./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/array-eq-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f0a57a-3db4-4675-8128-65a337ae94fb/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f0a57a-3db4-4675-8128-65a337ae94fb/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f0a57a-3db4-4675-8128-65a337ae94fb/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f0a57a-3db4-4675-8128-65a337ae94fb/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/array-eq-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f0a57a-3db4-4675-8128-65a337ae94fb/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f0a57a-3db4-4675-8128-65a337ae94fb/bin/uautomizer-UnR33cPsHg --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 1a172ae6dd3a5207c1a2580ce55cc24497fcf78586be62b7482a56f18aa6beb2 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:06:30,060 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:06:30,071 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:06:30,124 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:06:30,125 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:06:30,126 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:06:30,129 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:06:30,132 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:06:30,135 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:06:30,136 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:06:30,138 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:06:30,140 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:06:30,141 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:06:30,143 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:06:30,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:06:30,147 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:06:30,148 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:06:30,149 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:06:30,152 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:06:30,155 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:06:30,158 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:06:30,160 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:06:30,161 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:06:30,163 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:06:30,167 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:06:30,168 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:06:30,169 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:06:30,170 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:06:30,171 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:06:30,173 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:06:30,173 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:06:30,175 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:06:30,176 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:06:30,177 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:06:30,179 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:06:30,179 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:06:30,181 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:06:30,181 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:06:30,182 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:06:30,183 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:06:30,184 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:06:30,186 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f0a57a-3db4-4675-8128-65a337ae94fb/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 09:06:30,215 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:06:30,216 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:06:30,216 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:06:30,216 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:06:30,218 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:06:30,218 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:06:30,219 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:06:30,219 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:06:30,219 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:06:30,220 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:06:30,220 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:06:30,221 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:06:30,221 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:06:30,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:06:30,222 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:06:30,222 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:06:30,222 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:06:30,222 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:06:30,223 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:06:30,223 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:06:30,223 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:06:30,223 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:06:30,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:06:30,224 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:06:30,224 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:06:30,225 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:06:30,225 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:06:30,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:06:30,226 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:06:30,226 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:06:30,226 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:06:30,226 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:06:30,227 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_30f0a57a-3db4-4675-8128-65a337ae94fb/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f0a57a-3db4-4675-8128-65a337ae94fb/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a172ae6dd3a5207c1a2580ce55cc24497fcf78586be62b7482a56f18aa6beb2 [2021-10-28 09:06:30,561 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:06:30,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:06:30,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:06:30,609 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:06:30,610 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:06:30,612 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f0a57a-3db4-4675-8128-65a337ae94fb/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/weaver/array-eq-symm.wvr.c [2021-10-28 09:06:30,695 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f0a57a-3db4-4675-8128-65a337ae94fb/bin/uautomizer-UnR33cPsHg/data/3ffd79290/d58d938f38324c0f8a3433011cf11290/FLAG7a357edd7 [2021-10-28 09:06:31,342 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:06:31,343 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f0a57a-3db4-4675-8128-65a337ae94fb/sv-benchmarks/c/weaver/array-eq-symm.wvr.c [2021-10-28 09:06:31,358 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f0a57a-3db4-4675-8128-65a337ae94fb/bin/uautomizer-UnR33cPsHg/data/3ffd79290/d58d938f38324c0f8a3433011cf11290/FLAG7a357edd7 [2021-10-28 09:06:31,658 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f0a57a-3db4-4675-8128-65a337ae94fb/bin/uautomizer-UnR33cPsHg/data/3ffd79290/d58d938f38324c0f8a3433011cf11290 [2021-10-28 09:06:31,662 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:06:31,672 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:06:31,674 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:06:31,674 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:06:31,679 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:06:31,680 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:06:31" (1/1) ... [2021-10-28 09:06:31,681 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63a7d811 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:31, skipping insertion in model container [2021-10-28 09:06:31,682 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:06:31" (1/1) ... [2021-10-28 09:06:31,690 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:06:31,711 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:06:31,914 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_30f0a57a-3db4-4675-8128-65a337ae94fb/sv-benchmarks/c/weaver/array-eq-symm.wvr.c[2251,2264] [2021-10-28 09:06:31,922 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:06:31,932 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:06:31,952 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_30f0a57a-3db4-4675-8128-65a337ae94fb/sv-benchmarks/c/weaver/array-eq-symm.wvr.c[2251,2264] [2021-10-28 09:06:31,956 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:06:31,971 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:06:31,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:31 WrapperNode [2021-10-28 09:06:31,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:06:31,973 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:06:31,973 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:06:31,973 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:06:31,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:31" (1/1) ... [2021-10-28 09:06:31,988 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:31" (1/1) ... [2021-10-28 09:06:32,014 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:06:32,015 