./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe012_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bdd4f67-0fd3-45d2-aa0b-540ab5f8cdf0/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bdd4f67-0fd3-45d2-aa0b-540ab5f8cdf0/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bdd4f67-0fd3-45d2-aa0b-540ab5f8cdf0/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bdd4f67-0fd3-45d2-aa0b-540ab5f8cdf0/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe012_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bdd4f67-0fd3-45d2-aa0b-540ab5f8cdf0/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bdd4f67-0fd3-45d2-aa0b-540ab5f8cdf0/bin/uautomizer-hJ6jxDFKc3 --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 ed6534f05f1699691de079a1d39d980abe66bc95 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 19:52:38,933 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:52:38,936 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:52:38,995 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:52:38,996 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:52:39,001 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:52:39,003 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:52:39,007 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:52:39,010 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:52:39,018 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:52:39,019 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:52:39,021 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:52:39,022 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:52:39,025 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:52:39,027 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:52:39,033 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:52:39,035 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:52:39,036 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:52:39,039 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:52:39,049 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:52:39,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:52:39,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:52:39,057 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:52:39,058 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:52:39,062 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:52:39,063 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:52:39,063 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:52:39,066 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:52:39,066 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:52:39,068 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:52:39,068 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:52:39,069 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:52:39,071 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:52:39,072 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:52:39,074 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:52:39,074 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:52:39,075 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:52:39,075 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:52:39,076 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:52:39,076 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:52:39,077 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:52:39,078 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bdd4f67-0fd3-45d2-aa0b-540ab5f8cdf0/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 19:52:39,126 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:52:39,126 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:52:39,127 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:52:39,127 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:52:39,135 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:52:39,135 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:52:39,135 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:52:39,136 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:52:39,136 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:52:39,136 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 19:52:39,137 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:52:39,137 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:52:39,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:52:39,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:52:39,138 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:52:39,138 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:52:39,139 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:52:39,139 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:52:39,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:52:39,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:52:39,139 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:52:39,140 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:52:39,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:52:39,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:52:39,141 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:52:39,141 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:52:39,141 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 19:52:39,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 19:52:39,141 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:52:39,143 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:52:39,143 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:52:39,144 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:52:39,144 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_3bdd4f67-0fd3-45d2-aa0b-540ab5f8cdf0/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bdd4f67-0fd3-45d2-aa0b-540ab5f8cdf0/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ed6534f05f1699691de079a1d39d980abe66bc95 [2021-10-15 19:52:39,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:52:39,496 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:52:39,498 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:52:39,500 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:52:39,500 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:52:39,501 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bdd4f67-0fd3-45d2-aa0b-540ab5f8cdf0/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/pthread-wmm/safe012_tso.i [2021-10-15 19:52:39,596 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bdd4f67-0fd3-45d2-aa0b-540ab5f8cdf0/bin/uautomizer-hJ6jxDFKc3/data/95f4de038/5f30e837d89a44a7af037c99470618c3/FLAG85975ee22 [2021-10-15 19:52:40,271 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:52:40,271 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bdd4f67-0fd3-45d2-aa0b-540ab5f8cdf0/sv-benchmarks/c/pthread-wmm/safe012_tso.i [2021-10-15 19:52:40,284 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bdd4f67-0fd3-45d2-aa0b-540ab5f8cdf0/bin/uautomizer-hJ6jxDFKc3/data/95f4de038/5f30e837d89a44a7af037c99470618c3/FLAG85975ee22 [2021-10-15 19:52:40,525 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bdd4f67-0fd3-45d2-aa0b-540ab5f8cdf0/bin/uautomizer-hJ6jxDFKc3/data/95f4de038/5f30e837d89a44a7af037c99470618c3 [2021-10-15 19:52:40,528 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:52:40,529 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:52:40,543 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:52:40,543 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:52:40,551 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:52:40,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:52:40" (1/1) ... [2021-10-15 19:52:40,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7afdce96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:52:40, skipping insertion in model container [2021-10-15 19:52:40,555 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:52:40" (1/1) ... [2021-10-15 19:52:40,564 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:52:40,609 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:52:40,838 WARN L228 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_3bdd4f67-0fd3-45d2-aa0b-540ab5f8cdf0/sv-benchmarks/c/pthread-wmm/safe012_tso.i[945,958] [2021-10-15 19:52:41,090 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:52:41,102 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:52:41,117 WARN L228 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_3bdd4f67-0fd3-45d2-aa0b-540ab5f8cdf0/sv-benchmarks/c/pthread-wmm/safe012_tso.i[945,958] [2021-10-15 19:52:41,175 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:52:41,229 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:52:41,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:52:41 WrapperNode [2021-10-15 19:52:41,231 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:52:41,232 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:52:41,232 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:52:41,232 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:52:41,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:52:41" (1/1) ... [2021-10-15 19:52:41,269 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:52:41" (1/1) ... [2021-10-15 19:52:41,297 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:52:41,298 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:52:41,298 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:52:41,298 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:52:41,306 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:52:41" (1/1) ... [2021-10-15 