./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe011_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9accf3-84ce-4385-b75a-a27d78200b3e/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9accf3-84ce-4385-b75a-a27d78200b3e/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9accf3-84ce-4385-b75a-a27d78200b3e/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9accf3-84ce-4385-b75a-a27d78200b3e/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe011_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9accf3-84ce-4385-b75a-a27d78200b3e/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9accf3-84ce-4385-b75a-a27d78200b3e/bin/uautomizer-wIGwrQj20G --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c5d6625a918041bec3ddf6b8a37ec84fd94f58444755be51392d35f521d3d51e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 12:54:01,154 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 12:54:01,156 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 12:54:01,197 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 12:54:01,198 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 12:54:01,200 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 12:54:01,203 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 12:54:01,206 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 12:54:01,209 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 12:54:01,211 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 12:54:01,213 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 12:54:01,215 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 12:54:01,216 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 12:54:01,218 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 12:54:01,220 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 12:54:01,222 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 12:54:01,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 12:54:01,226 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 12:54:01,229 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 12:54:01,233 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 12:54:01,236 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 12:54:01,238 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 12:54:01,241 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 12:54:01,242 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 12:54:01,247 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 12:54:01,248 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 12:54:01,249 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 12:54:01,251 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 12:54:01,252 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 12:54:01,254 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 12:54:01,254 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 12:54:01,256 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 12:54:01,258 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 12:54:01,259 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 12:54:01,261 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 12:54:01,262 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 12:54:01,263 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 12:54:01,264 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 12:54:01,264 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 12:54:01,266 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 12:54:01,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 12:54:01,269 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9accf3-84ce-4385-b75a-a27d78200b3e/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 12:54:01,303 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 12:54:01,303 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 12:54:01,304 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 12:54:01,304 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 12:54:01,306 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 12:54:01,306 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 12:54:01,307 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 12:54:01,307 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 12:54:01,308 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 12:54:01,308 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 12:54:01,309 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 12:54:01,309 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 12:54:01,309 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 12:54:01,310 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 12:54:01,310 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 12:54:01,310 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 12:54:01,311 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 12:54:01,311 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 12:54:01,312 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 12:54:01,312 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 12:54:01,312 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 12:54:01,313 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 12:54:01,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:54:01,314 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 12:54:01,314 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 12:54:01,314 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 12:54:01,315 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 12:54:01,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 12:54:01,316 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 12:54:01,316 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 12:54:01,316 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 12:54:01,317 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 12:54:01,317 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_cb9accf3-84ce-4385-b75a-a27d78200b3e/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9accf3-84ce-4385-b75a-a27d78200b3e/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5d6625a918041bec3ddf6b8a37ec84fd94f58444755be51392d35f521d3d51e [2021-11-23 12:54:01,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 12:54:01,669 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 12:54:01,672 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 12:54:01,674 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 12:54:01,680 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 12:54:01,682 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9accf3-84ce-4385-b75a-a27d78200b3e/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/pthread-wmm/safe011_tso.i [2021-11-23 12:54:01,795 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9accf3-84ce-4385-b75a-a27d78200b3e/bin/uautomizer-wIGwrQj20G/data/7370d2a71/b80ac3b2eee04e22ad9df4b3bb8b7e94/FLAGfe1d6dde6 [2021-11-23 12:54:02,505 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 12:54:02,507 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9accf3-84ce-4385-b75a-a27d78200b3e/sv-benchmarks/c/pthread-wmm/safe011_tso.i [2021-11-23 12:54:02,525 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9accf3-84ce-4385-b75a-a27d78200b3e/bin/uautomizer-wIGwrQj20G/data/7370d2a71/b80ac3b2eee04e22ad9df4b3bb8b7e94/FLAGfe1d6dde6 [2021-11-23 12:54:02,794 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9accf3-84ce-4385-b75a-a27d78200b3e/bin/uautomizer-wIGwrQj20G/data/7370d2a71/b80ac3b2eee04e22ad9df4b3bb8b7e94 [2021-11-23 12:54:02,800 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 12:54:02,804 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 12:54:02,807 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 12:54:02,808 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 12:54:02,812 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 12:54:02,814 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:54:02" (1/1) ... [2021-11-23 12:54:02,818 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33600789 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:54:02, skipping insertion in model container [2021-11-23 12:54:02,818 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:54:02" (1/1) ... [2021-11-23 12:54:02,827 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 12:54:02,910 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:54:03,237 WARN L230 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_cb9accf3-84ce-4385-b75a-a27d78200b3e/sv-benchmarks/c/pthread-wmm/safe011_tso.i[945,958] [2021-11-23 12:54:03,540 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:54:03,551 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 12:54:03,571 WARN L230 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_cb9accf3-84ce-4385-b75a-a27d78200b3e/sv-benchmarks/c/pthread-wmm/safe011_tso.i[945,958] [2021-11-23 12:54:03,659 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:54:03,729 INFO L208 MainTranslator]: Completed translation [2021-11-23 12:54:03,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:54:03 WrapperNode [2021-11-23 12:54:03,731 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 12:54:03,732 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 12:54:03,733 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 12:54:03,733 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 12:54:03,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:54:03" (1/1) ... [2021-11-23 12:54:03,783 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:54:03" (1/1) ... [2021-11-23 12:54:03,835 INFO L137 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2021-11-23 12:54:03,835 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 12:54:03,837 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 12:54:03,837 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 12:54:03,838 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 12:54:03,849 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:54:03" (1/1) ... [2021-11-23 12:54:03,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:54:03" (1/1) ... [2021-11-23 12:54:03,855 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:54:03" (1/1) ... [2021-11-23 12:54:03,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:54:03" (1/1) ... [2021-11-23 12:54:03,863 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:54:03" (1/1) ... [2021-11-23 12:54:03,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:54:03" (1/1) ... [2021-11-23 12:54:03,869 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:54:03" (1/1) ... [2021-11-23 12:54:03,873 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 12:54:03,874 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 12:54:03,875 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 12:54:03,875 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 12:54:03,878 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:54:03" (1/1) ... [2021-11-23 12:54:03,903 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:54:03,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9accf3-84ce-4385-b75a-a27d78200b3e/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:54:03,946 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9accf3-84ce-4385-b75a-a27d78200b3e/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 12:54:03,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9accf3-84ce-4385-b75a-a27d78200b3e/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 12:54:04,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 12:54:04,005 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-23 12:54:04,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 12:54:04,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 12:54:04,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 12:54:04,006 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-11-23 12:54:04,007 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-11-23 12:54:04,007 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-11-23 12:54:04,007 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-11-23 12:54:04,009 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-11-23 12:54:04,010 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-11-23 12:54:04,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 12:54:04,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-23 12:54:04,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 12:54:04,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 12:54:04,014 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-23 12:54:04,180 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 12:54:04,182 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 12:54:04,485 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 12:54:04,495 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 12:54:04,495 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 12:54:04,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:54:04 BoogieIcfgContainer [2021-11-23 12:54:04,499 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 12:54:04,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 12:54:04,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 12:54:04,511 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 12:54:04,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:54:02" (1/3) ... [2021-11-23 12:54:04,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@372e4970 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:54:04, skipping insertion in model container [2021-11-23 12:54:04,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:54:03" (2/3) ... [2021-11-23 12:54:04,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@372e4970 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:54:04, skipping insertion in model container [2021-11-23 12:54:04,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:54:04" (3/3) ... [2021-11-23 12:54:04,515 INFO L111 eAbstractionObserver]: Analyzing ICFG safe011_tso.i [2021-11-23 12:54:04,522 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-23 12:54:04,523 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 12:54:04,523 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 12:54:04,523 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-23 12:54:04,586 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:54:04,587 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:54:04,587 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:54:04,587 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:54:04,588 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:54:04,588 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:54:04,588 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:54:04,589 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:54:04,589 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:54:04,590 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:54:04,590 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:54:04,590 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:54:04,592 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:54:04,592 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:54:04,592 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:54:04,593 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:54:04,593 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:54:04,593 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:54:04,594 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:54:04,594 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:54:04,595 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:54:04,596 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:54:04,596 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:54:04,597 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:54:04,598 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:54:04,598 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:54:04,603 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:54:04,603 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:54:04,604 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:54:04,604 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:54:04,604 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:54:04,605 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:54:04,605 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:54:04,606 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:54:04,608 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:54:04,609 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:54:04,617 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:54:04,617 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:54:04,617 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:54:04,618 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:54:04,623 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:54:04,623 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:54:04,624 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:54:04,624 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:54:04,628 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:54:04,629 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:54:04,629 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:54:04,631 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:54:04,632 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-23 12:54:04,717 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 12:54:04,740 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 12:54:04,740 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-23 12:54:04,769 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 99 places, 91 transitions, 197 flow [2021-11-23 12:54:04,857 INFO L129 PetriNetUnfolder]: 2/88 cut-off events. [2021-11-23 12:54:04,857 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-23 12:54:04,862 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 88 events. 2/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2021-11-23 12:54:04,862 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 91 transitions, 197 flow [2021-11-23 12:54:04,870 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 74 transitions, 157 flow [2021-11-23 12:54:04,919 INFO L129 PetriNetUnfolder]: 1/73 cut-off events. [2021-11-23 12:54:04,919 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-23 12:54:04,920 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:54:04,921 INFO L254 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] [2021-11-23 12:54:04,921 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-23 12:54:04,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:54:04,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1250208404, now seen corresponding path program 1 times [2021-11-23 12:54:04,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:54:04,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232293871] [2021-11-23 12:54:04,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:54:04,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:54:05,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:54:05,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:54:05,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:54:05,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232293871] [2021-11-23 12:54:05,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232293871] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:54:05,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:54:05,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 12:54:05,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604468764] [2021-11-23 12:54:05,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:54:05,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 12:54:05,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:54:05,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 12:54:05,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:54:05,775 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 91 [2021-11-23 12:54:05,781 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 74 transitions, 157 flow. Second operand has 7 states, 7 states have (on average 71.71428571428571) internal successors, (502), 7 states have internal predecessors, (502), 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) [2021-11-23 12:54:05,783 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:54:05,788 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 91 [2021-11-23 12:54:05,790 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:54:06,475 INFO L129 PetriNetUnfolder]: 303/820 cut-off events. [2021-11-23 12:54:06,475 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2021-11-23 12:54:06,485 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1371 conditions, 820 events. 303/820 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4890 event pairs, 31 based on Foata normal form. 27/816 useless extension candidates. Maximal degree in co-relation 1335. Up to 135 conditions per place. [2021-11-23 12:54:06,494 INFO L132 encePairwiseOnDemand]: 80/91 looper letters, 22 selfloop transitions, 6 changer transitions 47/131 dead transitions. [2021-11-23 12:54:06,501 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 131 transitions, 421 flow [2021-11-23 12:54:06,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 12:54:06,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-11-23 12:54:06,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 991 transitions. [2021-11-23 12:54:06,556 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8377007607776839 [2021-11-23 12:54:06,557 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 991 transitions. [2021-11-23 12:54:06,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 991 transitions. [2021-11-23 12:54:06,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:54:06,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 991 transitions. [2021-11-23 12:54:06,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 76.23076923076923) internal successors, (991), 13 states have internal predecessors, (991), 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) [2021-11-23 12:54:06,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 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) [2021-11-23 12:54:06,592 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 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) [2021-11-23 12:54:06,594 INFO L186 Difference]: Start difference. First operand has 83 places, 74 transitions, 157 flow. Second operand 13 states and 991 transitions. [2021-11-23 12:54:06,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 131 transitions, 421 flow [2021-11-23 12:54:06,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 131 transitions, 418 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-11-23 12:54:06,606 INFO L242 Difference]: Finished difference. Result has 104 places, 77 transitions, 238 flow [2021-11-23 12:54:06,609 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=238, PETRI_PLACES=104, PETRI_TRANSITIONS=77} [2021-11-23 12:54:06,614 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 21 predicate places. [2021-11-23 12:54:06,614 INFO L470 AbstractCegarLoop]: Abstraction has has 104 places, 77 transitions, 238 flow [2021-11-23 12:54:06,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.71428571428571) internal successors, (502), 7 states have internal predecessors, (502), 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) [2021-11-23 12:54:06,615 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:54:06,615 INFO L254 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] [2021-11-23 12:54:06,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 12:54:06,616 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-23 12:54:06,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:54:06,617 INFO L85 PathProgramCache]: Analyzing trace with hash 404556299, now seen corresponding path program 1 times [2021-11-23 12:54:06,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:54:06,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465081455] [2021-11-23 12:54:06,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:54:06,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:54:06,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:54:06,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:54:06,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:54:06,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465081455] [2021-11-23 12:54:06,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465081455] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:54:06,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:54:06,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 12:54:06,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642958666] [2021-11-23 12:54:06,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:54:06,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 12:54:06,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:54:06,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 12:54:06,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:54:06,864 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 91 [2021-11-23 12:54:06,865 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 77 transitions, 238 flow. Second operand has 7 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 states have internal predecessors, (503), 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) [2021-11-23 12:54:06,865 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:54:06,866 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 91 [2021-11-23 12:54:06,866 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:54:07,391 INFO L129 PetriNetUnfolder]: 172/611 cut-off events. [2021-11-23 12:54:07,391 INFO L130 PetriNetUnfolder]: For 1262/1586 co-relation queries the response was YES. [2021-11-23 12:54:07,396 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1832 conditions, 611 events. 172/611 cut-off events. For 1262/1586 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3549 event pairs, 3 based on Foata normal form. 18/612 useless extension candidates. Maximal degree in co-relation 1785. Up to 112 conditions per place. [2021-11-23 12:54:07,402 INFO L132 encePairwiseOnDemand]: 80/91 looper letters, 26 selfloop transitions, 13 changer transitions 52/147 dead transitions. [2021-11-23 12:54:07,402 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 147 transitions, 928 flow [2021-11-23 12:54:07,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 12:54:07,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-11-23 12:54:07,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 990 transitions. [2021-11-23 12:54:07,408 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8368554522400676 [2021-11-23 12:54:07,408 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 990 transitions. [2021-11-23 12:54:07,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 990 transitions. [2021-11-23 12:54:07,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:54:07,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 990 transitions. [2021-11-23 12:54:07,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 76.15384615384616) internal successors, (990), 13 states have internal predecessors, (990), 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) [2021-11-23 12:54:07,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 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) [2021-11-23 12:54:07,423 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 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) [2021-11-23 12:54:07,426 INFO L186 Difference]: Start difference. First operand has 104 places, 77 transitions, 238 flow. Second operand 13 states and 990 transitions. [2021-11-23 12:54:07,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 147 transitions, 928 flow [2021-11-23 12:54:07,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 147 transitions, 900 flow, removed 12 selfloop flow, removed 4 redundant places. [2021-11-23 12:54:07,450 INFO L242 Difference]: Finished difference. Result has 115 places, 86 transitions, 393 flow [2021-11-23 12:54:07,451 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=393, PETRI_PLACES=115, PETRI_TRANSITIONS=86} [2021-11-23 12:54:07,452 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 32 predicate places. [2021-11-23 12:54:07,453 INFO L470 AbstractCegarLoop]: Abstraction has has 115 places, 86 transitions, 393 flow [2021-11-23 12:54:07,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 states have internal predecessors, (503), 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) [2021-11-23 12:54:07,454 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:54:07,454 INFO L254 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] [2021-11-23 12:54:07,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 12:54:07,455 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-23 12:54:07,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:54:07,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1883401130, now seen corresponding path program 1 times [2021-11-23 12:54:07,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:54:07,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035746562] [2021-11-23 12:54:07,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:54:07,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:54:07,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:54:07,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:54:07,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:54:07,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035746562] [2021-11-23 12:54:07,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035746562] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:54:07,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:54:07,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 12:54:07,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283627840] [2021-11-23 12:54:07,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:54:07,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 12:54:07,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:54:07,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 12:54:07,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-23 12:54:07,764 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2021-11-23 12:54:07,766 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 86 transitions, 393 flow. Second operand has 8 states, 8 states have (on average 69.875) internal successors, (559), 8 states have internal predecessors, (559), 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) [2021-11-23 12:54:07,767 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:54:07,767 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2021-11-23 12:54:07,767 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:54:08,174 INFO L129 PetriNetUnfolder]: 213/662 cut-off events. [2021-11-23 12:54:08,174 INFO L130 PetriNetUnfolder]: For 2872/3781 co-relation queries the response was YES. [2021-11-23 12:54:08,181 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2427 conditions, 662 events. 213/662 cut-off events. For 2872/3781 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3719 event pairs, 20 based on Foata normal form. 23/658 useless extension candidates. Maximal degree in co-relation 2367. Up to 131 conditions per place. [2021-11-23 12:54:08,187 INFO L132 encePairwiseOnDemand]: 80/91 looper letters, 26 selfloop transitions, 8 changer transitions 71/159 dead transitions. [2021-11-23 12:54:08,187 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 159 transitions, 1311 flow [2021-11-23 12:54:08,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 12:54:08,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-11-23 12:54:08,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 816 transitions. [2021-11-23 12:54:08,193 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8151848151848152 [2021-11-23 12:54:08,193 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 816 transitions. [2021-11-23 12:54:08,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 816 transitions. [2021-11-23 12:54:08,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:54:08,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 816 transitions. [2021-11-23 12:54:08,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 74.18181818181819) internal successors, (816), 11 states have internal predecessors, (816), 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) [2021-11-23 12:54:08,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 91.0) internal successors, (1092), 12 states have internal predecessors, (1092), 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) [2021-11-23 12:54:08,204 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 91.0) internal successors, (1092), 12 states have internal predecessors, (1092), 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) [2021-11-23 12:54:08,204 INFO L186 Difference]: Start difference. First operand has 115 places, 86 transitions, 393 flow. Second operand 11 states and 816 transitions. [2021-11-23 12:54:08,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 159 transitions, 1311 flow [2021-11-23 12:54:08,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 159 transitions, 1245 flow, removed 33 selfloop flow, removed 3 redundant places. [2021-11-23 12:54:08,231 INFO L242 Difference]: Finished difference. Result has 121 places, 80 transitions, 338 flow [2021-11-23 12:54:08,232 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=338, PETRI_PLACES=121, PETRI_TRANSITIONS=80} [2021-11-23 12:54:08,233 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 38 predicate places. [2021-11-23 12:54:08,234 INFO L470 AbstractCegarLoop]: Abstraction has has 121 places, 80 transitions, 338 flow [2021-11-23 12:54:08,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 69.875) internal successors, (559), 8 states have internal predecessors, (559), 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) [2021-11-23 12:54:08,235 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:54:08,235 INFO L254 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] [2021-11-23 12:54:08,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 12:54:08,236 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-23 12:54:08,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:54:08,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1499644908, now seen corresponding path program 1 times [2021-11-23 12:54:08,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:54:08,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662553185] [2021-11-23 12:54:08,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:54:08,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:54:08,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:54:08,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:54:08,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:54:08,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662553185] [2021-11-23 12:54:08,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662553185] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:54:08,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:54:08,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 12:54:08,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778353285] [2021-11-23 12:54:08,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:54:08,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 12:54:08,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:54:08,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 12:54:08,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 12:54:08,427 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 91 [2021-11-23 12:54:08,428 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 80 transitions, 338 flow. Second operand has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 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) [2021-11-23 12:54:08,429 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:54:08,429 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 91 [2021-11-23 12:54:08,429 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:54:08,662 INFO L129 PetriNetUnfolder]: 48/255 cut-off events. [2021-11-23 12:54:08,662 INFO L130 PetriNetUnfolder]: For 1038/1112 co-relation queries the response was YES. [2021-11-23 12:54:08,666 INFO L84 FinitePrefix]: Finished finitePrefix Result has 883 conditions, 255 events. 48/255 cut-off events. For 1038/1112 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1018 event pairs, 8 based on Foata normal form. 16/263 useless extension candidates. Maximal degree in co-relation 854. Up to 54 conditions per place. [2021-11-23 12:54:08,669 INFO L132 encePairwiseOnDemand]: 84/91 looper letters, 14 selfloop transitions, 3 changer transitions 22/105 dead transitions. [2021-11-23 12:54:08,669 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 105 transitions, 660 flow [2021-11-23 12:54:08,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 12:54:08,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-11-23 12:54:08,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 712 transitions. [2021-11-23 12:54:08,674 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8693528693528694 [2021-11-23 12:54:08,674 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 712 transitions. [2021-11-23 12:54:08,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 712 transitions. [2021-11-23 12:54:08,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:54:08,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 712 transitions. [2021-11-23 12:54:08,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 79.11111111111111) internal successors, (712), 9 states have internal predecessors, (712), 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) [2021-11-23 12:54:08,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 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) [2021-11-23 12:54:08,682 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 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) [2021-11-23 12:54:08,682 INFO L186 Difference]: Start difference. First operand has 121 places, 80 transitions, 338 flow. Second operand 9 states and 712 transitions. [2021-11-23 12:54:08,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 105 transitions, 660 flow [2021-11-23 12:54:08,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 105 transitions, 559 flow, removed 21 selfloop flow, removed 13 redundant places. [2021-11-23 12:54:08,698 INFO L242 Difference]: Finished difference. Result has 117 places, 81 transitions, 329 flow [2021-11-23 12:54:08,699 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=329, PETRI_PLACES=117, PETRI_TRANSITIONS=81} [2021-11-23 12:54:08,701 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 34 predicate places. [2021-11-23 12:54:08,701 INFO L470 AbstractCegarLoop]: Abstraction has has 117 places, 81 transitions, 329 flow [2021-11-23 12:54:08,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 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) [2021-11-23 12:54:08,705 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:54:08,705 INFO L254 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] [2021-11-23 12:54:08,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 12:54:08,706 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-23 12:54:08,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:54:08,709 INFO L85 PathProgramCache]: Analyzing trace with hash -2137277465, now seen corresponding path program 1 times [2021-11-23 12:54:08,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:54:08,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281580377] [2021-11-23 12:54:08,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:54:08,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:54:08,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:54:08,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:54:08,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:54:08,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281580377] [2021-11-23 12:54:08,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281580377] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:54:08,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:54:08,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 12:54:08,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367533791] [2021-11-23 12:54:08,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:54:08,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 12:54:08,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:54:08,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 12:54:08,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 12:54:08,918 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2021-11-23 12:54:08,919 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 81 transitions, 329 flow. Second operand has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 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) [2021-11-23 12:54:08,920 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:54:08,920 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2021-11-23 12:54:08,920 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:54:09,242 INFO L129 PetriNetUnfolder]: 263/758 cut-off events. [2021-11-23 12:54:09,242 INFO L130 PetriNetUnfolder]: For 880/926 co-relation queries the response was YES. [2021-11-23 12:54:09,251 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1666 conditions, 758 events. 263/758 cut-off events. For 880/926 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5157 event pairs, 15 based on Foata normal form. 12/695 useless extension candidates. Maximal degree in co-relation 1639. Up to 186 conditions per place. [2021-11-23 12:54:09,257 INFO L132 encePairwiseOnDemand]: 81/91 looper letters, 29 selfloop transitions, 17 changer transitions 0/113 dead transitions. [2021-11-23 12:54:09,257 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 113 transitions, 489 flow [2021-11-23 12:54:09,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 12:54:09,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-23 12:54:09,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 788 transitions. [2021-11-23 12:54:09,262 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.865934065934066 [2021-11-23 12:54:09,262 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 788 transitions. [2021-11-23 12:54:09,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 788 transitions. [2021-11-23 12:54:09,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:54:09,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 788 transitions. [2021-11-23 12:54:09,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 78.8) internal successors, (788), 10 states have internal predecessors, (788), 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) [2021-11-23 12:54:09,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 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) [2021-11-23 12:54:09,273 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 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) [2021-11-23 12:54:09,273 INFO L186 Difference]: Start difference. First operand has 117 places, 81 transitions, 329 flow. Second operand 10 states and 788 transitions. [2021-11-23 12:54:09,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 113 transitions, 489 flow [2021-11-23 12:54:09,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 113 transitions, 474 flow, removed 6 selfloop flow, removed 4 redundant places. [2021-11-23 12:54:09,289 INFO L242 Difference]: Finished difference. Result has 122 places, 96 transitions, 434 flow [2021-11-23 12:54:09,290 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=434, PETRI_PLACES=122, PETRI_TRANSITIONS=96} [2021-11-23 12:54:09,293 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 39 predicate places. [2021-11-23 12:54:09,294 INFO L470 AbstractCegarLoop]: Abstraction has has 122 places, 96 transitions, 434 flow [2021-11-23 12:54:09,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 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) [2021-11-23 12:54:09,294 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:54:09,295 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:54:09,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 12:54:09,295 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-23 12:54:09,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:54:09,296 INFO L85 PathProgramCache]: Analyzing trace with hash -645942966, now seen corresponding path program 1 times [2021-11-23 12:54:09,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:54:09,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494891163] [2021-11-23 12:54:09,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:54:09,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:54:09,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:54:09,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:54:09,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:54:09,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494891163] [2021-11-23 12:54:09,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494891163] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:54:09,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:54:09,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 12:54:09,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693534117] [2021-11-23 12:54:09,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:54:09,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 12:54:09,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:54:09,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 12:54:09,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:54:09,456 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2021-11-23 12:54:09,457 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 96 transitions, 434 flow. Second operand has 7 states, 7 states have (on average 75.57142857142857) internal successors, (529), 7 states have internal predecessors, (529), 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) [2021-11-23 12:54:09,457 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:54:09,457 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2021-11-23 12:54:09,457 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:54:09,849 INFO L129 PetriNetUnfolder]: 231/685 cut-off events. [2021-11-23 12:54:09,850 INFO L130 PetriNetUnfolder]: For 1700/2016 co-relation queries the response was YES. [2021-11-23 12:54:09,858 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2305 conditions, 685 events. 231/685 cut-off events. For 1700/2016 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 4795 event pairs, 4 based on Foata normal form. 74/707 useless extension candidates. Maximal degree in co-relation 2276. Up to 238 conditions per place. [2021-11-23 12:54:09,864 INFO L132 encePairwiseOnDemand]: 81/91 looper letters, 22 selfloop transitions, 32 changer transitions 13/134 dead transitions. [2021-11-23 12:54:09,864 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 134 transitions, 804 flow [2021-11-23 12:54:09,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 12:54:09,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-11-23 12:54:09,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1025 transitions. [2021-11-23 12:54:09,869 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8664412510566357 [2021-11-23 12:54:09,870 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1025 transitions. [2021-11-23 12:54:09,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1025 transitions. [2021-11-23 12:54:09,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:54:09,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1025 transitions. [2021-11-23 12:54:09,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 78.84615384615384) internal successors, (1025), 13 states have internal predecessors, (1025), 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) [2021-11-23 12:54:09,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 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) [2021-11-23 12:54:09,880 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 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) [2021-11-23 12:54:09,881 INFO L186 Difference]: Start difference. First operand has 122 places, 96 transitions, 434 flow. Second operand 13 states and 1025 transitions. [2021-11-23 12:54:09,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 134 transitions, 804 flow [2021-11-23 12:54:09,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 134 transitions, 778 flow, removed 12 selfloop flow, removed 4 redundant places. [2021-11-23 12:54:09,895 INFO L242 Difference]: Finished difference. Result has 134 places, 112 transitions, 611 flow [2021-11-23 12:54:09,895 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=611, PETRI_PLACES=134, PETRI_TRANSITIONS=112} [2021-11-23 12:54:09,896 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 51 predicate places. [2021-11-23 12:54:09,897 INFO L470 AbstractCegarLoop]: Abstraction has has 134 places, 112 transitions, 611 flow [2021-11-23 12:54:09,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.57142857142857) internal successors, (529), 7 states have internal predecessors, (529), 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) [2021-11-23 12:54:09,898 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:54:09,898 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:54:09,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 12:54:09,898 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-23 12:54:09,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:54:09,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1220039447, now seen corresponding path program 1 times [2021-11-23 12:54:09,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:54:09,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983215359] [2021-11-23 12:54:09,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:54:09,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:54:09,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:54:10,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:54:10,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:54:10,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983215359] [2021-11-23 12:54:10,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983215359] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:54:10,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:54:10,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 12:54:10,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382530371] [2021-11-23 12:54:10,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:54:10,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 12:54:10,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:54:10,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 12:54:10,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 12:54:10,050 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2021-11-23 12:54:10,051 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 112 transitions, 611 flow. Second operand has 8 states, 8 states have (on average 75.5) internal successors, (604), 8 states have internal predecessors, (604), 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) [2021-11-23 12:54:10,051 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:54:10,051 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2021-11-23 12:54:10,051 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:54:10,439 INFO L129 PetriNetUnfolder]: 186/579 cut-off events. [2021-11-23 12:54:10,439 INFO L130 PetriNetUnfolder]: For 2434/2809 co-relation queries the response was YES. [2021-11-23 12:54:10,447 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2321 conditions, 579 events. 186/579 cut-off events. For 2434/2809 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4210 event pairs, 1 based on Foata normal form. 69/598 useless extension candidates. Maximal degree in co-relation 2291. Up to 189 conditions per place. [2021-11-23 12:54:10,449 INFO L132 encePairwiseOnDemand]: 83/91 looper letters, 0 selfloop transitions, 0 changer transitions 119/119 dead transitions. [2021-11-23 12:54:10,450 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 119 transitions, 786 flow [2021-11-23 12:54:10,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-23 12:54:10,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-11-23 12:54:10,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1163 transitions. [2021-11-23 12:54:10,456 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.852014652014652 [2021-11-23 12:54:10,456 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1163 transitions. [2021-11-23 12:54:10,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1163 transitions. [2021-11-23 12:54:10,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:54:10,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1163 transitions. [2021-11-23 12:54:10,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 77.53333333333333) internal successors, (1163), 15 states have internal predecessors, (1163), 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) [2021-11-23 12:54:10,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 91.0) internal successors, (1456), 16 states have internal predecessors, (1456), 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) [2021-11-23 12:54:10,469 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 91.0) internal successors, (1456), 16 states have internal predecessors, (1456), 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) [2021-11-23 12:54:10,469 INFO L186 Difference]: Start difference. First operand has 134 places, 112 transitions, 611 flow. Second operand 15 states and 1163 transitions. [2021-11-23 12:54:10,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 119 transitions, 786 flow [2021-11-23 12:54:10,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 119 transitions, 613 flow, removed 61 selfloop flow, removed 17 redundant places. [2021-11-23 12:54:10,489 INFO L242 Difference]: Finished difference. Result has 122 places, 0 transitions, 0 flow [2021-11-23 12:54:10,489 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=0, PETRI_PLACES=122, PETRI_TRANSITIONS=0} [2021-11-23 12:54:10,490 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 39 predicate places. [2021-11-23 12:54:10,491 INFO L470 AbstractCegarLoop]: Abstraction has has 122 places, 0 transitions, 0 flow [2021-11-23 12:54:10,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 75.5) internal successors, (604), 8 states have internal predecessors, (604), 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) [2021-11-23 12:54:10,494 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2021-11-23 12:54:10,495 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2021-11-23 12:54:10,495 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2021-11-23 12:54:10,496 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2021-11-23 12:54:10,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 12:54:10,501 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:54:10,504 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-23 12:54:10,504 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 12:54:10,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 12:54:10 BasicIcfg [2021-11-23 12:54:10,508 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 12:54:10,509 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 12:54:10,509 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 12:54:10,510 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 12:54:10,510 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:54:04" (3/4) ... [2021-11-23 12:54:10,513 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-23 12:54:10,521 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-11-23 12:54:10,521 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-11-23 12:54:10,522 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-11-23 12:54:10,527 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-11-23 12:54:10,528 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-23 12:54:10,528 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-23 12:54:10,528 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 12:54:10,570 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9accf3-84ce-4385-b75a-a27d78200b3e/bin/uautomizer-wIGwrQj20G/witness.graphml [2021-11-23 12:54:10,571 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 12:54:10,571 INFO L158 Benchmark]: Toolchain (without parser) took 7767.24ms. Allocated memory was 94.4MB in the beginning and 155.2MB in the end (delta: 60.8MB). Free memory was 60.7MB in the beginning and 51.7MB in the end (delta: 9.1MB). Peak memory consumption was 69.0MB. Max. memory is 16.1GB. [2021-11-23 12:54:10,572 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 94.4MB. Free memory is still 49.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 12:54:10,573 INFO L158 Benchmark]: CACSL2BoogieTranslator took 924.15ms. Allocated memory was 94.4MB in the beginning and 119.5MB in the end (delta: 25.2MB). Free memory was 60.5MB in the beginning and 86.0MB in the end (delta: -25.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 12:54:10,573 INFO L158 Benchmark]: Boogie Procedure Inliner took 103.36ms. Allocated memory is still 119.5MB. Free memory was 85.4MB in the beginning and 83.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 12:54:10,574 INFO L158 Benchmark]: Boogie Preprocessor took 36.58ms. Allocated memory is still 119.5MB. Free memory was 83.9MB in the beginning and 82.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 12:54:10,574 INFO L158 Benchmark]: RCFGBuilder took 624.42ms. Allocated memory is still 119.5MB. Free memory was 82.4MB in the beginning and 70.0MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 12:54:10,575 INFO L158 Benchmark]: TraceAbstraction took 6002.40ms. Allocated memory was 119.5MB in the beginning and 155.2MB in the end (delta: 35.7MB). Free memory was 69.8MB in the beginning and 54.8MB in the end (delta: 15.0MB). Peak memory consumption was 52.8MB. Max. memory is 16.1GB. [2021-11-23 12:54:10,575 INFO L158 Benchmark]: Witness Printer took 61.69ms. Allocated memory is still 155.2MB. Free memory was 54.8MB in the beginning and 51.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 12:54:10,578 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 94.4MB. Free memory is still 49.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 924.15ms. Allocated memory was 94.4MB in the beginning and 119.5MB in the end (delta: 25.2MB). Free memory was 60.5MB in the beginning and 86.0MB in the end (delta: -25.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 103.36ms. Allocated memory is still 119.5MB. Free memory was 85.4MB in the beginning and 83.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.58ms. Allocated memory is still 119.5MB. Free memory was 83.9MB in the beginning and 82.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 624.42ms. Allocated memory is still 119.5MB. Free memory was 82.4MB in the beginning and 70.0MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 6002.40ms. Allocated memory was 119.5MB in the beginning and 155.2MB in the end (delta: 35.7MB). Free memory was 69.8MB in the beginning and 54.8MB in the end (delta: 15.0MB). Peak memory consumption was 52.8MB. Max. memory is 16.1GB. * Witness Printer took 61.69ms. Allocated memory is still 155.2MB. Free memory was 54.8MB in the beginning and 51.7MB 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: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 114 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: 5.8s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 339 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 339 mSDsluCounter, 463 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 426 mSDsCounter, 85 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 423 IncrementalHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 85 mSolverCounterUnsat, 108 mSDtfsCounter, 423 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=611occurred in iteration=6, InterpolantAutomatonStates: 84, 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: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 414 NumberOfCodeBlocks, 414 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 407 ConstructedInterpolants, 0 QuantifiedInterpolants, 1553 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-11-23 12:54:10,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9accf3-84ce-4385-b75a-a27d78200b3e/bin/uautomizer-wIGwrQj20G/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