./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe004_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f90ddf13-daeb-4acc-811a-6ce42a18a5ee/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f90ddf13-daeb-4acc-811a-6ce42a18a5ee/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f90ddf13-daeb-4acc-811a-6ce42a18a5ee/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f90ddf13-daeb-4acc-811a-6ce42a18a5ee/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe004_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f90ddf13-daeb-4acc-811a-6ce42a18a5ee/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f90ddf13-daeb-4acc-811a-6ce42a18a5ee/bin/uautomizer-Dbtcem3rbc --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 28abced7878c2be916ea5a54f12b603c21b6525f16f4a0aadbf776b589e0bc49 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:53:47,081 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:53:47,083 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:53:47,124 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:53:47,125 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:53:47,128 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:53:47,131 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:53:47,136 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:53:47,138 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:53:47,144 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:53:47,145 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:53:47,147 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:53:47,148 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:53:47,151 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:53:47,153 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:53:47,156 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:53:47,158 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:53:47,159 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:53:47,160 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:53:47,167 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:53:47,169 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:53:47,170 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:53:47,174 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:53:47,175 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:53:47,181 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:53:47,186 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:53:47,186 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:53:47,187 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:53:47,189 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:53:47,190 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:53:47,191 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:53:47,192 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:53:47,193 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:53:47,195 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:53:47,197 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:53:47,197 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:53:47,198 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:53:47,198 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:53:47,199 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:53:47,200 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:53:47,200 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:53:47,201 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f90ddf13-daeb-4acc-811a-6ce42a18a5ee/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:53:47,231 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:53:47,232 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:53:47,232 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:53:47,232 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:53:47,233 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:53:47,233 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:53:47,234 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:53:47,234 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:53:47,234 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:53:47,234 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:53:47,235 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:53:47,235 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:53:47,235 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:53:47,235 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:53:47,235 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:53:47,235 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:53:47,236 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:53:47,236 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:53:47,236 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:53:47,236 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:53:47,236 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:53:47,236 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:53:47,237 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:53:47,237 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:53:47,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:53:47,245 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:53:47,245 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:53:47,245 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:53:47,246 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:53:47,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:53:47,246 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:53:47,247 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:53:47,247 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:53:47,247 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_f90ddf13-daeb-4acc-811a-6ce42a18a5ee/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f90ddf13-daeb-4acc-811a-6ce42a18a5ee/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 28abced7878c2be916ea5a54f12b603c21b6525f16f4a0aadbf776b589e0bc49 [2022-11-02 20:53:47,548 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:53:47,575 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:53:47,577 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:53:47,579 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:53:47,580 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:53:47,581 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f90ddf13-daeb-4acc-811a-6ce42a18a5ee/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread-wmm/safe004_tso.i [2022-11-02 20:53:47,651 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f90ddf13-daeb-4acc-811a-6ce42a18a5ee/bin/uautomizer-Dbtcem3rbc/data/0178588c8/4dfc52db624d407696de118b49ef155d/FLAG77c0047e3 [2022-11-02 20:53:48,177 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:53:48,178 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f90ddf13-daeb-4acc-811a-6ce42a18a5ee/sv-benchmarks/c/pthread-wmm/safe004_tso.i [2022-11-02 20:53:48,193 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f90ddf13-daeb-4acc-811a-6ce42a18a5ee/bin/uautomizer-Dbtcem3rbc/data/0178588c8/4dfc52db624d407696de118b49ef155d/FLAG77c0047e3 [2022-11-02 20:53:48,483 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f90ddf13-daeb-4acc-811a-6ce42a18a5ee/bin/uautomizer-Dbtcem3rbc/data/0178588c8/4dfc52db624d407696de118b49ef155d [2022-11-02 20:53:48,486 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:53:48,489 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:53:48,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:53:48,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:53:48,496 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:53:48,497 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:53:48" (1/1) ... [2022-11-02 20:53:48,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@136e1e3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:48, skipping insertion in model container [2022-11-02 20:53:48,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:53:48" (1/1) ... [2022-11-02 20:53:48,507 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:53:48,555 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:53:48,742 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f90ddf13-daeb-4acc-811a-6ce42a18a5ee/sv-benchmarks/c/pthread-wmm/safe004_tso.i[945,958] [2022-11-02 20:53:48,904 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:53:48,912 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:53:48,927 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f90ddf13-daeb-4acc-811a-6ce42a18a5ee/sv-benchmarks/c/pthread-wmm/safe004_tso.i[945,958] [2022-11-02 20:53:48,965 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:53:49,003 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:53:49,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:49 WrapperNode [2022-11-02 20:53:49,004 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:53:49,005 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:53:49,005 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:53:49,005 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:53:49,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:49" (1/1) ... [2022-11-02 20:53:49,050 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:49" (1/1) ... [2022-11-02 20:53:49,082 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2022-11-02 20:53:49,083 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:53:49,084 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:53:49,084 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:53:49,085 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:53:49,093 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:49" (1/1) ... [2022-11-02 20:53:49,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:49" (1/1) ... [2022-11-02 20:53:49,106 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:49" (1/1) ... [2022-11-02 20:53:49,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:49" (1/1) ... [2022-11-02 20:53:49,117 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:49" (1/1) ... [2022-11-02 20:53:49,118 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:49" (1/1) ... [2022-11-02 20:53:49,120 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:49" (1/1) ... [2022-11-02 20:53:49,121 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:49" (1/1) ... [2022-11-02 20:53:49,123 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:53:49,124 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:53:49,124 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:53:49,124 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:53:49,135 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:49" (1/1) ... [2022-11-02 20:53:49,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:53:49,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f90ddf13-daeb-4acc-811a-6ce42a18a5ee/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:53:49,165 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f90ddf13-daeb-4acc-811a-6ce42a18a5ee/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:53:49,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f90ddf13-daeb-4acc-811a-6ce42a18a5ee/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:53:49,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:53:49,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-02 20:53:49,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:53:49,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:53:49,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:53:49,212 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-02 20:53:49,212 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-02 20:53:49,213 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-02 20:53:49,213 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-02 20:53:49,213 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-02 20:53:49,214 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-02 20:53:49,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:53:49,214 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-02 20:53:49,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:53:49,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:53:49,216 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:53:49,416 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:53:49,418 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:53:49,610 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:53:49,617 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:53:49,617 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 20:53:49,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:53:49 BoogieIcfgContainer [2022-11-02 20:53:49,620 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:53:49,622 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:53:49,622 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:53:49,632 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:53:49,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:53:48" (1/3) ... [2022-11-02 20:53:49,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@766048c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:53:49, skipping insertion in model container [2022-11-02 20:53:49,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:49" (2/3) ... [2022-11-02 20:53:49,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@766048c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:53:49, skipping insertion in model container [2022-11-02 20:53:49,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:53:49" (3/3) ... [2022-11-02 20:53:49,636 INFO L112 eAbstractionObserver]: Analyzing ICFG safe004_tso.i [2022-11-02 20:53:49,648 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:53:49,659 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:53:49,660 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:53:49,660 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:53:49,758 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:53:49,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 91 transitions, 197 flow [2022-11-02 20:53:49,914 INFO L130 PetriNetUnfolder]: 2/88 cut-off events. [2022-11-02 20:53:49,918 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:53:49,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 88 events. 2/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-11-02 20:53:49,926 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 91 transitions, 197 flow [2022-11-02 20:53:49,930 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 74 transitions, 157 flow [2022-11-02 20:53:49,948 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:53:49,960 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@35e3d75, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:53:49,960 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-02 20:53:50,003 INFO L130 PetriNetUnfolder]: 1/73 cut-off events. [2022-11-02 20:53:50,003 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:53:50,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:53:50,004 INFO L208 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] [2022-11-02 20:53:50,006 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:53:50,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:50,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1258848663, now seen corresponding path program 1 times [2022-11-02 20:53:50,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:50,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88633509] [2022-11-02 20:53:50,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:50,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:50,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:50,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:53:50,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:53:50,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88633509] [2022-11-02 20:53:50,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88633509] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:53:50,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:53:50,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:53:50,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814863239] [2022-11-02 20:53:50,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:53:51,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:53:51,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:53:51,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:53:51,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:53:51,066 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 91 [2022-11-02 20:53:51,070 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 74 transitions, 157 flow. Second operand has 6 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:51,070 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:53:51,070 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 91 [2022-11-02 20:53:51,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:53:51,278 INFO L130 PetriNetUnfolder]: 3/89 cut-off events. [2022-11-02 20:53:51,278 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-02 20:53:51,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 89 events. 3/89 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 91 event pairs, 0 based on Foata normal form. 4/92 useless extension candidates. Maximal degree in co-relation 88. Up to 7 conditions per place. [2022-11-02 20:53:51,280 INFO L137 encePairwiseOnDemand]: 84/91 looper letters, 9 selfloop transitions, 2 changer transitions 11/83 dead transitions. [2022-11-02 20:53:51,281 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 83 transitions, 217 flow [2022-11-02 20:53:51,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:53:51,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:53:51,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 709 transitions. [2022-11-02 20:53:51,298 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8656898656898657 [2022-11-02 20:53:51,298 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 709 transitions. [2022-11-02 20:53:51,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 709 transitions. [2022-11-02 20:53:51,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:53:51,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 709 transitions. [2022-11-02 20:53:51,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 78.77777777777777) internal successors, (709), 9 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:51,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:51,318 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:51,320 INFO L175 Difference]: Start difference. First operand has 83 places, 74 transitions, 157 flow. Second operand 9 states and 709 transitions. [2022-11-02 20:53:51,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 83 transitions, 217 flow [2022-11-02 20:53:51,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 83 transitions, 214 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-02 20:53:51,327 INFO L231 Difference]: Finished difference. Result has 95 places, 72 transitions, 170 flow [2022-11-02 20:53:51,329 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=170, PETRI_PLACES=95, PETRI_TRANSITIONS=72} [2022-11-02 20:53:51,333 INFO L287 CegarLoopForPetriNet]: 83 programPoint places, 12 predicate places. [2022-11-02 20:53:51,333 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 72 transitions, 170 flow [2022-11-02 20:53:51,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:51,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:53:51,334 INFO L208 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] [2022-11-02 20:53:51,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:53:51,335 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:53:51,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:51,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1824939960, now seen corresponding path program 1 times [2022-11-02 20:53:51,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:51,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200094636] [2022-11-02 20:53:51,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:51,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:51,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:51,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:53:51,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:53:51,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200094636] [2022-11-02 20:53:51,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200094636] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:53:51,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:53:51,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:53:51,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049625294] [2022-11-02 20:53:51,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:53:51,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:53:51,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:53:51,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:53:51,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:53:51,701 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2022-11-02 20:53:51,702 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 72 transitions, 170 flow. Second operand has 7 states, 7 states have (on average 70.0) internal successors, (490), 7 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:51,702 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:53:51,702 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2022-11-02 20:53:51,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:53:52,101 INFO L130 PetriNetUnfolder]: 382/821 cut-off events. [2022-11-02 20:53:52,101 INFO L131 PetriNetUnfolder]: For 260/345 co-relation queries the response was YES. [2022-11-02 20:53:52,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1754 conditions, 821 events. 382/821 cut-off events. For 260/345 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4004 event pairs, 13 based on Foata normal form. 26/812 useless extension candidates. Maximal degree in co-relation 1711. Up to 234 conditions per place. [2022-11-02 20:53:52,116 INFO L137 encePairwiseOnDemand]: 79/91 looper letters, 27 selfloop transitions, 10 changer transitions 50/140 dead transitions. [2022-11-02 20:53:52,116 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 140 transitions, 534 flow [2022-11-02 20:53:52,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:53:52,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-02 20:53:52,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 974 transitions. [2022-11-02 20:53:52,120 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8233305156382079 [2022-11-02 20:53:52,120 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 974 transitions. [2022-11-02 20:53:52,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 974 transitions. [2022-11-02 20:53:52,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:53:52,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 974 transitions. [2022-11-02 20:53:52,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.92307692307692) internal successors, (974), 13 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:52,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:52,129 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:52,129 INFO L175 Difference]: Start difference. First operand has 95 places, 72 transitions, 170 flow. Second operand 13 states and 974 transitions. [2022-11-02 20:53:52,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 140 transitions, 534 flow [2022-11-02 20:53:52,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 140 transitions, 478 flow, removed 24 selfloop flow, removed 8 redundant places. [2022-11-02 20:53:52,146 INFO L231 Difference]: Finished difference. Result has 104 places, 79 transitions, 259 flow [2022-11-02 20:53:52,146 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=259, PETRI_PLACES=104, PETRI_TRANSITIONS=79} [2022-11-02 20:53:52,147 INFO L287 CegarLoopForPetriNet]: 83 programPoint places, 21 predicate places. [2022-11-02 20:53:52,147 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 79 transitions, 259 flow [2022-11-02 20:53:52,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.0) internal successors, (490), 7 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:52,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:53:52,149 INFO L208 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] [2022-11-02 20:53:52,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:53:52,149 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:53:52,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:52,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1926818389, now seen corresponding path program 1 times [2022-11-02 20:53:52,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:52,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993834447] [2022-11-02 20:53:52,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:52,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:52,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:52,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:53:52,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:53:52,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993834447] [2022-11-02 20:53:52,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993834447] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:53:52,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:53:52,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:53:52,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442452341] [2022-11-02 20:53:52,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:53:52,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:53:52,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:53:52,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:53:52,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:53:52,420 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2022-11-02 20:53:52,422 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 79 transitions, 259 flow. Second operand has 8 states, 8 states have (on average 69.875) internal successors, (559), 8 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:52,423 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:53:52,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2022-11-02 20:53:52,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:53:52,709 INFO L130 PetriNetUnfolder]: 267/771 cut-off events. [2022-11-02 20:53:52,710 INFO L131 PetriNetUnfolder]: For 1556/2685 co-relation queries the response was YES. [2022-11-02 20:53:52,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2417 conditions, 771 events. 267/771 cut-off events. For 1556/2685 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 4385 event pairs, 13 based on Foata normal form. 20/766 useless extension candidates. Maximal degree in co-relation 2366. Up to 247 conditions per place. [2022-11-02 20:53:52,717 INFO L137 encePairwiseOnDemand]: 79/91 looper letters, 22 selfloop transitions, 11 changer transitions 38/124 dead transitions. [2022-11-02 20:53:52,718 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 124 transitions, 714 flow [2022-11-02 20:53:52,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:53:52,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-02 20:53:52,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 599 transitions. [2022-11-02 20:53:52,720 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8228021978021978 [2022-11-02 20:53:52,720 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 599 transitions. [2022-11-02 20:53:52,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 599 transitions. [2022-11-02 20:53:52,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:53:52,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 599 transitions. [2022-11-02 20:53:52,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 74.875) internal successors, (599), 8 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:52,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 91.0) internal successors, (819), 9 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:52,725 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 91.0) internal successors, (819), 9 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:52,725 INFO L175 Difference]: Start difference. First operand has 104 places, 79 transitions, 259 flow. Second operand 8 states and 599 transitions. [2022-11-02 20:53:52,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 124 transitions, 714 flow [2022-11-02 20:53:52,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 124 transitions, 688 flow, removed 13 selfloop flow, removed 3 redundant places. [2022-11-02 20:53:52,732 INFO L231 Difference]: Finished difference. Result has 104 places, 80 transitions, 301 flow [2022-11-02 20:53:52,733 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=301, PETRI_PLACES=104, PETRI_TRANSITIONS=80} [2022-11-02 20:53:52,734 INFO L287 CegarLoopForPetriNet]: 83 programPoint places, 21 predicate places. [2022-11-02 20:53:52,734 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 80 transitions, 301 flow [2022-11-02 20:53:52,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 69.875) internal successors, (559), 8 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:52,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:53:52,735 INFO L208 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] [2022-11-02 20:53:52,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:53:52,736 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:53:52,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:52,736 INFO L85 PathProgramCache]: Analyzing trace with hash -819910710, now seen corresponding path program 1 times [2022-11-02 20:53:52,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:52,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375554717] [2022-11-02 20:53:52,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:52,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:52,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:52,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:53:52,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:53:52,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375554717] [2022-11-02 20:53:52,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375554717] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:53:52,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:53:52,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:53:52,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509615893] [2022-11-02 20:53:52,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:53:52,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:53:52,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:53:52,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:53:52,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:53:52,972 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2022-11-02 20:53:52,972 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 80 transitions, 301 flow. Second operand has 7 states, 7 states have (on average 70.28571428571429) internal successors, (492), 7 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:52,973 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:53:52,973 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2022-11-02 20:53:52,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:53:53,217 INFO L130 PetriNetUnfolder]: 115/364 cut-off events. [2022-11-02 20:53:53,218 INFO L131 PetriNetUnfolder]: For 927/1259 co-relation queries the response was YES. [2022-11-02 20:53:53,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1299 conditions, 364 events. 115/364 cut-off events. For 927/1259 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1503 event pairs, 12 based on Foata normal form. 11/358 useless extension candidates. Maximal degree in co-relation 1242. Up to 113 conditions per place. [2022-11-02 20:53:53,221 INFO L137 encePairwiseOnDemand]: 80/91 looper letters, 24 selfloop transitions, 7 changer transitions 37/121 dead transitions. [2022-11-02 20:53:53,222 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 121 transitions, 754 flow [2022-11-02 20:53:53,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:53:53,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-02 20:53:53,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 733 transitions. [2022-11-02 20:53:53,224 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8054945054945055 [2022-11-02 20:53:53,225 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 733 transitions. [2022-11-02 20:53:53,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 733 transitions. [2022-11-02 20:53:53,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:53:53,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 733 transitions. [2022-11-02 20:53:53,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 73.3) internal successors, (733), 10 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:53,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:53,234 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:53,234 INFO L175 Difference]: Start difference. First operand has 104 places, 80 transitions, 301 flow. Second operand 10 states and 733 transitions. [2022-11-02 20:53:53,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 121 transitions, 754 flow [2022-11-02 20:53:53,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 121 transitions, 690 flow, removed 26 selfloop flow, removed 9 redundant places. [2022-11-02 20:53:53,243 INFO L231 Difference]: Finished difference. Result has 108 places, 79 transitions, 290 flow [2022-11-02 20:53:53,243 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=290, PETRI_PLACES=108, PETRI_TRANSITIONS=79} [2022-11-02 20:53:53,244 INFO L287 CegarLoopForPetriNet]: 83 programPoint places, 25 predicate places. [2022-11-02 20:53:53,251 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 79 transitions, 290 flow [2022-11-02 20:53:53,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.28571428571429) internal successors, (492), 7 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:53,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:53:53,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:53:53,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:53:53,253 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:53:53,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:53,254 INFO L85 PathProgramCache]: Analyzing trace with hash -2127193616, now seen corresponding path program 1 times [2022-11-02 20:53:53,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:53,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947223661] [2022-11-02 20:53:53,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:53,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:53,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:53,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:53:53,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:53:53,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947223661] [2022-11-02 20:53:53,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947223661] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:53:53,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:53:53,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:53:53,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137138675] [2022-11-02 20:53:53,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:53:53,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:53:53,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:53:53,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:53:53,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:53:53,549 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2022-11-02 20:53:53,550 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 79 transitions, 290 flow. Second operand has 8 states, 8 states have (on average 70.125) internal successors, (561), 8 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:53,550 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:53:53,550 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2022-11-02 20:53:53,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:53:53,813 INFO L130 PetriNetUnfolder]: 43/288 cut-off events. [2022-11-02 20:53:53,813 INFO L131 PetriNetUnfolder]: For 474/524 co-relation queries the response was YES. [2022-11-02 20:53:53,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 777 conditions, 288 events. 