19:52:41,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:52:41" (1/1) ... [2021-10-15 19:52:41,310 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:52:41" (1/1) ... [2021-10-15 19:52:41,310 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:52:41" (1/1) ... [2021-10-15 19:52:41,317 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:52:41" (1/1) ... [2021-10-15 19:52:41,319 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:52:41" (1/1) ... [2021-10-15 19:52:41,321 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:52:41" (1/1) ... [2021-10-15 19:52:41,324 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:52:41,325 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:52:41,325 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:52:41,325 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:52:41,326 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:52:41" (1/1) ... [2021-10-15 19:52:41,334 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:52:41,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bdd4f67-0fd3-45d2-aa0b-540ab5f8cdf0/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:52:41,361 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bdd4f67-0fd3-45d2-aa0b-540ab5f8cdf0/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:52:41,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bdd4f67-0fd3-45d2-aa0b-540ab5f8cdf0/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:52:41,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-15 19:52:41,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-15 19:52:41,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:52:41,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-15 19:52:41,414 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-15 19:52:41,414 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-15 19:52:41,414 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-15 19:52:41,415 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-15 19:52:41,415 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-15 19:52:41,415 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-15 19:52:41,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 19:52:41,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-15 19:52:41,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:52:41,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:52:41,417 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-15 19:52:41,728 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:52:41,728 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-15 19:52:41,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:52:41 BoogieIcfgContainer [2021-10-15 19:52:41,730 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:52:41,732 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:52:41,732 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:52:41,735 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:52:41,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:52:40" (1/3) ... [2021-10-15 19:52:41,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7608654c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:52:41, skipping insertion in model container [2021-10-15 19:52:41,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:52:41" (2/3) ... [2021-10-15 19:52:41,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7608654c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:52:41, skipping insertion in model container [2021-10-15 19:52:41,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:52:41" (3/3) ... [2021-10-15 19:52:41,738 INFO L111 eAbstractionObserver]: Analyzing ICFG safe012_tso.i [2021-10-15 19:52:41,743 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-15 19:52:41,744 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:52:41,744 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 19:52:41,744 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-15 19:52:41,791 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:52:41,792 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:52:41,792 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:52:41,792 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:52:41,793 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:52:41,793 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:52:41,793 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:52:41,793 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:52:41,794 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:52:41,794 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:52:41,794 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:52:41,794 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:52:41,795 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:52:41,795 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:52:41,795 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:52:41,796 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:52:41,796 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:52:41,796 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:52:41,796 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:52:41,796 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:52:41,797 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:52:41,797 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:52:41,797 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:52:41,798 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:52:41,798 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:52:41,798 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:52:41,798 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:52:41,799 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:52:41,799 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:52:41,799 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:52:41,799 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:52:41,800 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:52:41,800 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:52:41,800 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:52:41,800 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:52:41,801 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:52:41,804 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:52:41,804 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:52:41,804 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:52:41,805 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:52:41,810 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:52:41,810 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:52:41,810 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:52:41,811 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:52:41,814 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:52:41,814 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:52:41,815 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:52:41,815 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:52:41,817 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-15 19:52:41,871 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:52:41,877 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, mConcurrency=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 [2021-10-15 19:52:41,877 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-15 19:52:41,889 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 93 places, 85 transitions, 185 flow [2021-10-15 19:52:41,940 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2021-10-15 19:52:41,940 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:52:41,944 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-10-15 19:52:41,944 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 85 transitions, 185 flow [2021-10-15 19:52:41,949 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 70 transitions, 149 flow [2021-10-15 19:52:41,974 INFO L129 PetriNetUnfolder]: 1/69 cut-off events. [2021-10-15 19:52:41,974 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:52:41,975 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:52:41,976 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] [2021-10-15 19:52:41,976 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-15 19:52:41,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:52:41,982 INFO L82 PathProgramCache]: Analyzing trace with hash -194702042, now seen corresponding path program 1 times [2021-10-15 19:52:41,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:52:41,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765791898] [2021-10-15 19:52:41,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:52:41,994 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:52:42,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:52:42,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:52:42,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:52:42,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765791898] [2021-10-15 19:52:42,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765791898] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:52:42,575 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:52:42,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-15 19:52:42,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450954136] [2021-10-15 19:52:42,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 19:52:42,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:52:42,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 19:52:42,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:52:42,617 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 85 [2021-10-15 19:52:42,622 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 70 transitions, 149 flow. Second operand has 6 states, 6 states have (on average 74.16666666666667) internal successors, (445), 6 states have internal predecessors, (445), 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) [2021-10-15 19:52:42,622 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:52:42,622 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 85 [2021-10-15 19:52:42,624 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:52:42,763 INFO L129 PetriNetUnfolder]: 3/84 cut-off events. [2021-10-15 19:52:42,764 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:52:42,765 INFO L84 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 84 events. 