:20,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a73b358a-482d-49c1-ae2d-c9fc9bb67070/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 09:34:20,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a73b358a-482d-49c1-ae2d-c9fc9bb67070/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-20 09:34:20,419 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 09:34:20,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:34:20,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1063622195, now seen corresponding path program 2 times [2022-11-20 09:34:20,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:34:20,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474832273] [2022-11-20 09:34:20,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:34:20,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:34:20,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:20,682 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:34:20,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:34:20,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474832273] [2022-11-20 09:34:20,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474832273] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:34:20,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259790573] [2022-11-20 09:34:20,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:34:20,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:34:20,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a73b358a-482d-49c1-ae2d-c9fc9bb67070/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:34:20,685 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a73b358a-482d-49c1-ae2d-c9fc9bb67070/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:34:20,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a73b358a-482d-49c1-ae2d-c9fc9bb67070/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 09:34:20,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 09:34:20,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:34:20,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 09:34:20,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:34:21,018 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 09:34:21,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:34:21,206 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 09:34:21,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259790573] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:34:21,206 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:34:21,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-20 09:34:21,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151220662] [2022-11-20 09:34:21,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:34:21,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 09:34:21,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:34:21,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 09:34:21,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-20 09:34:21,214 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 216 [2022-11-20 09:34:21,217 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 73 transitions, 221 flow. Second operand has 18 states, 18 states have (on average 171.72222222222223) internal successors, (3091), 18 states have internal predecessors, (3091), 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 09:34:21,217 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:34:21,218 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 216 [2022-11-20 09:34:21,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:34:21,803 INFO L130 PetriNetUnfolder]: 1/106 cut-off events. [2022-11-20 09:34:21,803 INFO L131 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2022-11-20 09:34:21,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 106 events. 1/106 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 2/108 useless extension candidates. Maximal degree in co-relation 121. Up to 7 conditions per place. [2022-11-20 09:34:21,806 INFO L137 encePairwiseOnDemand]: 205/216 looper letters, 0 selfloop transitions, 0 changer transitions 96/96 dead transitions. [2022-11-20 09:34:21,807 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 96 transitions, 396 flow [2022-11-20 09:34:21,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 09:34:21,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-20 09:34:21,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4090 transitions. [2022-11-20 09:34:21,816 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7889660493827161 [2022-11-20 09:34:21,817 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4090 transitions. [2022-11-20 09:34:21,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4090 transitions. [2022-11-20 09:34:21,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:34:21,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4090 transitions. [2022-11-20 09:34:21,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 170.41666666666666) internal successors, (4090), 24 states have internal predecessors, (4090), 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 09:34:21,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 216.0) internal successors, (5400), 25 states have internal predecessors, (5400), 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 09:34:21,844 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 216.0) internal successors, (5400), 25 states have internal predecessors, (5400), 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 09:34:21,845 INFO L175 Difference]: Start difference. First operand has 85 places, 73 transitions, 221 flow. Second operand 24 states and 4090 transitions. [2022-11-20 09:34:21,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 96 transitions, 396 flow [2022-11-20 09:34:21,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 96 transitions, 371 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-20 09:34:21,852 INFO L231 Difference]: Finished difference. Result has 98 places, 0 transitions, 0 flow [2022-11-20 09:34:21,853 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=0, PETRI_PLACES=98, PETRI_TRANSITIONS=0} [2022-11-20 09:34:21,855 INFO L288 CegarLoopForPetriNet]: 65 programPoint places, 33 predicate places. [2022-11-20 09:34:21,855 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 0 transitions, 0 flow [2022-11-20 