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:06:32,015 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:06:32,016 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:06:32,025 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:31" (1/1) ... [2021-10-28 09:06:32,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:31" (1/1) ... [2021-10-28 09:06:32,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:31" (1/1) ... [2021-10-28 09:06:32,029 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:31" (1/1) ... [2021-10-28 09:06:32,040 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:31" (1/1) ... [2021-10-28 09:06:32,046 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:31" (1/1) ... [2021-10-28 09:06:32,048 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:31" (1/1) ... [2021-10-28 09:06:32,052 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:06:32,053 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:06:32,053 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:06:32,054 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:06:32,055 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:31" (1/1) ... [2021-10-28 09:06:32,071 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:06:32,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f0a57a-3db4-4675-8128-65a337ae94fb/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:06:32,101 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f0a57a-3db4-4675-8128-65a337ae94fb/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:06:32,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f0a57a-3db4-4675-8128-65a337ae94fb/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:06:32,150 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-28 09:06:32,151 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-28 09:06:32,151 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-28 09:06:32,151 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-28 09:06:32,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:06:32,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:06:32,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 09:06:32,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 09:06:32,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:06:32,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:06:32,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 09:06:32,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:06:32,154 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-28 09:06:32,664 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:06:32,665 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-10-28 09:06:32,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:06:32 BoogieIcfgContainer [2021-10-28 09:06:32,667 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:06:32,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:06:32,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:06:32,674 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:06:32,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:06:31" (1/3) ... [2021-10-28 09:06:32,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30f3b923 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:06:32, skipping insertion in model container [2021-10-28 09:06:32,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:31" (2/3) ... [2021-10-28 09:06:32,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30f3b923 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:06:32, skipping insertion in model container [2021-10-28 09:06:32,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:06:32" (3/3) ... [2021-10-28 09:06:32,678 INFO L111 eAbstractionObserver]: Analyzing ICFG array-eq-symm.wvr.c [2021-10-28 09:06:32,684 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-28 09:06:32,684 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:06:32,684 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 09:06:32,685 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-28 09:06:32,736 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,737 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,737 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,737 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,738 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,738 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,738 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,739 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,739 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,739 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,740 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,740 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,740 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,741 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,741 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,741 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,741 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,742 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,742 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,742 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,743 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,743 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,743 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,743 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,744 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,744 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,744 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,745 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,745 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,745 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,746 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,747 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,747 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,747 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,748 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,748 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,748 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,749 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,749 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,749 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,750 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,750 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,750 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,750 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,751 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,751 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,751 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,752 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,752 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,752 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,753 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,753 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,753 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,753 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,754 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,754 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,754 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,755 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,755 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,755 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,759 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,760 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,760 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,761 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,761 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,766 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,766 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,767 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,767 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,767 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:06:32,775 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-28 09:06:32,833 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:06:32,840 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 09:06:32,840 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-28 09:06:32,857 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 148 places, 156 transitions, 328 flow [2021-10-28 09:06:32,933 INFO L129 PetriNetUnfolder]: 15/154 cut-off events. [2021-10-28 09:06:32,933 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-28 09:06:32,938 INFO L84 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 154 events. 15/154 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 117 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 116. Up to 3 conditions per place. [2021-10-28 09:06:32,939 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 156 transitions, 328 flow [2021-10-28 09:06:32,946 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 146 transitions, 304 flow [2021-10-28 09:06:32,999 INFO L129 PetriNetUnfolder]: 15/145 cut-off events. [2021-10-28 09:06:32,999 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-28 09:06:32,999 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:06:33,000 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:33,001 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:06:33,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:06:33,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1395795278, now seen corresponding path program 1 times [2021-10-28 09:06:33,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:06:33,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971598886] [2021-10-28 09:06:33,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:33,019 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:06:33,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:33,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:06:33,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:06:33,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971598886] [2021-10-28 09:06:33,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971598886] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:06:33,373 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:06:33,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:06:33,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325026540] [2021-10-28 09:06:33,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 09:06:33,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:06:33,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 09:06:33,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 09:06:33,407 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 156 [2021-10-28 09:06:33,411 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 146 transitions, 304 flow. Second operand has 2 states, 2 states have (on average 147.5) internal successors, (295), 2 states have internal predecessors, (295), 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) [2021-10-28 09:06:33,411 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:06:33,412 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 156 [2021-10-28 09:06:33,413 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:06:33,451 INFO L129 PetriNetUnfolder]: 6/137 cut-off events. [2021-10-28 09:06:33,452 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-28 09:06:33,453 INFO L84 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 137 events. 6/137 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 106 event pairs, 0 based on Foata normal form. 9/135 useless extension candidates. Maximal degree in co-relation 143. Up to 2 conditions per place. [2021-10-28 09:06:33,455 INFO L132 encePairwiseOnDemand]: 147/156 looper letters, 0 selfloop transitions, 0 changer transitions 5/137 dead transitions. [2021-10-28 09:06:33,455 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 137 transitions, 286 flow [2021-10-28 09:06:33,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 09:06:33,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-28 09:06:33,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 301 transitions. [2021-10-28 09:06:33,470 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9647435897435898 [2021-10-28 09:06:33,471 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 301 transitions. [2021-10-28 09:06:33,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 301 transitions. [2021-10-28 09:06:33,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:06:33,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 301 transitions. [2021-10-28 09:06:33,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 150.5) internal successors, (301), 2 states have internal predecessors, (301), 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) [2021-10-28 09:06:33,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 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) [2021-10-28 09:06:33,489 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 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) [2021-10-28 09:06:33,491 INFO L186 Difference]: Start difference. First operand has 138 places, 146 transitions, 304 flow. Second operand 2 states and 301 transitions. [2021-10-28 09:06:33,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 137 transitions, 286 flow [2021-10-28 09:06:33,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 137 transitions, 278 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-10-28 09:06:33,503 INFO L242 Difference]: Finished difference. Result has 135 places, 132 transitions, 268 flow [2021-10-28 09:06:33,505 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=268, PETRI_PLACES=135, PETRI_TRANSITIONS=132} [2021-10-28 09:06:33,507 INFO L334 CegarLoopForPetriNet]: 138 programPoint places, -3 predicate places. [2021-10-28 09:06:33,507 INFO L470 AbstractCegarLoop]: Abstraction has has 135 places, 132 transitions, 268 flow [2021-10-28 09:06:33,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 147.5) internal successors, (295), 2 states have internal predecessors, (295), 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) [2021-10-28 09:06:33,508 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:06:33,508 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:33,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:06:33,509 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:06:33,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:06:33,510 INFO L85 PathProgramCache]: Analyzing trace with hash 828654467, now seen corresponding path program 1 times [2021-10-28 09:06:33,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:06:33,511 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276289775] [2021-10-28 09:06:33,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:33,512 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:06:33,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:33,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:06:33,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:06:33,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276289775] [2021-10-28 09:06:33,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276289775] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:06:33,935 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:06:33,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:06:33,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569926281] [2021-10-28 09:06:33,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:06:33,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:06:33,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:06:33,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:06:33,944 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 156 [2021-10-28 09:06:33,946 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 132 transitions, 268 flow. Second operand has 6 states, 6 states have (on average 111.0) internal successors, (666), 6 states have internal predecessors, (666), 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) [2021-10-28 09:06:33,946 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:06:33,947 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 156 [2021-10-28 09:06:33,947 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:06:34,255 INFO L129 PetriNetUnfolder]: 144/548 cut-off events. [2021-10-28 09:06:34,256 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 09:06:34,262 INFO L84 FinitePrefix]: Finished finitePrefix Result has 816 conditions, 548 events. 144/548 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2680 event pairs, 30 based on Foata normal form. 1/474 useless extension candidates. Maximal degree in co-relation 813. Up to 107 conditions per place. [2021-10-28 09:06:34,267 INFO L132 encePairwiseOnDemand]: 149/156 looper letters, 57 selfloop transitions, 5 changer transitions 3/163 dead transitions. [2021-10-28 09:06:34,269 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 163 transitions, 460 flow [2021-10-28 09:06:34,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:06:34,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-28 09:06:34,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 708 transitions. [2021-10-28 09:06:34,280 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7564102564102564 [2021-10-28 09:06:34,280 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 708 transitions. [2021-10-28 09:06:34,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 708 transitions. [2021-10-28 09:06:34,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:06:34,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 708 transitions. [2021-10-28 09:06:34,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 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) [2021-10-28 09:06:34,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 156.0) internal successors, (1092), 7 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:06:34,296 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 156.0) internal successors, (1092), 7 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:06:34,296 INFO L186 Difference]: Start difference. First operand has 135 places, 132 transitions, 268 flow. Second operand 6 states and 708 transitions. [2021-10-28 09:06:34,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 163 transitions, 460 flow [2021-10-28 09:06:34,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 163 transitions, 460 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-28 09:06:34,310 INFO L242 Difference]: Finished difference. Result has 138 places, 135 transitions, 297 flow [2021-10-28 09:06:34,311 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=297, PETRI_PLACES=138, PETRI_TRANSITIONS=135} [2021-10-28 09:06:34,312 INFO L334 CegarLoopForPetriNet]: 138 programPoint places, 0 predicate places. [2021-10-28 09:06:34,313 INFO L470 AbstractCegarLoop]: Abstraction has has 138 places, 135 transitions, 297 flow [2021-10-28 09:06:34,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 111.0) internal successors, (666), 6 states have internal predecessors, (666), 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) [2021-10-28 09:06:34,314 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:06:34,315 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:34,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:06:34,316 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:06:34,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:06:34,322 INFO L85 PathProgramCache]: Analyzing trace with hash -80087054, now seen corresponding path program 1 times [2021-10-28 09:06:34,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:06:34,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092703700] [2021-10-28 09:06:34,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:34,323 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:06:34,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:34,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:06:34,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:06:34,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092703700] [2021-10-28 09:06:34,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092703700] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:06:34,637 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:06:34,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:06:34,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715198637] [2021-10-28 09:06:34,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:06:34,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:06:34,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:06:34,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:06:34,644 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 156 [2021-10-28 09:06:34,646 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 135 transitions, 297 flow. Second operand has 7 states, 7 states have (on average 113.85714285714286) internal successors, (797), 7 states have internal predecessors, (797), 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) [2021-10-28 09:06:34,646 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:06:34,646 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 156 [2021-10-28 09:06:34,646 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:06:34,996 INFO L129 PetriNetUnfolder]: 84/548 cut-off events. [2021-10-28 09:06:34,996 INFO L130 PetriNetUnfolder]: For 6/9 co-relation queries the response was YES. [2021-10-28 09:06:34,998 INFO L84 FinitePrefix]: Finished finitePrefix Result has 780 conditions, 548 events. 84/548 cut-off events. For 6/9 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2491 event pairs, 24 based on Foata normal form. 0/477 useless extension candidates. Maximal degree in co-relation 773. Up to 69 conditions per place. [2021-10-28 09:06:35,001 INFO L132 encePairwiseOnDemand]: 144/156 looper letters, 53 selfloop transitions, 14 changer transitions 0/165 dead transitions. [2021-10-28 09:06:35,002 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 165 transitions, 497 flow [2021-10-28 09:06:35,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:06:35,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-28 09:06:35,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1167 transitions. [2021-10-28 09:06:35,008 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7480769230769231 [2021-10-28 09:06:35,009 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1167 transitions. [2021-10-28 09:06:35,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1167 transitions. [2021-10-28 09:06:35,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:06:35,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1167 transitions. [2021-10-28 09:06:35,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 116.7) internal successors, (1167), 10 states have internal predecessors, (1167), 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) [2021-10-28 09:06:35,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 156.0) internal successors, (1716), 11 states have internal predecessors, (1716), 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) [2021-10-28 09:06:35,024 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 156.0) internal successors, (1716), 11 states have internal predecessors, (1716), 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) [2021-10-28 09:06:35,031 INFO L186 Difference]: Start difference. First operand has 138 places, 135 transitions, 297 flow. Second operand 10 states and 1167 transitions. [2021-10-28 09:06:35,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 165 transitions, 497 flow [2021-10-28 09:06:35,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 165 transitions, 493 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-10-28 09:06:35,045 INFO L242 Difference]: Finished difference. Result has 146 places, 140 transitions, 354 flow [2021-10-28 09:06:35,045 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=354, PETRI_PLACES=146, PETRI_TRANSITIONS=140} [2021-10-28 09:06:35,046 INFO L334 CegarLoopForPetriNet]: 138 programPoint places, 8 predicate places. [2021-10-28 09:06:35,046 INFO L470 AbstractCegarLoop]: Abstraction has has 146 places, 140 transitions, 354 flow [2021-10-28 09:06:35,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 113.85714285714286) internal successors, (797), 7 states have internal predecessors, (797), 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) [2021-10-28 09:06:35,047 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:06:35,047 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:35,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 09:06:35,048 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:06:35,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:06:35,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1191282200, now seen corresponding path program 1 times [2021-10-28 09:06:35,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:06:35,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812607023] [2021-10-28 09:06:35,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:35,051 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:06:35,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:35,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:06:35,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:06:35,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812607023] [2021-10-28 09:06:35,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812607023] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:06:35,294 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:06:35,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:06:35,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278484986] [2021-10-28 09:06:35,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:06:35,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:06:35,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:06:35,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:06:35,307 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 156 [2021-10-28 09:06:35,309 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 140 transitions, 354 flow. Second operand has 7 states, 7 states have (on average 113.85714285714286) internal successors, (797), 7 states have internal predecessors, (797), 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) [2021-10-28 09:06:35,309 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:06:35,309 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 156 [2021-10-28 09:06:35,309 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:06:35,587 INFO L129 PetriNetUnfolder]: 67/436 cut-off events. [2021-10-28 09:06:35,588 INFO L130 PetriNetUnfolder]: For 52/57 co-relation queries the response was YES. [2021-10-28 09:06:35,590 INFO L84 FinitePrefix]: Finished finitePrefix Result has 680 conditions, 436 events. 