43/288 cut-off events. For 474/524 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1248 event pairs, 1 based on Foata normal form. 15/300 useless extension candidates. Maximal degree in co-relation 741. Up to 51 conditions per place. [2022-11-02 20:53:53,815 INFO L137 encePairwiseOnDemand]: 80/91 looper letters, 19 selfloop transitions, 5 changer transitions 39/116 dead transitions. [2022-11-02 20:53:53,815 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 116 transitions, 689 flow [2022-11-02 20:53:53,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:53:53,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-02 20:53:53,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 942 transitions. [2022-11-02 20:53:53,818 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7962806424344886 [2022-11-02 20:53:53,819 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 942 transitions. [2022-11-02 20:53:53,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 942 transitions. [2022-11-02 20:53:53,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:53:53,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 942 transitions. [2022-11-02 20:53:53,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 72.46153846153847) internal successors, (942), 13 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:53,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:53,824 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:53,825 INFO L175 Difference]: Start difference. First operand has 108 places, 79 transitions, 290 flow. Second operand 13 states and 942 transitions. [2022-11-02 20:53:53,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 116 transitions, 689 flow [2022-11-02 20:53:53,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 116 transitions, 634 flow, removed 20 selfloop flow, removed 8 redundant places. [2022-11-02 20:53:53,829 INFO L231 Difference]: Finished difference. Result has 114 places, 72 transitions, 241 flow [2022-11-02 20:53:53,830 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=241, PETRI_PLACES=114, PETRI_TRANSITIONS=72} [2022-11-02 20:53:53,830 INFO L287 CegarLoopForPetriNet]: 83 programPoint places, 31 predicate places. [2022-11-02 20:53:53,831 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 72 transitions, 241 flow [2022-11-02 20:53:53,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 70.125) internal successors, (561), 8 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:53,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:53:53,831 INFO L208 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] [2022-11-02 20:53:53,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:53:53,832 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:53:53,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:53,832 INFO L85 PathProgramCache]: Analyzing trace with hash -228516212, now seen corresponding path program 1 times [2022-11-02 20:53:53,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:53,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241999074] [2022-11-02 20:53:53,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:53,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:53,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:54,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:53:54,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:53:54,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241999074] [2022-11-02 20:53:54,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241999074] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:53:54,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:53:54,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:53:54,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131113733] [2022-11-02 20:53:54,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:53:54,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:53:54,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:53:54,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:53:54,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:53:54,057 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2022-11-02 20:53:54,058 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 72 transitions, 241 flow. Second operand has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:54,058 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:53:54,058 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2022-11-02 20:53:54,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:53:54,205 INFO L130 PetriNetUnfolder]: 94/315 cut-off events. [2022-11-02 20:53:54,205 INFO L131 PetriNetUnfolder]: For 121/121 co-relation queries the response was YES. [2022-11-02 20:53:54,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 629 conditions, 315 events. 94/315 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1470 event pairs, 2 based on Foata normal form. 8/317 useless extension candidates. Maximal degree in co-relation 595. Up to 86 conditions per place. [2022-11-02 20:53:54,208 INFO L137 encePairwiseOnDemand]: 82/91 looper letters, 13 selfloop transitions, 5 changer transitions 21/98 dead transitions. [2022-11-02 20:53:54,208 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 98 transitions, 373 flow [2022-11-02 20:53:54,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:53:54,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:53:54,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 707 transitions. [2022-11-02 20:53:54,210 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8632478632478633 [2022-11-02 20:53:54,210 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 707 transitions. [2022-11-02 20:53:54,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 707 transitions. [2022-11-02 20:53:54,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:53:54,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 707 transitions. [2022-11-02 20:53:54,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 78.55555555555556) internal successors, (707), 9 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:54,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:54,215 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:54,215 INFO L175 Difference]: Start difference. First operand has 114 places, 72 transitions, 241 flow. Second operand 9 states and 707 transitions. [2022-11-02 20:53:54,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 98 transitions, 373 flow [2022-11-02 20:53:54,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 98 transitions, 314 flow, removed 17 selfloop flow, removed 19 redundant places. [2022-11-02 20:53:54,219 INFO L231 Difference]: Finished difference. Result has 101 places, 74 transitions, 232 flow [2022-11-02 20:53:54,219 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=232, PETRI_PLACES=101, PETRI_TRANSITIONS=74} [2022-11-02 20:53:54,220 INFO L287 CegarLoopForPetriNet]: 83 programPoint places, 18 predicate places. [2022-11-02 20:53:54,220 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 74 transitions, 232 flow [2022-11-02 20:53:54,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:54,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:53:54,221 INFO L208 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] [2022-11-02 20:53:54,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:53:54,221 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:53:54,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:54,222 INFO L85 PathProgramCache]: Analyzing trace with hash 103065487, now seen corresponding path program 1 times [2022-11-02 20:53:54,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:54,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56431964] [2022-11-02 20:53:54,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:54,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:54,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:54,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:53:54,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:53:54,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56431964] [2022-11-02 20:53:54,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56431964] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:53:54,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:53:54,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:53:54,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074248563] [2022-11-02 20:53:54,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:53:54,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:53:54,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:53:54,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:53:54,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:53:54,439 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2022-11-02 20:53:54,440 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 74 transitions, 232 flow. Second operand has 7 states, 7 states have (on average 75.57142857142857) internal successors, (529), 7 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:54,440 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:53:54,440 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2022-11-02 20:53:54,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:53:54,610 INFO L130 PetriNetUnfolder]: 43/199 cut-off events. [2022-11-02 20:53:54,611 INFO L131 PetriNetUnfolder]: For 260/277 co-relation queries the response was YES. [2022-11-02 20:53:54,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 568 conditions, 199 events. 43/199 cut-off events. For 260/277 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 693 event pairs, 0 based on Foata normal form. 7/205 useless extension candidates. Maximal degree in co-relation 521. Up to 65 conditions per place. [2022-11-02 20:53:54,612 INFO L137 encePairwiseOnDemand]: 82/91 looper letters, 9 selfloop transitions, 7 changer transitions 25/100 dead transitions. [2022-11-02 20:53:54,612 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 100 transitions, 495 flow [2022-11-02 20:53:54,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:53:54,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-02 20:53:54,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 783 transitions. [2022-11-02 20:53:54,615 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8604395604395605 [2022-11-02 20:53:54,616 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 783 transitions. [2022-11-02 20:53:54,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 783 transitions. [2022-11-02 20:53:54,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:53:54,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 783 transitions. [2022-11-02 20:53:54,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 78.3) internal successors, (783), 10 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:54,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:54,621 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:54,621 INFO L175 Difference]: Start difference. First operand has 101 places, 74 transitions, 232 flow. Second operand 10 states and 783 transitions. [2022-11-02 20:53:54,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 100 transitions, 495 flow [2022-11-02 20:53:54,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 100 transitions, 464 flow, removed 9 selfloop flow, removed 7 redundant places. [2022-11-02 20:53:54,625 INFO L231 Difference]: Finished difference. Result has 105 places, 74 transitions, 250 flow [2022-11-02 20:53:54,626 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=250, PETRI_PLACES=105, PETRI_TRANSITIONS=74} [2022-11-02 20:53:54,626 INFO L287 CegarLoopForPetriNet]: 83 programPoint places, 22 predicate places. [2022-11-02 20:53:54,627 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 74 transitions, 250 flow [2022-11-02 20:53:54,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.57142857142857) internal successors, (529), 7 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:54,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:53:54,627 INFO L208 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] [2022-11-02 20:53:54,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:53:54,628 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:53:54,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:54,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1675532424, now seen corresponding path program 1 times [2022-11-02 20:53:54,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:54,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153680248] [2022-11-02 20:53:54,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:54,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:54,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:54,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:53:54,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:53:54,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153680248] [2022-11-02 20:53:54,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153680248] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:53:54,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:53:54,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:53:54,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459452455] [2022-11-02 20:53:54,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:53:54,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:53:54,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:53:54,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:53:54,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:53:54,881 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2022-11-02 20:53:54,881 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 74 transitions, 250 flow. Second operand has 8 states, 8 states have (on average 75.5) internal successors, (604), 8 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:54,881 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:53:54,882 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2022-11-02 20:53:54,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:53:55,023 INFO L130 PetriNetUnfolder]: 5/87 cut-off events. [2022-11-02 20:53:55,023 INFO L131 PetriNetUnfolder]: For 196/219 co-relation queries the response was YES. [2022-11-02 20:53:55,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 87 events. 5/87 cut-off events. For 196/219 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 114 event pairs, 0 based on Foata normal form. 6/93 useless extension candidates. Maximal degree in co-relation 206. Up to 14 conditions per place. [2022-11-02 20:53:55,024 INFO L137 encePairwiseOnDemand]: 82/91 looper letters, 0 selfloop transitions, 0 changer transitions 77/77 dead transitions. [2022-11-02 20:53:55,024 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 77 transitions, 358 flow [2022-11-02 20:53:55,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:53:55,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-02 20:53:55,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 841 transitions. [2022-11-02 20:53:55,027 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8401598401598401 [2022-11-02 20:53:55,027 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 841 transitions. [2022-11-02 20:53:55,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 841 transitions. [2022-11-02 20:53:55,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:53:55,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 841 transitions. [2022-11-02 20:53:55,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 76.45454545454545) internal successors, (841), 11 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:55,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 91.0) internal successors, (1092), 12 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:55,032 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 91.0) internal successors, (1092), 12 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:55,032 INFO L175 Difference]: Start difference. First operand has 105 places, 74 transitions, 250 flow. Second operand 11 states and 841 transitions. [2022-11-02 20:53:55,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 77 transitions, 358 flow [2022-11-02 20:53:55,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 77 transitions, 291 flow, removed 23 selfloop flow, removed 10 redundant places. [2022-11-02 20:53:55,035 INFO L231 Difference]: Finished difference. Result has 94 places, 0 transitions, 0 flow [2022-11-02 20:53:55,035 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=94, PETRI_TRANSITIONS=0} [2022-11-02 20:53:55,035 INFO L287 CegarLoopForPetriNet]: 83 programPoint places, 11 predicate places. [2022-11-02 20:53:55,036 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 0 transitions, 0 flow [2022-11-02 20:53:55,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 75.5) internal successors, (604), 8 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:53:55,038 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-11-02 20:53:55,039 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-11-02 20:53:55,039 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-11-02 20:53:55,039 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-11-02 20:53:55,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:53:55,040 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:53:55,043 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-02 20:53:55,043 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:53:55,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:53:55 BasicIcfg [2022-11-02 20:53:55,054 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:53:55,054 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:53:55,055 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:53:55,055 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:53:55,055 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:53:49" (3/4) ... [2022-11-02 20:53:55,058 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-02 20:53:55,065 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-11-02 20:53:55,066 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-11-02 20:53:55,066 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-11-02 20:53:55,072 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-11-02 20:53:55,072 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-02 20:53:55,073 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-02 20:53:55,073 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-02 20:53:55,114 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f90ddf13-daeb-4acc-811a-6ce42a18a5ee/bin/uautomizer-Dbtcem3rbc/witness.graphml [2022-11-02 20:53:55,114 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:53:55,115 INFO L158 Benchmark]: Toolchain (without parser) took 6625.70ms. Allocated memory was 96.5MB in the beginning and 172.0MB in the end (delta: 75.5MB). Free memory was 72.7MB in the beginning and 68.1MB in the end (delta: 4.6MB). Peak memory consumption was 79.5MB. Max. memory is 16.1GB. [2022-11-02 20:53:55,116 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 96.5MB. Free memory is still 68.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:53:55,116 INFO L158 Benchmark]: CACSL2BoogieTranslator took 512.14ms. Allocated memory is still 96.5MB. Free memory was 72.4MB in the beginning and 59.8MB in the end (delta: 12.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-02 20:53:55,116 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.93ms. Allocated memory is still 96.5MB. Free memory was 59.8MB in the beginning and 57.7MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 20:53:55,117 INFO L158 Benchmark]: Boogie Preprocessor took 39.10ms. Allocated memory is still 96.5MB. Free memory was 57.7MB in the beginning and 56.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:53:55,117 INFO L158 Benchmark]: RCFGBuilder took 495.74ms. Allocated memory is still 96.5MB. Free memory was 56.1MB in the beginning and 43.0MB in the end (delta: 13.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-02 20:53:55,117 INFO L158 Benchmark]: TraceAbstraction took 5432.08ms. Allocated memory was 96.5MB in the beginning and 172.0MB in the end (delta: 75.5MB). Free memory was 42.3MB in the beginning and 70.2MB in the end (delta: -27.9MB). Peak memory consumption was 49.6MB. Max. memory is 16.1GB. [2022-11-02 20:53:55,118 INFO L158 Benchmark]: Witness Printer took 60.01ms. Allocated memory is still 172.0MB. Free memory was 70.2MB in the beginning and 68.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:53:55,119 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 96.5MB. Free memory is still 68.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 512.14ms. Allocated memory is still 96.5MB. Free memory was 72.4MB in the beginning and 59.8MB in the end (delta: 12.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 77.93ms. Allocated memory is still 96.5MB. Free memory was 59.8MB in the beginning and 57.7MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.10ms. Allocated memory is still 96.5MB. Free memory was 57.7MB in the beginning and 56.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 495.74ms. Allocated memory is still 96.5MB. Free memory was 56.1MB in the beginning and 43.0MB in the end (delta: 13.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 5432.08ms. Allocated memory was 96.5MB in the beginning and 172.0MB in the end (delta: 75.5MB). Free memory was 42.3MB in the beginning and 70.2MB in the end (delta: -27.9MB). Peak memory consumption was 49.6MB. Max. memory is 16.1GB. * Witness Printer took 60.01ms. Allocated memory is still 172.0MB. Free memory was 70.2MB in the beginning and 68.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 114 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.2s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 294 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 294 mSDsluCounter, 507 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 483 mSDsCounter, 78 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 465 IncrementalHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 78 mSolverCounterUnsat, 118 mSDtfsCounter, 465 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 107 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=301occurred in iteration=3, InterpolantAutomatonStates: 83, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 478 NumberOfCodeBlocks, 478 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 470 ConstructedInterpolants, 0 QuantifiedInterpolants, 1646 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-02 20:53:55,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f90ddf13-daeb-4acc-811a-6ce42a18a5ee/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE