./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/test-easy6.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1342971-79e8-4ef5-87e4-e79504e248ce/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1342971-79e8-4ef5-87e4-e79504e248ce/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1342971-79e8-4ef5-87e4-e79504e248ce/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1342971-79e8-4ef5-87e4-e79504e248ce/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/test-easy6.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1342971-79e8-4ef5-87e4-e79504e248ce/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1342971-79e8-4ef5-87e4-e79504e248ce/bin/uautomizer-UnR33cPsHg --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e29a676a5171b2e56cc2900cb5470509b7d8cacfca71c5e2d0aea36c369ff26e ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:37:54,908 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:37:54,911 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:37:54,967 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:37:54,968 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:37:54,973 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:37:54,976 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:37:54,982 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:37:54,986 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:37:54,993 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:37:54,995 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:37:54,998 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:37:54,998 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:37:55,002 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:37:55,005 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:37:55,011 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:37:55,013 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:37:55,015 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:37:55,018 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:37:55,031 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:37:55,034 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:37:55,036 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:37:55,041 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:37:55,042 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:37:55,056 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:37:55,056 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:37:55,057 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:37:55,060 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:37:55,061 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:37:55,064 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:37:55,064 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:37:55,066 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:37:55,069 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:37:55,070 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:37:55,073 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:37:55,073 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:37:55,074 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:37:55,075 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:37:55,075 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:37:55,076 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:37:55,077 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:37:55,079 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1342971-79e8-4ef5-87e4-e79504e248ce/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 09:37:55,136 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:37:55,137 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:37:55,138 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:37:55,138 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:37:55,148 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:37:55,149 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:37:55,149 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:37:55,150 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:37:55,150 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:37:55,150 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:37:55,152 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:37:55,152 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:37:55,153 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:37:55,153 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:37:55,153 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:37:55,154 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:37:55,154 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:37:55,154 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:37:55,154 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:37:55,155 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:37:55,155 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:37:55,155 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:37:55,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:37:55,156 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:37:55,156 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:37:55,157 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:37:55,157 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:37:55,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:37:55,158 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:37:55,160 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:37:55,161 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:37:55,161 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:37:55,162 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_e1342971-79e8-4ef5-87e4-e79504e248ce/bin/uautomizer-UnR33cPsHg/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1342971-79e8-4ef5-87e4-e79504e248ce/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e29a676a5171b2e56cc2900cb5470509b7d8cacfca71c5e2d0aea36c369ff26e [2021-10-28 09:37:55,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:37:55,574 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:37:55,577 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:37:55,579 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:37:55,580 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:37:55,581 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1342971-79e8-4ef5-87e4-e79504e248ce/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/weaver/test-easy6.wvr.c [2021-10-28 09:37:55,675 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1342971-79e8-4ef5-87e4-e79504e248ce/bin/uautomizer-UnR33cPsHg/data/a18439f11/82bbc80bf32148dc85cd3352952ea6d3/FLAG4d3aee62d [2021-10-28 09:37:56,380 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:37:56,381 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1342971-79e8-4ef5-87e4-e79504e248ce/sv-benchmarks/c/weaver/test-easy6.wvr.c [2021-10-28 09:37:56,390 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1342971-79e8-4ef5-87e4-e79504e248ce/bin/uautomizer-UnR33cPsHg/data/a18439f11/82bbc80bf32148dc85cd3352952ea6d3/FLAG4d3aee62d [2021-10-28 09:37:56,731 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1342971-79e8-4ef5-87e4-e79504e248ce/bin/uautomizer-UnR33cPsHg/data/a18439f11/82bbc80bf32148dc85cd3352952ea6d3 [2021-10-28 09:37:56,734 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:37:56,736 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:37:56,738 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:37:56,739 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:37:56,744 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:37:56,745 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:37:56" (1/1) ... [2021-10-28 09:37:56,748 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ed36a75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:56, skipping insertion in model container [2021-10-28 09:37:56,749 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:37:56" (1/1) ... [2021-10-28 09:37:56,758 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:37:56,791 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:37:57,102 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1342971-79e8-4ef5-87e4-e79504e248ce/sv-benchmarks/c/weaver/test-easy6.wvr.c[3046,3059] [2021-10-28 09:37:57,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:37:57,119 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:37:57,147 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1342971-79e8-4ef5-87e4-e79504e248ce/sv-benchmarks/c/weaver/test-easy6.wvr.c[3046,3059] [2021-10-28 09:37:57,148 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:37:57,166 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:37:57,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:57 WrapperNode [2021-10-28 09:37:57,167 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:37:57,169 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:37:57,169 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:37:57,169 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:37:57,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:57" (1/1) ... [2021-10-28 09:37:57,188 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:57" (1/1) ... [2021-10-28 09:37:57,237 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:37:57,238 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:37:57,238 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:37:57,238 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:37:57,249 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:57" (1/1) ... [2021-10-28 09:37:57,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:57" (1/1) ... [2021-10-28 09:37:57,253 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:57" (1/1) ... [2021-10-28 09:37:57,253 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:57" (1/1) ... [2021-10-28 09:37:57,260 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:57" (1/1) ... [2021-10-28 09:37:57,262 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:57" (1/1) ... [2021-10-28 09:37:57,264 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:57" (1/1) ... [2021-10-28 09:37:57,268 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:37:57,282 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:37:57,282 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:37:57,282 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:37:57,286 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:57" (1/1) ... [2021-10-28 09:37:57,298 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:37:57,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1342971-79e8-4ef5-87e4-e79504e248ce/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:37:57,336 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1342971-79e8-4ef5-87e4-e79504e248ce/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:37:57,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1342971-79e8-4ef5-87e4-e79504e248ce/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:37:57,393 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-28 09:37:57,393 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-28 09:37:57,394 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-28 09:37:57,394 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-28 09:37:57,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:37:57,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:37:57,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 09:37:57,394 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-28 09:37:57,394 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-28 09:37:57,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:37:57,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:37:57,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 09:37:57,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:37:57,397 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-28 09:37:57,991 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:37:57,991 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-10-28 09:37:57,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:37:57 BoogieIcfgContainer [2021-10-28 09:37:57,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:37:58,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:37:58,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:37:58,005 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:37:58,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:37:56" (1/3) ... [2021-10-28 09:37:58,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb6a47e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:37:58, skipping insertion in model container [2021-10-28 09:37:58,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:57" (2/3) ... [2021-10-28 09:37:58,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb6a47e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:37:58, skipping insertion in model container [2021-10-28 09:37:58,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:37:57" (3/3) ... [2021-10-28 09:37:58,010 INFO L111 eAbstractionObserver]: Analyzing ICFG test-easy6.wvr.c [2021-10-28 09:37:58,018 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-28 09:37:58,019 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:37:58,019 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 09:37:58,019 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-28 09:37:58,069 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:58,070 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:58,070 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:58,070 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:58,072 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:58,072 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:58,073 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:58,073 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:58,074 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:58,075 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:58,075 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:58,075 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:58,077 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:58,077 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:58,078 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:58,078 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:58,081 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:58,081 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:58,082 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:58,083 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:58,084 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:58,084 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:58,085 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:58,085 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:58,092 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:58,092 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:58,093 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:58,094 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:58,100 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:58,100 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:58,100 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:58,101 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:58,113 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-28 09:37:58,190 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:37:58,207 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 09:37:58,207 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-28 09:37:58,235 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 77 transitions, 170 flow [2021-10-28 09:37:58,337 INFO L129 PetriNetUnfolder]: 1/75 cut-off events. [2021-10-28 09:37:58,337 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-28 09:37:58,340 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 75 events. 1/75 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 41 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2021-10-28 09:37:58,340 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 77 transitions, 170 flow [2021-10-28 09:37:58,348 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 67 transitions, 146 flow [2021-10-28 09:37:58,396 INFO L129 PetriNetUnfolder]: 1/66 cut-off events. [2021-10-28 09:37:58,397 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-28 09:37:58,397 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:37:58,398 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:37:58,399 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:37:58,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:37:58,407 INFO L85 PathProgramCache]: Analyzing trace with hash 569742625, now seen corresponding path program 1 times [2021-10-28 09:37:58,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:37:58,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576201917] [2021-10-28 09:37:58,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:37:58,423 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:37:58,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:37:59,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:37:59,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:37:59,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576201917] [2021-10-28 09:37:59,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576201917] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:37:59,111 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:37:59,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-28 09:37:59,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205087298] [2021-10-28 09:37:59,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:37:59,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:37:59,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:37:59,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:37:59,151 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 77 [2021-10-28 09:37:59,158 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 67 transitions, 146 flow. Second operand has 9 states, 9 states have (on average 64.22222222222223) internal successors, (578), 9 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:37:59,159 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:37:59,159 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 77 [2021-10-28 09:37:59,160 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:37:59,413 INFO L129 PetriNetUnfolder]: 1/125 cut-off events. [2021-10-28 09:37:59,413 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-10-28 09:37:59,414 INFO L84 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 125 events. 1/125 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 307 event pairs, 1 based on Foata normal form. 4/125 useless extension candidates. Maximal degree in co-relation 83. Up to 7 conditions per place. [2021-10-28 09:37:59,416 INFO L132 encePairwiseOnDemand]: 66/77 looper letters, 16 selfloop transitions, 7 changer transitions 9/86 dead transitions. [2021-10-28 09:37:59,416 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 86 transitions, 248 flow [2021-10-28 09:37:59,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 09:37:59,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-28 09:37:59,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 856 transitions. [2021-10-28 09:37:59,440 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8551448551448552 [2021-10-28 09:37:59,441 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 856 transitions. [2021-10-28 09:37:59,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 856 transitions. [2021-10-28 09:37:59,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:37:59,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 856 transitions. [2021-10-28 09:37:59,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 65.84615384615384) internal successors, (856), 13 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:37:59,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 77.0) internal successors, (1078), 14 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:37:59,472 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 77.0) internal successors, (1078), 14 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:37:59,475 INFO L186 Difference]: Start difference. First operand has 73 places, 67 transitions, 146 flow. Second operand 13 states and 856 transitions. [2021-10-28 09:37:59,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 86 transitions, 248 flow [2021-10-28 09:37:59,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 86 transitions, 240 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-10-28 09:37:59,485 INFO L242 Difference]: Finished difference. Result has 86 places, 69 transitions, 175 flow [2021-10-28 09:37:59,488 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=175, PETRI_PLACES=86, PETRI_TRANSITIONS=69} [2021-10-28 09:37:59,489 INFO L334 CegarLoopForPetriNet]: 73 programPoint places, 13 predicate places. [2021-10-28 09:37:59,490 INFO L470 AbstractCegarLoop]: Abstraction has has 86 places, 69 transitions, 175 flow [2021-10-28 09:37:59,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 64.22222222222223) internal successors, (578), 9 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:37:59,491 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:37:59,491 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:37:59,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:37:59,492 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:37:59,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:37:59,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1954672369, now seen corresponding path program 2 times [2021-10-28 09:37:59,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:37:59,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761933179] [2021-10-28 09:37:59,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:37:59,494 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:37:59,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:37:59,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:37:59,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:37:59,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761933179] [2021-10-28 09:37:59,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761933179] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:37:59,657 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:37:59,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:37:59,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258548501] [2021-10-28 09:37:59,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:37:59,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:37:59,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:37:59,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:37:59,686 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 77 [2021-10-28 09:37:59,688 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 69 transitions, 175 flow. Second operand has 7 states, 7 states have (on average 64.71428571428571) internal successors, (453), 7 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:37:59,688 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:37:59,688 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 77 [2021-10-28 09:37:59,688 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:37:59,892 INFO L129 PetriNetUnfolder]: 27/315 cut-off events. [2021-10-28 09:37:59,893 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2021-10-28 09:37:59,897 INFO L84 FinitePrefix]: Finished finitePrefix Result has 469 conditions, 315 events. 27/315 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1639 event pairs, 3 based on Foata normal form. 2/311 useless extension candidates. Maximal degree in co-relation 443. Up to 19 conditions per place. [2021-10-28 09:37:59,900 INFO L132 encePairwiseOnDemand]: 68/77 looper letters, 15 selfloop transitions, 16 changer transitions 2/90 dead transitions. [2021-10-28 09:37:59,901 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 90 transitions, 283 flow [2021-10-28 09:37:59,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:37:59,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 09:37:59,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 601 transitions. [2021-10-28 09:37:59,905 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8672438672438673 [2021-10-28 09:37:59,905 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 601 transitions. [2021-10-28 09:37:59,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 601 transitions. [2021-10-28 09:37:59,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:37:59,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 601 transitions. [2021-10-28 09:37:59,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 66.77777777777777) internal successors, (601), 9 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:37:59,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 77.0) internal successors, (770), 10 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:37:59,915 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 77.0) internal successors, (770), 10 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:37:59,915 INFO L186 Difference]: Start difference. First operand has 86 places, 69 transitions, 175 flow. Second operand 9 states and 601 transitions. [2021-10-28 09:37:59,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 90 transitions, 283 flow [2021-10-28 09:37:59,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 90 transitions, 275 flow, removed 3 selfloop flow, removed 4 redundant places. [2021-10-28 09:37:59,927 INFO L242 Difference]: Finished difference. Result has 85 places, 82 transitions, 250 flow [2021-10-28 09:37:59,927 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=250, PETRI_PLACES=85, PETRI_TRANSITIONS=82} [2021-10-28 09:37:59,928 INFO L334 CegarLoopForPetriNet]: 73 programPoint places, 12 predicate places. [2021-10-28 09:37:59,928 INFO L470 AbstractCegarLoop]: Abstraction has has 85 places, 82 transitions, 250 flow [2021-10-28 09:37:59,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 64.71428571428571) internal successors, (453), 7 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:37:59,930 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:37:59,931 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:37:59,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:37:59,932 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:37:59,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:37:59,933 INFO L85 PathProgramCache]: Analyzing trace with hash -775902457, now seen corresponding path program 3 times [2021-10-28 09:37:59,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:37:59,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255226877] [2021-10-28 09:37:59,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:37:59,934 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:38:00,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:00,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:38:00,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:38:00,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255226877] [2021-10-28 09:38:00,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255226877] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:38:00,165 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:38:00,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:38:00,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252368640] [2021-10-28 09:38:00,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:38:00,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:38:00,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:38:00,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:38:00,170 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 77 [2021-10-28 09:38:00,172 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 82 transitions, 250 flow. Second operand has 7 states, 7 states have (on average 64.71428571428571) internal successors, (453), 7 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:00,172 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:38:00,172 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 77 [2021-10-28 09:38:00,172 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:38:00,402 INFO L129 PetriNetUnfolder]: 19/241 cut-off events. [2021-10-28 09:38:00,402 INFO L130 PetriNetUnfolder]: For 73/85 co-relation queries the response was YES. [2021-10-28 09:38:00,405 INFO L84 FinitePrefix]: Finished finitePrefix Result has 428 conditions, 241 events. 19/241 cut-off events. For 73/85 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1048 event pairs, 3 based on Foata normal form. 12/250 useless extension candidates. Maximal degree in co-relation 316. Up to 19 conditions per place. [2021-10-28 09:38:00,407 INFO L132 encePairwiseOnDemand]: 68/77 looper letters, 13 selfloop transitions, 13 changer transitions 6/89 dead transitions. [2021-10-28 09:38:00,407 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 89 transitions, 340 flow [2021-10-28 09:38:00,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:38:00,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 09:38:00,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 599 transitions. [2021-10-28 09:38:00,411 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8643578643578643 [2021-10-28 09:38:00,412 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 599 transitions. [2021-10-28 09:38:00,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 599 transitions. [2021-10-28 09:38:00,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:38:00,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 599 transitions. [2021-10-28 09:38:00,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 66.55555555555556) internal successors, (599), 9 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) [2021-10-28 09:38:00,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 77.0) internal successors, (770), 10 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:00,420 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 77.0) internal successors, (770), 10 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:00,420 INFO L186 Difference]: Start