67/436 cut-off events. For 52/57 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1911 event pairs, 21 based on Foata normal form. 0/383 useless extension candidates. Maximal degree in co-relation 671. Up to 63 conditions per place. [2021-10-28 09:06:35,594 INFO L132 encePairwiseOnDemand]: 144/156 looper letters, 39 selfloop transitions, 11 changer transitions 15/163 dead transitions. [2021-10-28 09:06:35,595 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 163 transitions, 534 flow [2021-10-28 09:06:35,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:06:35,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-28 09:06:35,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1165 transitions. [2021-10-28 09:06:35,600 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7467948717948718 [2021-10-28 09:06:35,600 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1165 transitions. [2021-10-28 09:06:35,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1165 transitions. [2021-10-28 09:06:35,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:06:35,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1165 transitions. [2021-10-28 09:06:35,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 116.5) internal successors, (1165), 10 states have internal predecessors, (1165), 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) [2021-10-28 09:06:35,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 156.0) internal successors, (1716), 11 states have internal predecessors, (1716), 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) [2021-10-28 09:06:35,615 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 156.0) internal successors, (1716), 11 states have internal predecessors, (1716), 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) [2021-10-28 09:06:35,615 INFO L186 Difference]: Start difference. First operand has 146 places, 140 transitions, 354 flow. Second operand 10 states and 1165 transitions. [2021-10-28 09:06:35,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 163 transitions, 534 flow [2021-10-28 09:06:35,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 163 transitions, 526 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-28 09:06:35,623 INFO L242 Difference]: Finished difference. Result has 153 places, 137 transitions, 359 flow [2021-10-28 09:06:35,624 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=359, PETRI_PLACES=153, PETRI_TRANSITIONS=137} [2021-10-28 09:06:35,624 INFO L334 CegarLoopForPetriNet]: 138 programPoint places, 15 predicate places. [2021-10-28 09:06:35,624 INFO L470 AbstractCegarLoop]: Abstraction has has 153 places, 137 transitions, 359 flow [2021-10-28 09:06:35,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 113.85714285714286) internal successors, (797), 7 states have internal predecessors, (797), 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) [2021-10-28 09:06:35,625 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:06:35,625 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:35,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 09:06:35,626 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:06:35,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:06:35,626 INFO L85 PathProgramCache]: Analyzing trace with hash 155612564, now seen corresponding path program 1 times [2021-10-28 09:06:35,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:06:35,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470112597] [2021-10-28 09:06:35,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:35,628 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:06:35,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:35,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:06:35,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:06:35,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470112597] [2021-10-28 09:06:35,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470112597] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:06:35,817 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:06:35,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:06:35,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014582450] [2021-10-28 09:06:35,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:06:35,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:06:35,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:06:35,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:06:35,827 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 156 [2021-10-28 09:06:35,828 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 137 transitions, 359 flow. Second operand has 7 states, 7 states have (on average 114.42857142857143) internal successors, (801), 7 states have internal predecessors, (801), 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) [2021-10-28 09:06:35,828 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:06:35,829 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 156 [2021-10-28 09:06:35,829 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:06:36,102 INFO L129 PetriNetUnfolder]: 83/526 cut-off events. [2021-10-28 09:06:36,102 INFO L130 PetriNetUnfolder]: For 96/99 co-relation queries the response was YES. [2021-10-28 09:06:36,105 INFO L84 FinitePrefix]: Finished finitePrefix Result has 825 conditions, 526 events. 83/526 cut-off events. For 96/99 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2427 event pairs, 24 based on Foata normal form. 3/494 useless extension candidates. Maximal degree in co-relation 815. Up to 69 conditions per place. [2021-10-28 09:06:36,109 INFO L132 encePairwiseOnDemand]: 146/156 looper letters, 46 selfloop transitions, 10 changer transitions 0/154 dead transitions. [2021-10-28 09:06:36,109 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 154 transitions, 515 flow [2021-10-28 09:06:36,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:06:36,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-28 09:06:36,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 935 transitions. [2021-10-28 09:06:36,114 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.749198717948718 [2021-10-28 09:06:36,114 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 935 transitions. [2021-10-28 09:06:36,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 935 transitions. [2021-10-28 09:06:36,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:06:36,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 935 transitions. [2021-10-28 09:06:36,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 116.875) internal successors, (935), 8 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) [2021-10-28 09:06:36,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 156.0) internal successors, (1404), 9 states have internal predecessors, (1404), 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) [2021-10-28 09:06:36,123 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 156.0) internal successors, (1404), 9 states have internal predecessors, (1404), 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) [2021-10-28 09:06:36,123 INFO L186 Difference]: Start difference. First operand has 153 places, 137 transitions, 359 flow. Second operand 8 states and 935 transitions. [2021-10-28 09:06:36,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 154 transitions, 515 flow [2021-10-28 09:06:36,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 154 transitions, 480 flow, removed 5 selfloop flow, removed 10 redundant places. [2021-10-28 09:06:36,133 INFO L242 Difference]: Finished difference. Result has 148 places, 139 transitions, 364 flow [2021-10-28 09:06:36,134 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=364, PETRI_PLACES=148, PETRI_TRANSITIONS=139} [2021-10-28 09:06:36,134 INFO L334 CegarLoopForPetriNet]: 138 programPoint places, 10 predicate places. [2021-10-28 09:06:36,134 INFO L470 AbstractCegarLoop]: Abstraction has has 148 places, 139 transitions, 364 flow [2021-10-28 09:06:36,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 114.42857142857143) internal successors, (801), 7 states have internal predecessors, (801), 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) [2021-10-28 09:06:36,135 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:06:36,136 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:36,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 09:06:36,136 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:06:36,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:06:36,137 INFO L85 PathProgramCache]: Analyzing trace with hash -806334828, now seen corresponding path program 1 times [2021-10-28 09:06:36,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:06:36,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202997217] [2021-10-28 09:06:36,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:36,139 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:06:36,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:36,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:06:36,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:06:36,320 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202997217] [2021-10-28 09:06:36,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202997217] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:06:36,320 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:06:36,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:06:36,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766477121] [2021-10-28 09:06:36,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:06:36,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:06:36,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:06:36,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:06:36,328 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 156 [2021-10-28 09:06:36,330 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 139 transitions, 364 flow. Second operand has 7 states, 7 states have (on average 114.42857142857143) internal successors, (801), 7 states have internal predecessors, (801), 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) [2021-10-28 09:06:36,330 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:06:36,330 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 156 [2021-10-28 09:06:36,330 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:06:36,569 INFO L129 PetriNetUnfolder]: 66/414 cut-off events. [2021-10-28 09:06:36,569 INFO L130 PetriNetUnfolder]: For 59/64 co-relation queries the response was YES. [2021-10-28 09:06:36,572 INFO L84 FinitePrefix]: Finished finitePrefix Result has 656 conditions, 414 events. 66/414 cut-off events. For 59/64 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1813 event pairs, 21 based on Foata normal form. 0/363 useless extension candidates. Maximal degree in co-relation 646. Up to 63 conditions per place. [2021-10-28 09:06:36,574 INFO L132 encePairwiseOnDemand]: 146/156 looper letters, 42 selfloop transitions, 9 changer transitions 3/152 dead transitions. [2021-10-28 09:06:36,575 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 152 transitions, 502 flow [2021-10-28 09:06:36,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:06:36,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-28 09:06:36,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 933 transitions. [2021-10-28 09:06:36,580 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7475961538461539 [2021-10-28 09:06:36,580 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 933 transitions. [2021-10-28 09:06:36,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 933 transitions. [2021-10-28 09:06:36,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:06:36,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 933 transitions. [2021-10-28 09:06:36,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 116.625) internal successors, (933), 8 states have internal predecessors, (933), 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) [2021-10-28 09:06:36,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 156.0) internal successors, (1404), 9 states have internal predecessors, (1404), 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) [2021-10-28 09:06:36,591 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 156.0) internal successors, (1404), 9 states have internal predecessors, (1404), 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) [2021-10-28 09:06:36,591 INFO L186 Difference]: Start difference. First operand has 148 places, 139 transitions, 364 flow. Second operand 8 states and 933 transitions. [2021-10-28 09:06:36,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 152 transitions, 502 flow [2021-10-28 09:06:36,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 152 transitions, 484 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-10-28 09:06:36,598 INFO L242 Difference]: Finished difference. Result has 151 places, 138 transitions, 360 flow [2021-10-28 09:06:36,599 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=360, PETRI_PLACES=151, PETRI_TRANSITIONS=138} [2021-10-28 09:06:36,599 INFO L334 CegarLoopForPetriNet]: 138 programPoint places, 13 predicate places. [2021-10-28 09:06:36,599 INFO L470 AbstractCegarLoop]: Abstraction has has 151 places, 138 transitions, 360 flow [2021-10-28 09:06:36,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 114.42857142857143) internal successors, (801), 7 states have internal predecessors, (801), 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) [2021-10-28 09:06:36,600 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:06:36,601 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:36,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 09:06:36,601 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:06:36,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:06:36,602 INFO L85 PathProgramCache]: Analyzing trace with hash 216151815, now seen corresponding path program 1 times [2021-10-28 09:06:36,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:06:36,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424017371] [2021-10-28 09:06:36,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:36,603 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:06:36,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:36,970 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:06:36,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:06:36,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424017371] [2021-10-28 09:06:36,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424017371] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:06:36,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90474187] [2021-10-28 09:06:36,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:36,971 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:06:36,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f0a57a-3db4-4675-8128-65a337ae94fb/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:06:36,979 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f0a57a-3db4-4675-8128-65a337ae94fb/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:06:37,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f0a57a-3db4-4675-8128-65a337ae94fb/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 09:06:37,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:37,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 09:06:37,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:06:38,333 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:06:38,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90474187] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:06:38,334 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:06:38,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 22 [2021-10-28 09:06:38,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051970618] [2021-10-28 09:06:38,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-28 09:06:38,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:06:38,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-28 09:06:38,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2021-10-28 09:06:38,344 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 156 [2021-10-28 09:06:38,350 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 138 transitions, 360 flow. Second operand has 22 states, 22 states have (on average 110.95454545454545) internal successors, (2441), 22 states have internal predecessors, (2441), 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) [2021-10-28 09:06:38,350 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:06:38,350 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 156 [2021-10-28 09:06:38,350 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:06:38,892 INFO L129 PetriNetUnfolder]: 56/369 cut-off events. [2021-10-28 09:06:38,893 INFO L130 PetriNetUnfolder]: For 79/83 co-relation queries the response was YES. [2021-10-28 09:06:38,894 INFO L84 FinitePrefix]: Finished finitePrefix Result has 608 conditions, 369 events. 56/369 cut-off events. For 79/83 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1556 event pairs, 16 based on Foata normal form. 5/338 useless extension candidates. Maximal degree in co-relation 597. Up to 63 conditions per place. [2021-10-28 09:06:38,897 INFO L132 encePairwiseOnDemand]: 142/156 looper letters, 41 selfloop transitions, 14 changer transitions 0/151 dead transitions. [2021-10-28 09:06:38,897 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 151 transitions, 502 flow [2021-10-28 09:06:38,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 09:06:38,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-10-28 09:06:38,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1567 transitions. [2021-10-28 09:06:38,904 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7174908424908425 [2021-10-28 09:06:38,905 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1567 transitions. [2021-10-28 09:06:38,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1567 transitions. [2021-10-28 09:06:38,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:06:38,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1567 transitions. [2021-10-28 09:06:38,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 111.92857142857143) internal successors, (1567), 14 states have internal predecessors, (1567), 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) [2021-10-28 09:06:38,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 156.0) internal successors, (2340), 15 states have internal predecessors, (2340), 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) [2021-10-28 09:06:38,920 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 156.0) internal successors, (2340), 15 states have internal predecessors, (2340), 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) [2021-10-28 09:06:38,920 INFO L186 Difference]: Start difference. First operand has 151 places, 138 transitions, 360 flow. Second operand 14 states and 1567 transitions. [2021-10-28 09:06:38,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 151 transitions, 502 flow [2021-10-28 09:06:38,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 151 transitions, 474 flow, removed 4 selfloop flow, removed 8 redundant places. [2021-10-28 09:06:38,927 INFO L242 Difference]: Finished difference. Result has 157 places, 140 transitions, 381 flow [2021-10-28 09:06:38,928 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=381, PETRI_PLACES=157, PETRI_TRANSITIONS=140} [2021-10-28 09:06:38,928 INFO L334 CegarLoopForPetriNet]: 138 programPoint places, 19 predicate places. [2021-10-28 09:06:38,928 INFO L470 AbstractCegarLoop]: Abstraction has has 157 places, 140 transitions, 381 flow [2021-10-28 09:06:38,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 110.95454545454545) internal successors, (2441), 22 states have internal predecessors, (2441), 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) [2021-10-28 09:06:38,930 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:06:38,930 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:38,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f0a57a-3db4-4675-8128-65a337ae94fb/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:06:39,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f0a57a-3db4-4675-8128-65a337ae94fb/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:06:39,155 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:06:39,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:06:39,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1730533241, now seen corresponding path program 1 times [2021-10-28 09:06:39,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:06:39,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67203465] [2021-10-28 09:06:39,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:39,156 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:06:39,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:39,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:06:39,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:06:39,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67203465] [2021-10-28 09:06:39,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67203465] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:06:39,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555557237] [2021-10-28 09:06:39,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:39,427 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:06:39,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f0a57a-3db4-4675-8128-65a337ae94fb/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:06:39,428 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f0a57a-3db4-4675-8128-65a337ae94fb/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:06:39,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f0a57a-3db4-4675-8128-65a337ae94fb/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 09:06:39,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:39,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 09:06:39,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:06:40,619 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:06:40,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555557237] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:06:40,620 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:06:40,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 22 [2021-10-28 09:06:40,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090652280] [2021-10-28 09:06:40,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-28 09:06:40,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:06:40,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-28 09:06:40,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2021-10-28 09:06:40,629 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 156 [2021-10-28 09:06:40,633 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 140 transitions, 381 flow. Second operand has 22 states, 22 states have (on average 110.86363636363636) internal successors, (2439), 22 states have internal predecessors, (2439), 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) [2021-10-28 09:06:40,633 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:06:40,633 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 156 [2021-10-28 09:06:40,633 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:06:41,087 INFO L129 PetriNetUnfolder]: 47/351 cut-off events. [2021-10-28 09:06:41,087 INFO L130 PetriNetUnfolder]: For 74/77 co-relation queries the response was YES. [2021-10-28 09:06:41,089 INFO L84 FinitePrefix]: Finished finitePrefix Result has 570 conditions, 351 events. 47/351 cut-off events. For 74/77 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1256 event pairs, 12 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 558. Up to 56 conditions per place. [2021-10-28 09:06:41,092 INFO L132 encePairwiseOnDemand]: 142/156 looper letters, 41 selfloop transitions, 14 changer transitions 0/151 dead transitions. [2021-10-28 09:06:41,092 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 151 transitions, 517 flow [2021-10-28 09:06:41,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 09:06:41,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-10-28 09:06:41,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1567 transitions. [2021-10-28 09:06:41,099 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7174908424908425 [2021-10-28 09:06:41,099 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1567 transitions. [2021-10-28 09:06:41,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1567 transitions. [2021-10-28 09:06:41,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:06:41,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1567 transitions. [2021-10-28 09:06:41,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 111.92857142857143) internal successors, (1567), 14 states have internal predecessors, (1567), 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) [2021-10-28 09:06:41,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 156.0) internal successors, (2340), 15 states have internal predecessors, (2340), 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) [2021-10-28 09:06:41,116 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 156.0) internal successors, (2340), 15 states have internal predecessors, (2340), 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) [2021-10-28 09:06:41,116 INFO L186 Difference]: Start difference. First operand has 157 places, 140 transitions, 381 flow. Second operand 14 states and 1567 transitions. [2021-10-28 09:06:41,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 151 transitions, 517 flow [2021-10-28 09:06:41,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 151 transitions, 491 flow, removed 0 selfloop flow, removed 11 redundant places. [2021-10-28 09:06:41,123 INFO L242 Difference]: Finished difference. Result has 160 places, 140 transitions, 388 flow [2021-10-28 09:06:41,124 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=388, PETRI_PLACES=160, PETRI_TRANSITIONS=140} [2021-10-28 09:06:41,124 INFO L334 CegarLoopForPetriNet]: 138 programPoint places, 22 predicate places. [2021-10-28 09:06:41,124 INFO L470 AbstractCegarLoop]: Abstraction has has 160 places, 140 transitions, 388 flow [2021-10-28 09:06:41,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 110.86363636363636) internal successors, (2439), 22 states have internal predecessors, (2439), 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) [2021-10-28 09:06:41,127 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:06:41,127 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:41,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f0a57a-3db4-4675-8128-65a337ae94fb/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:06:41,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f0a57a-3db4-4675-8128-65a337ae94fb/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:06:41,355 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:06:41,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:06:41,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1892902254, now seen corresponding path program 1 times [2021-10-28 09:06:41,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:06:41,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644772346] [2021-10-28 09:06:41,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:41,356 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:06:41,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:41,602 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-28 09:06:41,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:06:41,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644772346] [2021-10-28 09:06:41,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644772346] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:06:41,602 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:06:41,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-28 09:06:41,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255579553] [2021-10-28 09:06:41,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:06:41,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:06:41,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:06:41,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:06:41,607 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 156 [2021-10-28 09:06:41,609 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 140 transitions, 388 flow. Second operand has 9 states, 9 states have (on average 102.44444444444444) internal successors, (922), 9 states have internal predecessors, (922), 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) [2021-10-28 09:06:41,609 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:06:41,609 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 156 [2021-10-28 09:06:41,609 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:06:41,904 INFO L129 PetriNetUnfolder]: 4/138 cut-off events. [2021-10-28 09:06:41,905 INFO L130 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2021-10-28 09:06:41,905 INFO L84 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 138 events. 4/138 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 97 event pairs, 0 based on Foata normal form. 3/139 useless extension candidates. Maximal degree in co-relation 214. Up to 8 conditions per place. [2021-10-28 09:06:41,905 INFO L132 encePairwiseOnDemand]: 142/156 looper letters, 0 selfloop transitions, 0 changer transitions 115/115 dead transitions. [2021-10-28 09:06:41,906 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 115 transitions, 380 flow [2021-10-28 09:06:41,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 09:06:41,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-28 09:06:41,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1308 transitions. [2021-10-28 09:06:41,911 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6449704142011834 [2021-10-28 09:06:41,911 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1308 transitions. [2021-10-28 09:06:41,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1308 transitions. [2021-10-28 09:06:41,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:06:41,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1308 transitions. [2021-10-28 09:06:41,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 100.61538461538461) internal successors, (1308), 13 states have internal predecessors, (1308), 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) [2021-10-28 09:06:41,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 156.0) internal successors, (2184), 14 states have internal predecessors, (2184), 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) [2021-10-28 09:06:41,924 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 156.0) internal successors, (2184), 14 states have internal predecessors, (2184), 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) [2021-10-28 09:06:41,924 INFO L186 Difference]: Start difference. First operand has 160 places, 140 transitions, 388 flow. Second operand 13 states and 1308 transitions. [2021-10-28 09:06:41,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 115 transitions, 380 flow [2021-10-28 09:06:41,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 115 transitions, 342 flow, removed 0 selfloop flow, removed 18 redundant places. [2021-10-28 09:06:41,928 INFO L242 Difference]: Finished difference. Result has 134 places, 0 transitions, 0 flow [2021-10-28 09:06:41,928 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=0, PETRI_PLACES=134, PETRI_TRANSITIONS=0} [2021-10-28 09:06:41,929 INFO L334 CegarLoopForPetriNet]: 138 programPoint places, -4 predicate places. [2021-10-28 09:06:41,929 INFO L470 AbstractCegarLoop]: Abstraction has has 134 places, 0 transitions, 0 flow [2021-10-28 09:06:41,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 102.44444444444444) internal successors, (922), 9 states have internal predecessors, (922), 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) [2021-10-28 09:06:41,933 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:06:41,933 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-28 09:06:41,933 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-28 09:06:41,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 09:06:41,938 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:41,941 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-28 09:06:41,942 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:06:41,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:06:41 BasicIcfg [2021-10-28 09:06:41,949 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:06:41,949 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:06:41,949 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:06:41,950 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:06:41,950 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:06:32" (3/4) ... [2021-10-28 09:06:41,954 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 09:06:41,973 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-28 09:06:41,973 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-28 09:06:41,986 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-10-28 09:06:41,990 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 09:06:41,991 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:06:41,991 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:06:42,059 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f0a57a-3db4-4675-8128-65a337ae94fb/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:06:42,059 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:06:42,061 INFO L168 Benchmark]: Toolchain (without parser) took 10388.41 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 86.8 MB in the beginning and 82.5 MB in the end (delta: 4.3 MB). Peak memory consumption was 29.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:06:42,062 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 81.8 MB. Free memory was 39.2 MB in the beginning and 39.1 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:06:42,063 INFO L168 Benchmark]: CACSL2BoogieTranslator took 298.28 ms. Allocated memory is still 117.4 MB. Free memory was 86.8 MB in the beginning and 93.1 MB in the end (delta: -6.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:06:42,064 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.57 ms. Allocated memory is still 117.4 MB. Free memory was 93.1 MB in the beginning and 91.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:06:42,064 INFO L168 Benchmark]: Boogie Preprocessor took 37.03 ms. Allocated memory is still 117.4 MB. Free memory was 91.5 MB in the beginning and 90.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:06:42,064 INFO L168 Benchmark]: RCFGBuilder took 614.55 ms. Allocated memory is still 117.4 MB. Free memory was 90.1 MB in the beginning and 75.5 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-28 09:06:42,066 INFO L168 Benchmark]: TraceAbstraction took 9279.28 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 75.1 MB in the beginning and 85.6 MB in the end (delta: -10.5 MB). Peak memory consumption was 17.8 MB. Max. memory is 16.1 GB. [2021-10-28 09:06:42,067 INFO L168 Benchmark]: Witness Printer took 110.18 ms. Allocated memory is still 142.6 MB. Free memory was 85.6 MB in the beginning and 82.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:06:42,070 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 81.8 MB. Free memory was 39.2 MB in the beginning and 39.1 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 298.28 ms. Allocated memory is still 117.4 MB. Free memory was 86.8 MB in the beginning and 93.1 MB in the end (delta: -6.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.57 ms. Allocated memory is still 117.4 MB. Free memory was 93.1 MB in the beginning and 91.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.03 ms. Allocated memory is still 117.4 MB. Free memory was 91.5 MB in the beginning and 90.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 614.55 ms. Allocated memory is still 117.4 MB. Free memory was 90.1 MB in the beginning and 75.5 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9279.28 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 75.1 MB in the beginning and 85.6 MB in the end (delta: -10.5 MB). Peak memory consumption was 17.8 MB. Max. memory is 16.1 GB. * Witness Printer took 110.18 ms. Allocated memory is still 142.6 MB. Free memory was 85.6 MB in the beginning and 82.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 85]: 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 5 procedures, 172 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 9.1s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 152 SDtfs, 717 SDslu, 266 SDs, 0 SdLazy, 1299 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 352 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=388occurred in iteration=8, InterpolantAutomatonStates: 85, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 1204 NumberOfCodeBlocks, 1204 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1193 ConstructedInterpolants, 0 QuantifiedInterpolants, 5587 SizeOfPredicates, 18 NumberOfNonLiveVariables, 520 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 11 InterpolantComputations, 7 PerfectInterpolantSequences, 13/21 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! [2021-10-28 09:06:42,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30f0a57a-3db4-4675-8128-65a337ae94fb/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...