3/84 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 88 event pairs, 0 based on Foata normal form. 4/87 useless extension candidates. Maximal degree in co-relation 82. Up to 7 conditions per place. [2021-10-15 19:52:42,766 INFO L132 encePairwiseOnDemand]: 78/85 looper letters, 6 selfloop transitions, 2 changer transitions 11/79 dead transitions. [2021-10-15 19:52:42,767 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 79 transitions, 203 flow [2021-10-15 19:52:42,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-15 19:52:42,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-15 19:52:42,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 679 transitions. [2021-10-15 19:52:42,787 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8875816993464052 [2021-10-15 19:52:42,788 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 679 transitions. [2021-10-15 19:52:42,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 679 transitions. [2021-10-15 19:52:42,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:52:42,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 679 transitions. [2021-10-15 19:52:42,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 75.44444444444444) internal successors, (679), 9 states have internal predecessors, (679), 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) [2021-10-15 19:52:42,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 85.0) internal successors, (850), 10 states have internal predecessors, (850), 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) [2021-10-15 19:52:42,814 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 85.0) internal successors, (850), 10 states have internal predecessors, (850), 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) [2021-10-15 19:52:42,816 INFO L186 Difference]: Start difference. First operand has 79 places, 70 transitions, 149 flow. Second operand 9 states and 679 transitions. [2021-10-15 19:52:42,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 79 transitions, 203 flow [2021-10-15 19:52:42,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 79 transitions, 200 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-15 19:52:42,824 INFO L242 Difference]: Finished difference. Result has 91 places, 68 transitions, 162 flow [2021-10-15 19:52:42,827 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=162, PETRI_PLACES=91, PETRI_TRANSITIONS=68} [2021-10-15 19:52:42,828 INFO L334 CegarLoopForPetriNet]: 79 programPoint places, 12 predicate places. [2021-10-15 19:52:42,828 INFO L470 AbstractCegarLoop]: Abstraction has has 91 places, 68 transitions, 162 flow [2021-10-15 19:52:42,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.16666666666667) internal successors, (445), 6 states have internal predecessors, (445), 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) [2021-10-15 19:52:42,829 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:52:42,829 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] [2021-10-15 19:52:42,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 19:52:42,830 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-15 19:52:42,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:52:42,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1835865733, now seen corresponding path program 1 times [2021-10-15 19:52:42,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:52:42,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739650558] [2021-10-15 19:52:42,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:52:42,832 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:52:42,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:52:43,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:52:43,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:52:43,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739650558] [2021-10-15 19:52:43,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739650558] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:52:43,042 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:52:43,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-15 19:52:43,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46708097] [2021-10-15 19:52:43,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-15 19:52:43,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:52:43,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-15 19:52:43,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-15 19:52:43,048 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 85 [2021-10-15 19:52:43,049 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 68 transitions, 162 flow. Second operand has 7 states, 7 states have (on average 68.57142857142857) internal successors, (480), 7 states have internal predecessors, (480), 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) [2021-10-15 19:52:43,049 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:52:43,049 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 85 [2021-10-15 19:52:43,049 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:52:43,531 INFO L129 PetriNetUnfolder]: 65/234 cut-off events. [2021-10-15 19:52:43,532 INFO L130 PetriNetUnfolder]: For 71/85 co-relation queries the response was YES. [2021-10-15 19:52:43,540 INFO L84 FinitePrefix]: Finished finitePrefix Result has 464 conditions, 234 events. 65/234 cut-off events. For 71/85 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 845 event pairs, 5 based on Foata normal form. 8/237 useless extension candidates. Maximal degree in co-relation 423. Up to 35 conditions per place. [2021-10-15 19:52:43,542 INFO L132 encePairwiseOnDemand]: 73/85 looper letters, 16 selfloop transitions, 10 changer transitions 38/118 dead transitions. [2021-10-15 19:52:43,542 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 118 transitions, 446 flow [2021-10-15 19:52:43,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-15 19:52:43,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-15 19:52:43,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1207 transitions. [2021-10-15 19:52:43,550 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8352941176470589 [2021-10-15 19:52:43,550 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1207 transitions. [2021-10-15 19:52:43,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1207 transitions. [2021-10-15 19:52:43,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:52:43,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1207 transitions. [2021-10-15 19:52:43,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 71.0) internal successors, (1207), 17 states have internal predecessors, (1207), 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) [2021-10-15 19:52:43,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 85.0) internal successors, (1530), 18 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:52:43,581 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 85.0) internal successors, (1530), 18 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:52:43,595 INFO L186 Difference]: Start difference. First operand has 91 places, 68 transitions, 162 flow. Second operand 17 states and 1207 transitions. [2021-10-15 19:52:43,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 118 transitions, 446 flow [2021-10-15 19:52:43,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 118 transitions, 382 flow, removed 28 selfloop flow, removed 8 redundant places. [2021-10-15 19:52:43,603 INFO L242 Difference]: Finished difference. Result has 107 places, 73 transitions, 246 flow [2021-10-15 19:52:43,604 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=246, PETRI_PLACES=107, PETRI_TRANSITIONS=73} [2021-10-15 19:52:43,604 INFO L334 CegarLoopForPetriNet]: 79 programPoint places, 28 predicate places. [2021-10-15 19:52:43,604 INFO L470 AbstractCegarLoop]: Abstraction has has 107 places, 73 transitions, 246 flow [2021-10-15 19:52:43,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 68.57142857142857) internal successors, (480), 7 states have internal predecessors, (480), 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) [2021-10-15 19:52:43,605 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:52:43,605 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] [2021-10-15 19:52:43,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-15 19:52:43,606 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-15 19:52:43,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:52:43,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1035925963, now seen corresponding path program 1 times [2021-10-15 19:52:43,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:52:43,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508744441] [2021-10-15 19:52:43,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:52:43,608 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:52:43,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:52:43,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:52:43,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:52:43,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508744441] [2021-10-15 19:52:43,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508744441] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:52:43,841 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:52:43,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-15 19:52:43,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251133900] [2021-10-15 19:52:43,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-15 19:52:43,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:52:43,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-15 19:52:43,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-15 19:52:43,846 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 85 [2021-10-15 19:52:43,848 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 73 transitions, 246 flow. Second operand has 7 states, 7 states have (on average 70.57142857142857) internal successors, (494), 7 states have internal predecessors, (494), 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) [2021-10-15 19:52:43,848 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:52:43,848 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 85 [2021-10-15 19:52:43,848 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:52:44,026 INFO L129 PetriNetUnfolder]: 12/121 cut-off events. [2021-10-15 19:52:44,027 INFO L130 PetriNetUnfolder]: For 307/344 co-relation queries the response was YES. [2021-10-15 19:52:44,030 INFO L84 FinitePrefix]: Finished finitePrefix Result has 340 conditions, 121 events. 12/121 cut-off events. For 307/344 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 250 event pairs, 0 based on Foata normal form. 2/121 useless extension candidates. Maximal degree in co-relation 297. Up to 25 conditions per place. [2021-10-15 19:52:44,031 INFO L132 encePairwiseOnDemand]: 77/85 looper letters, 13 selfloop transitions, 5 changer transitions 10/85 dead transitions. [2021-10-15 19:52:44,032 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 85 transitions, 395 flow [2021-10-15 19:52:44,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-15 19:52:44,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-15 19:52:44,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 716 transitions. [2021-10-15 19:52:44,038 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8423529411764706 [2021-10-15 19:52:44,038 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 716 transitions. [2021-10-15 19:52:44,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 716 transitions. [2021-10-15 19:52:44,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:52:44,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 716 transitions. [2021-10-15 19:52:44,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 71.6) internal successors, (716), 10 states have internal predecessors, (716), 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) [2021-10-15 19:52:44,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 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) [2021-10-15 19:52:44,047 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 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) [2021-10-15 19:52:44,047 INFO L186 Difference]: Start difference. First operand has 107 places, 73 transitions, 246 flow. Second operand 10 states and 716 transitions. [2021-10-15 19:52:44,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 85 transitions, 395 flow [2021-10-15 19:52:44,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 85 transitions, 334 flow, removed 28 selfloop flow, removed 10 redundant places. [2021-10-15 19:52:44,061 INFO L242 Difference]: Finished difference. Result has 101 places, 73 transitions, 242 flow [2021-10-15 19:52:44,062 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=242, PETRI_PLACES=101, PETRI_TRANSITIONS=73} [2021-10-15 19:52:44,062 INFO L334 CegarLoopForPetriNet]: 79 programPoint places, 22 predicate places. [2021-10-15 19:52:44,062 INFO L470 AbstractCegarLoop]: Abstraction has has 101 places, 73 transitions, 242 flow [2021-10-15 19:52:44,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.57142857142857) internal successors, (494), 7 states have internal predecessors, (494), 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) [2021-10-15 19:52:44,064 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:52:44,065 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] [2021-10-15 19:52:44,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-15 19:52:44,069 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-15 19:52:44,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:52:44,071 INFO L82 PathProgramCache]: Analyzing trace with hash 399519110, now seen corresponding path program 1 times [2021-10-15 19:52:44,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:52:44,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504444664] [2021-10-15 19:52:44,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:52:44,074 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:52:44,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:52:44,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:52:44,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:52:44,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504444664] [2021-10-15 19:52:44,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504444664] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:52:44,292 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:52:44,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-15 19:52:44,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672920467] [2021-10-15 19:52:44,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-15 19:52:44,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:52:44,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-15 19:52:44,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-15 19:52:44,302 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 85 [2021-10-15 19:52:44,303 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 73 transitions, 242 flow. Second operand has 7 states, 7 states have (on average 68.71428571428571) internal successors, (481), 7 states have internal predecessors, (481), 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) [2021-10-15 19:52:44,303 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:52:44,303 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 85 [2021-10-15 19:52:44,303 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:52:44,705 INFO L129 PetriNetUnfolder]: 63/291 cut-off events. [2021-10-15 19:52:44,705 INFO L130 PetriNetUnfolder]: For 669/879 co-relation queries the response was YES. [2021-10-15 19:52:44,707 INFO L84 FinitePrefix]: Finished finitePrefix Result has 810 conditions, 291 events. 63/291 cut-off events. For 669/879 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1337 event pairs, 5 based on Foata normal form. 9/296 useless extension candidates. Maximal degree in co-relation 755. Up to 66 conditions per place. [2021-10-15 19:52:44,710 INFO L132 encePairwiseOnDemand]: 73/85 looper letters, 22 selfloop transitions, 14 changer transitions 27/118 dead transitions. [2021-10-15 19:52:44,710 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 118 transitions, 690 flow [2021-10-15 19:52:44,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-15 19:52:44,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-15 19:52:44,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1197 transitions. [2021-10-15 19:52:44,715 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8283737024221454 [2021-10-15 19:52:44,715 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1197 transitions. [2021-10-15 19:52:44,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1197 transitions. [2021-10-15 19:52:44,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:52:44,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1197 transitions. [2021-10-15 19:52:44,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 70.41176470588235) internal successors, (1197), 17 states have internal predecessors, (1197), 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) [2021-10-15 19:52:44,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 85.0) internal successors, (1530), 18 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:52:44,725 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 85.0) internal successors, (1530), 18 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:52:44,725 INFO L186 Difference]: Start difference. First operand has 101 places, 73 transitions, 242 flow. Second operand 17 states and 1197 transitions. [2021-10-15 19:52:44,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 118 transitions, 690 flow [2021-10-15 19:52:44,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 118 transitions, 608 flow, removed 32 selfloop flow, removed 9 redundant places. [2021-10-15 19:52:44,732 INFO L242 Difference]: Finished difference. Result has 117 places, 82 transitions, 382 flow [2021-10-15 19:52:44,733 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=382, PETRI_PLACES=117, PETRI_TRANSITIONS=82} [2021-10-15 19:52:44,733 INFO L334 CegarLoopForPetriNet]: 79 programPoint places, 38 predicate places. [2021-10-15 19:52:44,733 INFO L470 AbstractCegarLoop]: Abstraction has has 117 places, 82 transitions, 382 flow [2021-10-15 19:52:44,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 68.71428571428571) internal successors, (481), 7 states have internal predecessors, (481), 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) [2021-10-15 19:52:44,733 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:52:44,734 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] [2021-10-15 19:52:44,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-15 19:52:44,734 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-15 19:52:44,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:52:44,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1934545734, now seen corresponding path program 1 times [2021-10-15 19:52:44,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:52:44,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876888627] [2021-10-15 19:52:44,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:52:44,747 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:52:44,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:52:44,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:52:44,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:52:44,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876888627] [2021-10-15 19:52:44,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876888627] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:52:44,898 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:52:44,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-15 19:52:44,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204101873] [2021-10-15 19:52:44,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-15 19:52:44,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:52:44,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-15 19:52:44,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-15 19:52:44,902 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 85 [2021-10-15 19:52:44,903 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 82 transitions, 382 flow. Second operand has 8 states, 8 states have (on average 68.625) internal successors, (549), 8 states have internal predecessors, (549), 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) [2021-10-15 19:52:44,903 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:52:44,903 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 85 [2021-10-15 19:52:44,903 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:52:45,058 INFO L129 PetriNetUnfolder]: 39/209 cut-off events. [2021-10-15 19:52:45,058 INFO L130 PetriNetUnfolder]: For 1628/1983 co-relation queries the response was YES. [2021-10-15 19:52:45,060 INFO L84 FinitePrefix]: Finished finitePrefix Result has 833 conditions, 209 events. 39/209 cut-off events. For 1628/1983 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 835 event pairs, 0 based on Foata normal form. 10/216 useless extension candidates. Maximal degree in co-relation 776. Up to 40 conditions per place. [2021-10-15 19:52:45,062 INFO L132 encePairwiseOnDemand]: 75/85 looper letters, 15 selfloop transitions, 9 changer transitions 27/106 dead transitions. [2021-10-15 19:52:45,062 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 106 transitions, 834 flow [2021-10-15 19:52:45,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-15 19:52:45,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-15 19:52:45,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 775 transitions. [2021-10-15 19:52:45,066 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8288770053475936 [2021-10-15 19:52:45,066 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 775 transitions. [2021-10-15 19:52:45,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 775 transitions. [2021-10-15 19:52:45,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:52:45,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 775 transitions. [2021-10-15 19:52:45,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 70.45454545454545) internal successors, (775), 11 states have internal predecessors, (775), 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) [2021-10-15 19:52:45,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 85.0) internal successors, (1020), 12 states have internal predecessors, (1020), 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) [2021-10-15 19:52:45,073 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 85.0) internal successors, (1020), 12 states have internal predecessors, (1020), 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) [2021-10-15 19:52:45,073 INFO L186 Difference]: Start difference. First operand has 117 places, 82 transitions, 382 flow. Second operand 11 states and 775 transitions. [2021-10-15 19:52:45,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 106 transitions, 834 flow [2021-10-15 19:52:45,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 106 transitions, 658 flow, removed 88 selfloop flow, removed 12 redundant places. [2021-10-15 19:52:45,087 INFO L242 Difference]: Finished difference. Result has 111 places, 77 transitions, 327 flow [2021-10-15 19:52:45,087 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=327, PETRI_PLACES=111, PETRI_TRANSITIONS=77} [2021-10-15 19:52:45,087 INFO L334 CegarLoopForPetriNet]: 79 programPoint places, 32 predicate places. [2021-10-15 19:52:45,088 INFO L470 AbstractCegarLoop]: Abstraction has has 111 places, 77 transitions, 327 flow [2021-10-15 19:52:45,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 68.625) internal successors, (549), 8 states have internal predecessors, (549), 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) [2021-10-15 19:52:45,088 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:52:45,088 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] [2021-10-15 19:52:45,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-15 19:52:45,089 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-15 19:52:45,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:52:45,089 INFO L82 PathProgramCache]: Analyzing trace with hash 890490647, now seen corresponding path program 1 times [2021-10-15 19:52:45,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:52:45,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938265673] [2021-10-15 19:52:45,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:52:45,090 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:52:45,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:52:45,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:52:45,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:52:45,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938265673] [2021-10-15 19:52:45,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938265673] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:52:45,204 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:52:45,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-15 19:52:45,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525102778] [2021-10-15 19:52:45,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-15 19:52:45,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:52:45,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-15 19:52:45,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-15 19:52:45,208 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 85 [2021-10-15 19:52:45,209 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 77 transitions, 327 flow. Second operand has 7 states, 7 states have (on average 72.28571428571429) internal successors, (506), 7 states have internal predecessors, (506), 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) [2021-10-15 19:52:45,209 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:52:45,210 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 85 [2021-10-15 19:52:45,210 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:52:45,375 INFO L129 PetriNetUnfolder]: 22/139 cut-off events. [2021-10-15 19:52:45,379 INFO L130 PetriNetUnfolder]: For 576/625 co-relation queries the response was YES. [2021-10-15 19:52:45,380 INFO L84 FinitePrefix]: Finished finitePrefix Result has 463 conditions, 139 events. 22/139 cut-off events. For 576/625 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 340 event pairs, 4 based on Foata normal form. 5/144 useless extension candidates. Maximal degree in co-relation 420. Up to 25 conditions per place. [2021-10-15 19:52:45,381 INFO L132 encePairwiseOnDemand]: 77/85 looper letters, 6 selfloop transitions, 4 changer transitions 20/88 dead transitions. [2021-10-15 19:52:45,382 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 88 transitions, 461 flow [2021-10-15 19:52:45,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-15 19:52:45,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-15 19:52:45,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 734 transitions. [2021-10-15 19:52:45,385 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8635294117647059 [2021-10-15 19:52:45,386 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 734 transitions. [2021-10-15 19:52:45,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 734 transitions. [2021-10-15 19:52:45,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:52:45,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 734 transitions. [2021-10-15 19:52:45,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 73.4) internal successors, (734), 10 states have internal predecessors, (734), 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) [2021-10-15 19:52:45,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 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) [2021-10-15 19:52:45,396 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 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) [2021-10-15 19:52:45,396 INFO L186 Difference]: Start difference. First operand has 111 places, 77 transitions, 327 flow. Second operand 10 states and 734 transitions. [2021-10-15 19:52:45,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 88 transitions, 461 flow [2021-10-15 19:52:45,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 88 transitions, 390 flow, removed 24 selfloop flow, removed 12 redundant places. [2021-10-15 19:52:45,403 INFO L242 Difference]: Finished difference. Result has 110 places, 68 transitions, 252 flow [2021-10-15 19:52:45,403 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=252, PETRI_PLACES=110, PETRI_TRANSITIONS=68} [2021-10-15 19:52:45,403 INFO L334 CegarLoopForPetriNet]: 79 programPoint places, 31 predicate places. [2021-10-15 19:52:45,404 INFO L470 AbstractCegarLoop]: Abstraction has has 110 places, 68 transitions, 252 flow [2021-10-15 19:52:45,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.28571428571429) internal successors, (506), 7 states have internal predecessors, (506), 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) [2021-10-15 19:52:45,404 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:52:45,405 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] [2021-10-15 19:52:45,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-15 19:52:45,406 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-15 19:52:45,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:52:45,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1826053157, now seen corresponding path program 1 times [2021-10-15 19:52:45,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:52:45,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608405972] [2021-10-15 19:52:45,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:52:45,407 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:52:45,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:52:45,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:52:45,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:52:45,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608405972] [2021-10-15 19:52:45,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608405972] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:52:45,582 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:52:45,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-15 19:52:45,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998446430] [2021-10-15 19:52:45,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 19:52:45,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:52:45,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 19:52:45,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:52:45,591 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 85 [2021-10-15 19:52:45,592 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 68 transitions, 252 flow. Second operand has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 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) [2021-10-15 19:52:45,592 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:52:45,592 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 85 [2021-10-15 19:52:45,592 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:52:45,746 INFO L129 PetriNetUnfolder]: 106/334 cut-off events. [2021-10-15 19:52:45,746 INFO L130 PetriNetUnfolder]: For 673/694 co-relation queries the response was YES. [2021-10-15 19:52:45,749 INFO L84 FinitePrefix]: Finished finitePrefix Result has 824 conditions, 334 events. 106/334 cut-off events. For 673/694 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1603 event pairs, 14 based on Foata normal form. 8/331 useless extension candidates. Maximal degree in co-relation 760. Up to 84 conditions per place. [2021-10-15 19:52:45,751 INFO L132 encePairwiseOnDemand]: 76/85 looper letters, 10 selfloop transitions, 6 changer transitions 19/93 dead transitions. [2021-10-15 19:52:45,751 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 93 transitions, 372 flow [2021-10-15 19:52:45,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-15 19:52:45,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-15 19:52:45,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 676 transitions. [2021-10-15 19:52:45,755 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8836601307189542 [2021-10-15 19:52:45,755 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 676 transitions. [2021-10-15 19:52:45,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 676 transitions. [2021-10-15 19:52:45,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:52:45,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 676 transitions. [2021-10-15 19:52:45,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 75.11111111111111) internal successors, (676), 9 states have internal predecessors, (676), 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) [2021-10-15 19:52:45,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 85.0) internal successors, (850), 10 states have internal predecessors, (850), 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) [2021-10-15 19:52:45,765 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 85.0) internal successors, (850), 10 states have internal predecessors, (850), 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) [2021-10-15 19:52:45,766 INFO L186 Difference]: Start difference. First operand has 110 places, 68 transitions, 252 flow. Second operand 9 states and 676 transitions. [2021-10-15 19:52:45,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 93 transitions, 372 flow [2021-10-15 19:52:45,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 93 transitions, 322 flow, removed 10 selfloop flow, removed 17 redundant places. [2021-10-15 19:52:45,772 INFO L242 Difference]: Finished difference. Result has 100 places, 71 transitions, 258 flow [2021-10-15 19:52:45,772 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=258, PETRI_PLACES=100, PETRI_TRANSITIONS=71} [2021-10-15 19:52:45,773 INFO L334 CegarLoopForPetriNet]: 79 programPoint places, 21 predicate places. [2021-10-15 19:52:45,773 INFO L470 AbstractCegarLoop]: Abstraction has has 100 places, 71 transitions, 258 flow [2021-10-15 19:52:45,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 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) [2021-10-15 19:52:45,773 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:52:45,774 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] [2021-10-15 19:52:45,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-15 19:52:45,775 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-15 19:52:45,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:52:45,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1631286102, now seen corresponding path program 1 times [2021-10-15 19:52:45,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:52:45,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354620894] [2021-10-15 19:52:45,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:52:45,777 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:52:45,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:52:45,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:52:45,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:52:45,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354620894] [2021-10-15 19:52:45,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354620894] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:52:45,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:52:45,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-15 19:52:45,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637356833] [2021-10-15 19:52:45,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-15 19:52:45,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:52:45,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-15 19:52:45,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-15 19:52:45,921 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 85 [2021-10-15 19:52:45,922 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 71 transitions, 258 flow. Second operand has 7 states, 7 states have (on average 72.14285714285714) internal successors, (505), 7 states have internal predecessors, (505), 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) [2021-10-15 19:52:45,922 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:52:45,922 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 85 [2021-10-15 19:52:45,922 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:52:46,066 INFO L129 PetriNetUnfolder]: 57/216 cut-off events. [2021-10-15 19:52:46,066 INFO L130 PetriNetUnfolder]: For 435/481 co-relation queries the response was YES. [2021-10-15 19:52:46,067 INFO L84 FinitePrefix]: Finished finitePrefix Result has 697 conditions, 216 events. 57/216 cut-off events. For 435/481 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 805 event pairs, 4 based on Foata normal form. 14/227 useless extension candidates. Maximal degree in co-relation 643. Up to 76 conditions per place. [2021-10-15 19:52:46,069 INFO L132 encePairwiseOnDemand]: 76/85 looper letters, 10 selfloop transitions, 9 changer transitions 19/96 dead transitions. [2021-10-15 19:52:46,069 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 96 transitions, 511 flow [2021-10-15 19:52:46,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-15 19:52:46,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-15 19:52:46,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 750 transitions. [2021-10-15 19:52:46,073 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8823529411764706 [2021-10-15 19:52:46,073 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 750 transitions. [2021-10-15 19:52:46,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 750 transitions. [2021-10-15 19:52:46,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:52:46,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 750 transitions. [2021-10-15 19:52:46,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 75.0) internal successors, (750), 10 states have internal predecessors, (750), 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) [2021-10-15 19:52:46,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 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) [2021-10-15 19:52:46,079 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 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) [2021-10-15 19:52:46,080 INFO L186 Difference]: Start difference. First operand has 100 places, 71 transitions, 258 flow. Second operand 10 states and 750 transitions. [2021-10-15 19:52:46,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 96 transitions, 511 flow [2021-10-15 19:52:46,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 96 transitions, 487 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-10-15 19:52:46,085 INFO L242 Difference]: Finished difference. Result has 106 places, 74 transitions, 326 flow [2021-10-15 19:52:46,085 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=326, PETRI_PLACES=106, PETRI_TRANSITIONS=74} [2021-10-15 19:52:46,086 INFO L334 CegarLoopForPetriNet]: 79 programPoint places, 27 predicate places. [2021-10-15 19:52:46,086 INFO L470 AbstractCegarLoop]: Abstraction has has 106 places, 74 transitions, 326 flow [2021-10-15 19:52:46,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.14285714285714) internal successors, (505), 7 states have internal predecessors, (505), 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) [2021-10-15 19:52:46,086 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:52:46,087 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] [2021-10-15 19:52:46,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-15 19:52:46,087 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-15 19:52:46,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:52:46,088 INFO L82 PathProgramCache]: Analyzing trace with hash 623859333, now seen corresponding path program 1 times [2021-10-15 19:52:46,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:52:46,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624706431] [2021-10-15 19:52:46,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:52:46,088 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:52:46,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:52:46,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:52:46,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:52:46,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624706431] [2021-10-15 19:52:46,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624706431] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:52:46,227 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:52:46,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-15 19:52:46,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144345344] [2021-10-15 19:52:46,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-15 19:52:46,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:52:46,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-15 19:52:46,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-15 19:52:46,231 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 85 [2021-10-15 19:52:46,232 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 74 transitions, 326 flow. Second operand has 8 states, 8 states have (on average 72.125) internal successors, (577), 8 states have internal predecessors, (577), 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) [2021-10-15 19:52:46,232 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:52:46,232 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 85 [2021-10-15 19:52:46,232 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:52:46,384 INFO L129 PetriNetUnfolder]: 16/114 cut-off events. [2021-10-15 19:52:46,384 INFO L130 PetriNetUnfolder]: For 405/445 co-relation queries the response was YES. [2021-10-15 19:52:46,385 INFO L84 FinitePrefix]: Finished finitePrefix Result has 390 conditions, 114 events. 16/114 cut-off events. For 405/445 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 216 event pairs, 0 based on Foata normal form. 14/127 useless extension candidates. Maximal degree in co-relation 350. Up to 30 conditions per place. [2021-10-15 19:52:46,386 INFO L132 encePairwiseOnDemand]: 76/85 looper letters, 4 selfloop transitions, 12 changer transitions 13/87 dead transitions. [2021-10-15 19:52:46,386 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 87 transitions, 510 flow [2021-10-15 19:52:46,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-15 19:52:46,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-15 19:52:46,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 812 transitions. [2021-10-15 19:52:46,390 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8684491978609625 [2021-10-15 19:52:46,390 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 812 transitions. [2021-10-15 19:52:46,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 812 transitions. [2021-10-15 19:52:46,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:52:46,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 812 transitions. [2021-10-15 19:52:46,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 73.81818181818181) internal successors, (812), 11 states have internal predecessors, (812), 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) [2021-10-15 19:52:46,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 85.0) internal successors, (1020), 12 states have internal predecessors, (1020), 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) [2021-10-15 19:52:46,397 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 85.0) internal successors, (1020), 12 states have internal predecessors, (1020), 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) [2021-10-15 19:52:46,397 INFO L186 Difference]: Start difference. First operand has 106 places, 74 transitions, 326 flow. Second operand 11 states and 812 transitions. [2021-10-15 19:52:46,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 87 transitions, 510 flow [2021-10-15 19:52:46,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 87 transitions, 369 flow, removed 53 selfloop flow, removed 17 redundant places. [2021-10-15 19:52:46,403 INFO L242 Difference]: Finished difference. Result has 101 places, 74 transitions, 270 flow [2021-10-15 19:52:46,403 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=270, PETRI_PLACES=101, PETRI_TRANSITIONS=74} [2021-10-15 19:52:46,403 INFO L334 CegarLoopForPetriNet]: 79 programPoint places, 22 predicate places. [2021-10-15 19:52:46,404 INFO L470 AbstractCegarLoop]: Abstraction has has 101 places, 74 transitions, 270 flow [2021-10-15 19:52:46,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 72.125) internal successors, (577), 8 states have internal predecessors, (577), 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) [2021-10-15 19:52:46,404 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:52:46,404 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] [2021-10-15 19:52:46,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-15 19:52:46,405 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-15 19:52:46,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:52:46,406 INFO L82 PathProgramCache]: Analyzing trace with hash 135323022, now seen corresponding path program 1 times [2021-10-15 19:52:46,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:52:46,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233759232] [2021-10-15 19:52:46,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:52:46,406 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:52:46,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:52:46,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:52:46,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:52:46,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233759232] [2021-10-15 19:52:46,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233759232] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:52:46,523 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:52:46,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-15 19:52:46,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655188910] [2021-10-15 19:52:46,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-15 19:52:46,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:52:46,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-15 19:52:46,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-15 19:52:46,526 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 85 [2021-10-15 19:52:46,527 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 74 transitions, 270 flow. Second operand has 7 states, 7 states have (on average 69.0) internal successors, (483), 7 states have internal predecessors, (483), 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) [2021-10-15 19:52:46,527 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:52:46,528 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 85 [2021-10-15 19:52:46,528 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:52:46,612 INFO L129 PetriNetUnfolder]: 5/83 cut-off events. [2021-10-15 19:52:46,612 INFO L130 PetriNetUnfolder]: For 77/83 co-relation queries the response was YES. [2021-10-15 19:52:46,612 INFO L84 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 83 events. 5/83 cut-off events. For 77/83 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 85 event pairs, 0 based on Foata normal form. 2/84 useless extension candidates. Maximal degree in co-relation 157. Up to 11 conditions per place. [2021-10-15 19:52:46,613 INFO L132 encePairwiseOnDemand]: 75/85 looper letters, 0 selfloop transitions, 0 changer transitions 72/72 dead transitions. [2021-10-15 19:52:46,613 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 72 transitions, 292 flow [2021-10-15 19:52:46,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-15 19:52:46,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-15 19:52:46,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 550 transitions. [2021-10-15 19:52:46,616 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8088235294117647 [2021-10-15 19:52:46,616 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 550 transitions. [2021-10-15 19:52:46,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 550 transitions. [2021-10-15 19:52:46,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:52:46,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 550 transitions. [2021-10-15 19:52:46,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 68.75) internal successors, (550), 8 states have internal predecessors, (550), 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) [2021-10-15 19:52:46,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 85.0) internal successors, (765), 9 states have internal predecessors, (765), 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) [2021-10-15 19:52:46,622 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 85.0) internal successors, (765), 9 states have internal predecessors, (765), 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) [2021-10-15 19:52:46,623 INFO L186 Difference]: Start difference. First operand has 101 places, 74 transitions, 270 flow. Second operand 8 states and 550 transitions. [2021-10-15 19:52:46,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 72 transitions, 292 flow [2021-10-15 19:52:46,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 72 transitions, 210 flow, removed 22 selfloop flow, removed 15 redundant places. [2021-10-15 19:52:46,625 INFO L242 Difference]: Finished difference. Result has 87 places, 0 transitions, 0 flow [2021-10-15 19:52:46,626 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=87, PETRI_TRANSITIONS=0} [2021-10-15 19:52:46,626 INFO L334 CegarLoopForPetriNet]: 79 programPoint places, 8 predicate places. [2021-10-15 19:52:46,627 INFO L470 AbstractCegarLoop]: Abstraction has has 87 places, 0 transitions, 0 flow [2021-10-15 19:52:46,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.0) internal successors, (483), 7 states have internal predecessors, (483), 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) [2021-10-15 19:52:46,630 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:52:46,630 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-15 19:52:46,630 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-15 19:52:46,630 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-15 19:52:46,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-15 19:52:46,641 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-15 19:52:46,641 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:52:46,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:52:46 BasicIcfg [2021-10-15 19:52:46,644 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:52:46,645 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:52:46,646 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:52:46,646 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:52:46,646 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:52:41" (3/4) ... [2021-10-15 19:52:46,649 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-15 19:52:46,658 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-15 19:52:46,659 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-15 19:52:46,659 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-10-15 19:52:46,666 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-15 19:52:46,667 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-15 19:52:46,667 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:52:46,667 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:52:46,723 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bdd4f67-0fd3-45d2-aa0b-540ab5f8cdf0/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 19:52:46,723 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:52:46,725 INFO L168 Benchmark]: Toolchain (without parser) took 6194.74 ms. Allocated memory was 115.3 MB in the beginning and 165.7 MB in the end (delta: 50.3 MB). Free memory was 81.4 MB in the beginning and 114.4 MB in the end (delta: -33.1 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. [2021-10-15 19:52:46,725 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 83.9 MB. Free memory was 39.2 MB in the beginning and 39.1 MB in the end (delta: 42.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:52:46,726 INFO L168 Benchmark]: CACSL2BoogieTranslator took 688.11 ms. Allocated memory is still 115.3 MB. Free memory was 81.1 MB in the beginning and 82.2 MB in the end (delta: -1.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-15 19:52:46,727 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.24 ms. Allocated memory is still 115.3 MB. Free memory was 82.2 MB in the beginning and 80.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:52:46,727 INFO L168 Benchmark]: Boogie Preprocessor took 26.44 ms. Allocated memory is still 115.3 MB. Free memory was 80.1 MB in the beginning and 78.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:52:46,727 INFO L168 Benchmark]: RCFGBuilder took 405.62 ms. Allocated memory is still 115.3 MB. Free memory was 78.4 MB in the beginning and 66.4 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-15 19:52:46,728 INFO L168 Benchmark]: TraceAbstraction took 4911.75 ms. Allocated memory was 115.3 MB in the beginning and 165.7 MB in the end (delta: 50.3 MB). Free memory was 65.9 MB in the beginning and 117.6 MB in the end (delta: -51.7 MB). Peak memory consumption was 300.8 kB. Max. memory is 16.1 GB. [2021-10-15 19:52:46,728 INFO L168 Benchmark]: Witness Printer took 77.92 ms. Allocated memory is still 165.7 MB. Free memory was 117.6 MB in the beginning and 114.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-15 19:52:46,731 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 83.9 MB. Free memory was 39.2 MB in the beginning and 39.1 MB in the end (delta: 42.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 688.11 ms. Allocated memory is still 115.3 MB. Free memory was 81.1 MB in the beginning and 82.2 MB in the end (delta: -1.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 65.24 ms. Allocated memory is still 115.3 MB. Free memory was 82.2 MB in the beginning and 80.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.44 ms. Allocated memory is still 115.3 MB. Free memory was 80.1 MB in the beginning and 78.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 405.62 ms. Allocated memory is still 115.3 MB. Free memory was 78.4 MB in the beginning and 66.4 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4911.75 ms. Allocated memory was 115.3 MB in the beginning and 165.7 MB in the end (delta: 50.3 MB). Free memory was 65.9 MB in the beginning and 117.6 MB in the end (delta: -51.7 MB). Peak memory consumption was 300.8 kB. Max. memory is 16.1 GB. * Witness Printer took 77.92 ms. Allocated memory is still 165.7 MB. Free memory was 117.6 MB in the beginning and 114.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms 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, 108 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 25.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4768.5ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 2454.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 71.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 115 SDtfs, 285 SDslu, 364 SDs, 0 SdLazy, 362 SolverSat, 63 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 320.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 140 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 1349.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=382occurred in iteration=4, InterpolantAutomatonStates: 112, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 79.4ms SsaConstructionTime, 313.0ms SatisfiabilityAnalysisTime, 1516.0ms InterpolantComputationTime, 560 NumberOfCodeBlocks, 560 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 550 ConstructedInterpolants, 0 QuantifiedInterpolants, 2180 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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! [2021-10-15 19:52:46,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bdd4f67-0fd3-45d2-aa0b-540ab5f8cdf0/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...