difference. First operand has 85 places, 82 transitions, 250 flow. Second operand 9 states and 599 transitions. [2021-10-28 09:38:00,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 89 transitions, 340 flow [2021-10-28 09:38:00,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 89 transitions, 336 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-28 09:38:00,431 INFO L242 Difference]: Finished difference. Result has 95 places, 79 transitions, 278 flow [2021-10-28 09:38:00,431 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=278, PETRI_PLACES=95, PETRI_TRANSITIONS=79} [2021-10-28 09:38:00,432 INFO L334 CegarLoopForPetriNet]: 73 programPoint places, 22 predicate places. [2021-10-28 09:38:00,432 INFO L470 AbstractCegarLoop]: Abstraction has has 95 places, 79 transitions, 278 flow [2021-10-28 09:38:00,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 64.71428571428571) internal successors, (453), 7 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:00,433 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:38:00,434 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:38:00,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 09:38:00,434 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:38:00,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:38:00,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1665564229, now seen corresponding path program 4 times [2021-10-28 09:38:00,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:38:00,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938307458] [2021-10-28 09:38:00,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:00,445 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:38:00,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:00,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:38:00,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:38:00,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938307458] [2021-10-28 09:38:00,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938307458] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:38:00,607 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:38:00,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:38:00,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271476436] [2021-10-28 09:38:00,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:38:00,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:38:00,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:38:00,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:38:00,610 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 77 [2021-10-28 09:38:00,611 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 79 transitions, 278 flow. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:00,611 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:38:00,611 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 77 [2021-10-28 09:38:00,612 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:38:00,670 INFO L129 PetriNetUnfolder]: 8/192 cut-off events. [2021-10-28 09:38:00,670 INFO L130 PetriNetUnfolder]: For 95/96 co-relation queries the response was YES. [2021-10-28 09:38:00,671 INFO L84 FinitePrefix]: Finished finitePrefix Result has 343 conditions, 192 events. 8/192 cut-off events. For 95/96 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 686 event pairs, 1 based on Foata normal form. 4/193 useless extension candidates. Maximal degree in co-relation 238. Up to 12 conditions per place. [2021-10-28 09:38:00,672 INFO L132 encePairwiseOnDemand]: 74/77 looper letters, 2 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2021-10-28 09:38:00,673 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 79 transitions, 286 flow [2021-10-28 09:38:00,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:38:00,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-28 09:38:00,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 218 transitions. [2021-10-28 09:38:00,682 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9437229437229437 [2021-10-28 09:38:00,683 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 218 transitions. [2021-10-28 09:38:00,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 218 transitions. [2021-10-28 09:38:00,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:38:00,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 218 transitions. [2021-10-28 09:38:00,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:00,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:00,686 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:00,686 INFO L186 Difference]: Start difference. First operand has 95 places, 79 transitions, 278 flow. Second operand 3 states and 218 transitions. [2021-10-28 09:38:00,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 79 transitions, 286 flow [2021-10-28 09:38:00,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 79 transitions, 266 flow, removed 1 selfloop flow, removed 6 redundant places. [2021-10-28 09:38:00,701 INFO L242 Difference]: Finished difference. Result has 90 places, 79 transitions, 266 flow [2021-10-28 09:38:00,702 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=90, PETRI_TRANSITIONS=79} [2021-10-28 09:38:00,702 INFO L334 CegarLoopForPetriNet]: 73 programPoint places, 17 predicate places. [2021-10-28 09:38:00,702 INFO L470 AbstractCegarLoop]: Abstraction has has 90 places, 79 transitions, 266 flow [2021-10-28 09:38:00,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:00,703 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:38:00,703 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:38:00,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 09:38:00,704 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:38:00,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:38:00,705 INFO L85 PathProgramCache]: Analyzing trace with hash -8249481, now seen corresponding path program 5 times [2021-10-28 09:38:00,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:38:00,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020820280] [2021-10-28 09:38:00,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:00,707 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:38:00,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:00,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:38:00,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:38:00,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020820280] [2021-10-28 09:38:00,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020820280] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:38:00,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:38:00,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:38:00,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156619737] [2021-10-28 09:38:00,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:38:00,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:38:00,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:38:00,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:38:00,943 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 77 [2021-10-28 09:38:00,944 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 79 transitions, 266 flow. Second operand has 8 states, 8 states have (on average 64.5) internal successors, (516), 8 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:00,944 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:38:00,944 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 77 [2021-10-28 09:38:00,945 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:38:01,243 INFO L129 PetriNetUnfolder]: 14/234 cut-off events. [2021-10-28 09:38:01,243 INFO L130 PetriNetUnfolder]: For 146/157 co-relation queries the response was YES. [2021-10-28 09:38:01,247 INFO L84 FinitePrefix]: Finished finitePrefix Result has 463 conditions, 234 events. 14/234 cut-off events. For 146/157 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 964 event pairs, 2 based on Foata normal form. 10/241 useless extension candidates. Maximal degree in co-relation 347. Up to 13 conditions per place. [2021-10-28 09:38:01,249 INFO L132 encePairwiseOnDemand]: 68/77 looper letters, 13 selfloop transitions, 19 changer transitions 3/92 dead transitions. [2021-10-28 09:38:01,249 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 92 transitions, 399 flow [2021-10-28 09:38:01,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:38:01,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-28 09:38:01,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 663 transitions. [2021-10-28 09:38:01,254 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.861038961038961 [2021-10-28 09:38:01,254 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 663 transitions. [2021-10-28 09:38:01,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 663 transitions. [2021-10-28 09:38:01,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:38:01,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 663 transitions. [2021-10-28 09:38:01,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 66.3) internal successors, (663), 10 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:01,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 77.0) internal successors, (847), 11 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:01,263 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 77.0) internal successors, (847), 11 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:01,264 INFO L186 Difference]: Start difference. First operand has 90 places, 79 transitions, 266 flow. Second operand 10 states and 663 transitions. [2021-10-28 09:38:01,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 92 transitions, 399 flow [2021-10-28 09:38:01,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 92 transitions, 395 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-28 09:38:01,271 INFO L242 Difference]: Finished difference. Result has 99 places, 83 transitions, 336 flow [2021-10-28 09:38:01,272 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=336, PETRI_PLACES=99, PETRI_TRANSITIONS=83} [2021-10-28 09:38:01,272 INFO L334 CegarLoopForPetriNet]: 73 programPoint places, 26 predicate places. [2021-10-28 09:38:01,273 INFO L470 AbstractCegarLoop]: Abstraction has has 99 places, 83 transitions, 336 flow [2021-10-28 09:38:01,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 64.5) internal successors, (516), 8 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:01,274 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:38:01,274 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:38:01,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 09:38:01,275 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:38:01,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:38:01,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1530038785, now seen corresponding path program 6 times [2021-10-28 09:38:01,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:38:01,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840596811] [2021-10-28 09:38:01,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:01,277 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:38:01,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:01,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:38:01,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:38:01,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840596811] [2021-10-28 09:38:01,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840596811] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:38:01,524 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:38:01,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-28 09:38:01,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151648134] [2021-10-28 09:38:01,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:38:01,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:38:01,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:38:01,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:38:01,528 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 77 [2021-10-28 09:38:01,529 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 83 transitions, 336 flow. Second operand has 9 states, 9 states have (on average 64.22222222222223) internal successors, (578), 9 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:01,529 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:38:01,529 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 77 [2021-10-28 09:38:01,529 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:38:01,707 INFO L129 PetriNetUnfolder]: 7/204 cut-off events. [2021-10-28 09:38:01,708 INFO L130 PetriNetUnfolder]: For 146/148 co-relation queries the response was YES. [2021-10-28 09:38:01,708 INFO L84 FinitePrefix]: Finished finitePrefix Result has 425 conditions, 204 events. 7/204 cut-off events. For 146/148 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 793 event pairs, 1 based on Foata normal form. 3/205 useless extension candidates. Maximal degree in co-relation 294. Up to 13 conditions per place. [2021-10-28 09:38:01,710 INFO L132 encePairwiseOnDemand]: 69/77 looper letters, 11 selfloop transitions, 6 changer transitions 17/90 dead transitions. [2021-10-28 09:38:01,710 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 90 transitions, 394 flow [2021-10-28 09:38:01,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:38:01,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-28 09:38:01,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 653 transitions. [2021-10-28 09:38:01,714 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8480519480519481 [2021-10-28 09:38:01,714 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 653 transitions. [2021-10-28 09:38:01,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 653 transitions. [2021-10-28 09:38:01,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:38:01,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 653 transitions. [2021-10-28 09:38:01,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 65.3) internal successors, (653), 10 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:01,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 77.0) internal successors, (847), 11 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:01,726 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 77.0) internal successors, (847), 11 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:01,726 INFO L186 Difference]: Start difference. First operand has 99 places, 83 transitions, 336 flow. Second operand 10 states and 653 transitions. [2021-10-28 09:38:01,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 90 transitions, 394 flow [2021-10-28 09:38:01,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 90 transitions, 387 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-10-28 09:38:01,738 INFO L242 Difference]: Finished difference. Result has 108 places, 69 transitions, 238 flow [2021-10-28 09:38:01,738 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=238, PETRI_PLACES=108, PETRI_TRANSITIONS=69} [2021-10-28 09:38:01,739 INFO L334 CegarLoopForPetriNet]: 73 programPoint places, 35 predicate places. [2021-10-28 09:38:01,739 INFO L470 AbstractCegarLoop]: Abstraction has has 108 places, 69 transitions, 238 flow [2021-10-28 09:38:01,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 64.22222222222223) internal successors, (578), 9 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:01,741 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:38:01,741 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:38:01,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 09:38:01,742 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:38:01,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:38:01,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1634628503, now seen corresponding path program 7 times [2021-10-28 09:38:01,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:38:01,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993249680] [2021-10-28 09:38:01,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:01,747 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:38:01,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:01,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:38:01,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:38:01,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993249680] [2021-10-28 09:38:01,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993249680] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:38:01,924 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:38:01,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:38:01,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92232942] [2021-10-28 09:38:01,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:38:01,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:38:01,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:38:01,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:38:01,927 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 77 [2021-10-28 09:38:01,928 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 69 transitions, 238 flow. Second operand has 8 states, 8 states have (on average 64.5) internal successors, (516), 8 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:01,928 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:38:01,929 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 77 [2021-10-28 09:38:01,929 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:38:02,065 INFO L129 PetriNetUnfolder]: 5/124 cut-off events. [2021-10-28 09:38:02,065 INFO L130 PetriNetUnfolder]: For 99/105 co-relation queries the response was YES. [2021-10-28 09:38:02,066 INFO L84 FinitePrefix]: Finished finitePrefix Result has 266 conditions, 124 events. 5/124 cut-off events. For 99/105 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 272 event pairs, 1 based on Foata normal form. 8/131 useless extension candidates. Maximal degree in co-relation 243. Up to 8 conditions per place. [2021-10-28 09:38:02,066 INFO L132 encePairwiseOnDemand]: 68/77 looper letters, 5 selfloop transitions, 10 changer transitions 1/71 dead transitions. [2021-10-28 09:38:02,067 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 71 transitions, 278 flow [2021-10-28 09:38:02,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:38:02,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 09:38:02,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 584 transitions. [2021-10-28 09:38:02,070 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8427128427128427 [2021-10-28 09:38:02,070 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 584 transitions. [2021-10-28 09:38:02,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 584 transitions. [2021-10-28 09:38:02,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:38:02,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 584 transitions. [2021-10-28 09:38:02,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 64.88888888888889) internal successors, (584), 9 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:02,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 77.0) internal successors, (770), 10 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:02,077 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 77.0) internal successors, (770), 10 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:02,077 INFO L186 Difference]: Start difference. First operand has 108 places, 69 transitions, 238 flow. Second operand 9 states and 584 transitions. [2021-10-28 09:38:02,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 71 transitions, 278 flow [2021-10-28 09:38:02,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 71 transitions, 214 flow, removed 7 selfloop flow, removed 24 redundant places. [2021-10-28 09:38:02,082 INFO L242 Difference]: Finished difference. Result has 87 places, 69 transitions, 203 flow [2021-10-28 09:38:02,082 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=203, PETRI_PLACES=87, PETRI_TRANSITIONS=69} [2021-10-28 09:38:02,082 INFO L334 CegarLoopForPetriNet]: 73 programPoint places, 14 predicate places. [2021-10-28 09:38:02,082 INFO L470 AbstractCegarLoop]: Abstraction has has 87 places, 69 transitions, 203 flow [2021-10-28 09:38:02,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 64.5) internal successors, (516), 8 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:02,083 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:38:02,083 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:38:02,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 09:38:02,084 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-28 09:38:02,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:38:02,084 INFO L85 PathProgramCache]: Analyzing trace with hash 592326685, now seen corresponding path program 8 times [2021-10-28 09:38:02,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:38:02,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099997959] [2021-10-28 09:38:02,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:02,086 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:38:02,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:02,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:38:02,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:38:02,176 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099997959] [2021-10-28 09:38:02,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099997959] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:38:02,177 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:38:02,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:38:02,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87375640] [2021-10-28 09:38:02,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:38:02,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:38:02,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:38:02,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:38:02,180 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 77 [2021-10-28 09:38:02,181 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 69 transitions, 203 flow. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:02,181 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:38:02,181 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 77 [2021-10-28 09:38:02,181 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:38:02,191 INFO L129 PetriNetUnfolder]: 0/53 cut-off events. [2021-10-28 09:38:02,191 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-28 09:38:02,192 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 53 events. 0/53 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 13 event pairs, 0 based on Foata normal form. 1/54 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-10-28 09:38:02,195 INFO L132 encePairwiseOnDemand]: 74/77 looper letters, 0 selfloop transitions, 0 changer transitions 53/53 dead transitions. [2021-10-28 09:38:02,195 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 53 transitions, 152 flow [2021-10-28 09:38:02,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:38:02,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-28 09:38:02,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 218 transitions. [2021-10-28 09:38:02,197 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9437229437229437 [2021-10-28 09:38:02,197 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 218 transitions. [2021-10-28 09:38:02,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 218 transitions. [2021-10-28 09:38:02,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:38:02,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 218 transitions. [2021-10-28 09:38:02,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:02,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:02,201 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:02,220 INFO L186 Difference]: Start difference. First operand has 87 places, 69 transitions, 203 flow. Second operand 3 states and 218 transitions. [2021-10-28 09:38:02,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 53 transitions, 152 flow [2021-10-28 09:38:02,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 53 transitions, 131 flow, removed 1 selfloop flow, removed 11 redundant places. [2021-10-28 09:38:02,222 INFO L242 Difference]: Finished difference. Result has 63 places, 0 transitions, 0 flow [2021-10-28 09:38:02,222 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=63, PETRI_TRANSITIONS=0} [2021-10-28 09:38:02,222 INFO L334 CegarLoopForPetriNet]: 73 programPoint places, -10 predicate places. [2021-10-28 09:38:02,223 INFO L470 AbstractCegarLoop]: Abstraction has has 63 places, 0 transitions, 0 flow [2021-10-28 09:38:02,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:02,226 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:38:02,227 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-28 09:38:02,228 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-28 09:38:02,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 09:38:02,234 INFO L731 BasicCegarLoop]: Path program histogram: [8] [2021-10-28 09:38:02,237 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-28 09:38:02,237 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:38:02,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:38:02 BasicIcfg [2021-10-28 09:38:02,242 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:38:02,243 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:38:02,243 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:38:02,243 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:38:02,244 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:37:57" (3/4) ... [2021-10-28 09:38:02,248 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 09:38:02,255 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-28 09:38:02,255 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-28 09:38:02,262 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-10-28 09:38:02,263 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 09:38:02,263 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:38:02,263 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:38:02,331 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1342971-79e8-4ef5-87e4-e79504e248ce/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:38:02,331 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:38:02,333 INFO L168 Benchmark]: Toolchain (without parser) took 5596.20 ms. Allocated memory was 94.4 MB in the beginning and 148.9 MB in the end (delta: 54.5 MB). Free memory was 58.8 MB in the beginning and 120.7 MB in the end (delta: -61.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:38:02,334 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 94.4 MB. Free memory was 64.7 MB in the beginning and 64.6 MB in the end (delta: 32.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:38:02,335 INFO L168 Benchmark]: CACSL2BoogieTranslator took 429.54 ms. Allocated memory is still 94.4 MB. Free memory was 58.6 MB in the beginning and 69.5 MB in the end (delta: -10.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:38:02,335 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.17 ms. Allocated memory is still 94.4 MB. Free memory was 69.5 MB in the beginning and 67.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:38:02,336 INFO L168 Benchmark]: Boogie Preprocessor took 43.22 ms. Allocated memory is still 94.4 MB. Free memory was 67.7 MB in the beginning and 66.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:38:02,336 INFO L168 Benchmark]: RCFGBuilder took 716.69 ms. Allocated memory is still 94.4 MB. Free memory was 66.6 MB in the beginning and 52.3 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-28 09:38:02,345 INFO L168 Benchmark]: TraceAbstraction took 4242.06 ms. Allocated memory was 94.4 MB in the beginning and 148.9 MB in the end (delta: 54.5 MB). Free memory was 51.9 MB in the beginning and 122.8 MB in the end (delta: -70.9 MB). Peak memory consumption was 39.7 MB. Max. memory is 16.1 GB. [2021-10-28 09:38:02,350 INFO L168 Benchmark]: Witness Printer took 88.62 ms. Allocated memory is still 148.9 MB. Free memory was 122.8 MB in the beginning and 120.7 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:38:02,356 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 94.4 MB. Free memory was 64.7 MB in the beginning and 64.6 MB in the end (delta: 32.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 429.54 ms. Allocated memory is still 94.4 MB. Free memory was 58.6 MB in the beginning and 69.5 MB in the end (delta: -10.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 68.17 ms. Allocated memory is still 94.4 MB. Free memory was 69.5 MB in the beginning and 67.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.22 ms. Allocated memory is still 94.4 MB. Free memory was 67.7 MB in the beginning and 66.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 716.69 ms. Allocated memory is still 94.4 MB. Free memory was 66.6 MB in the beginning and 52.3 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4242.06 ms. Allocated memory was 94.4 MB in the beginning and 148.9 MB in the end (delta: 54.5 MB). Free memory was 51.9 MB in the beginning and 122.8 MB in the end (delta: -70.9 MB). Peak memory consumption was 39.7 MB. Max. memory is 16.1 GB. * Witness Printer took 88.62 ms. Allocated memory is still 148.9 MB. Free memory was 122.8 MB in the beginning and 120.7 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 116]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 103 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.0s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 75 SDtfs, 162 SDslu, 163 SDs, 0 SdLazy, 371 SolverSat, 54 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=336occurred in iteration=5, InterpolantAutomatonStates: 66, 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, 0.5s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 520 NumberOfCodeBlocks, 520 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 512 ConstructedInterpolants, 0 QuantifiedInterpolants, 1446 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! [2021-10-28 09:38:02,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1342971-79e8-4ef5-87e4-e79504e248ce/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...