09:34:21,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 171.72222222222223) internal successors, (3091), 18 states have internal predecessors, (3091), 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 09:34:21,859 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2022-11-20 09:34:21,860 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2022-11-20 09:34:21,860 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-11-20 09:34:21,861 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-11-20 09:34:21,874 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a73b358a-482d-49c1-ae2d-c9fc9bb67070/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-20 09:34:22,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a73b358a-482d-49c1-ae2d-c9fc9bb67070/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:34:22,067 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2022-11-20 09:34:22,069 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 09:34:22,070 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 09:34:22,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 09:34:22 BasicIcfg [2022-11-20 09:34:22,075 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 09:34:22,075 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 09:34:22,075 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 09:34:22,076 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 09:34:22,076 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:34:17" (3/4) ... [2022-11-20 09:34:22,079 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 09:34:22,086 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-20 09:34:22,086 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-20 09:34:22,093 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2022-11-20 09:34:22,093 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-20 09:34:22,093 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 09:34:22,096 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 09:34:22,134 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a73b358a-482d-49c1-ae2d-c9fc9bb67070/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 09:34:22,134 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 09:34:22,135 INFO L158 Benchmark]: Toolchain (without parser) took 6184.92ms. Allocated memory was 142.6MB in the beginning and 199.2MB in the end (delta: 56.6MB). Free memory was 111.4MB in the beginning and 90.5MB in the end (delta: 21.0MB). Peak memory consumption was 80.4MB. Max. memory is 16.1GB. [2022-11-20 09:34:22,135 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 142.6MB. Free memory is still 86.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 09:34:22,136 INFO L158 Benchmark]: CACSL2BoogieTranslator took 396.59ms. Allocated memory is still 142.6MB. Free memory was 111.4MB in the beginning and 99.5MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 09:34:22,136 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.56ms. Allocated memory is still 142.6MB. Free memory was 99.5MB in the beginning and 97.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 09:34:22,136 INFO L158 Benchmark]: Boogie Preprocessor took 56.69ms. Allocated memory is still 142.6MB. Free memory was 97.5MB in the beginning and 95.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 09:34:22,137 INFO L158 Benchmark]: RCFGBuilder took 752.19ms. Allocated memory is still 142.6MB. Free memory was 95.9MB in the beginning and 77.6MB in the end (delta: 18.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-20 09:34:22,137 INFO L158 Benchmark]: TraceAbstraction took 4833.23ms. Allocated memory was 142.6MB in the beginning and 199.2MB in the end (delta: 56.6MB). Free memory was 77.0MB in the beginning and 93.6MB in the end (delta: -16.6MB). Peak memory consumption was 40.6MB. Max. memory is 16.1GB. [2022-11-20 09:34:22,138 INFO L158 Benchmark]: Witness Printer took 58.97ms. Allocated memory is still 199.2MB. Free memory was 93.6MB in the beginning and 90.5MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 09:34:22,140 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 142.6MB. Free memory is still 86.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 396.59ms. Allocated memory is still 142.6MB. Free memory was 111.4MB in the beginning and 99.5MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.56ms. Allocated memory is still 142.6MB. Free memory was 99.5MB in the beginning and 97.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.69ms. Allocated memory is still 142.6MB. Free memory was 97.5MB in the beginning and 95.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 752.19ms. Allocated memory is still 142.6MB. Free memory was 95.9MB in the beginning and 77.6MB in the end (delta: 18.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 4833.23ms. Allocated memory was 142.6MB in the beginning and 199.2MB in the end (delta: 56.6MB). Free memory was 77.0MB in the beginning and 93.6MB in the end (delta: -16.6MB). Peak memory consumption was 40.6MB. Max. memory is 16.1GB. * Witness Printer took 58.97ms. Allocated memory is still 199.2MB. Free memory was 93.6MB in the beginning and 90.5MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 290 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.6s, OverallIterations: 4, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 227 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 227 mSDsluCounter, 79 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 59 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 254 IncrementalHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 20 mSDtfsCounter, 254 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 440 GetRequests, 366 SyntacticMatches, 5 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=258occurred in iteration=2, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 509 NumberOfCodeBlocks, 473 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 659 ConstructedInterpolants, 0 QuantifiedInterpolants, 1193 SizeOfPredicates, 12 NumberOfNonLiveVariables, 424 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 9 InterpolantComputations, 2 PerfectInterpolantSequences, 123/266 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-20 09:34:22,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a73b358a-482d-49c1-ae2d-c9fc9bb67070/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE