./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i --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_e3ac1907-d6be-4b22-b5c6-2adec9ad90c2/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ac1907-d6be-4b22-b5c6-2adec9ad90c2/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_e3ac1907-d6be-4b22-b5c6-2adec9ad90c2/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ac1907-d6be-4b22-b5c6-2adec9ad90c2/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ac1907-d6be-4b22-b5c6-2adec9ad90c2/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_e3ac1907-d6be-4b22-b5c6-2adec9ad90c2/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 620249144b3aef02054b29d02209f65efa0a8a0e9bea7542b79877bee937dfa8 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 09:26:16,849 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:26:16,852 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:26:16,907 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:26:16,908 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:26:16,913 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:26:16,915 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:26:16,919 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:26:16,922 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:26:16,928 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:26:16,929 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:26:16,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:26:16,932 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:26:16,935 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:26:16,937 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:26:16,942 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:26:16,947 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:26:16,949 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:26:16,951 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:26:16,959 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:26:16,961 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:26:16,962 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:26:16,966 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:26:16,967 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:26:16,976 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:26:16,977 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:26:16,978 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:26:16,980 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:26:16,981 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:26:16,982 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:26:16,983 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:26:16,984 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:26:16,987 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:26:16,988 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:26:16,990 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:26:16,990 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:26:16,991 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:26:16,992 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:26:16,992 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:26:16,993 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:26:16,994 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:26:16,995 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ac1907-d6be-4b22-b5c6-2adec9ad90c2/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 09:26:17,039 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:26:17,040 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:26:17,040 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:26:17,041 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:26:17,049 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:26:17,049 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:26:17,049 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:26:17,049 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:26:17,050 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:26:17,050 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:26:17,051 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:26:17,051 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:26:17,052 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:26:17,052 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:26:17,052 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:26:17,052 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:26:17,053 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:26:17,053 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:26:17,053 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:26:17,053 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:26:17,054 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:26:17,054 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:26:17,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:26:17,054 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:26:17,055 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:26:17,055 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:26:17,055 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:26:17,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:26:17,056 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:26:17,057 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:26:17,057 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:26:17,058 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:26:17,058 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_e3ac1907-d6be-4b22-b5c6-2adec9ad90c2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ac1907-d6be-4b22-b5c6-2adec9ad90c2/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 620249144b3aef02054b29d02209f65efa0a8a0e9bea7542b79877bee937dfa8 [2021-10-28 09:26:17,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:26:17,355 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:26:17,358 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:26:17,359 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:26:17,360 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:26:17,361 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ac1907-d6be-4b22-b5c6-2adec9ad90c2/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i [2021-10-28 09:26:17,418 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ac1907-d6be-4b22-b5c6-2adec9ad90c2/bin/uautomizer-UnR33cPsHg/data/034f14051/cba273a3b5924fcab111bd340972ce13/FLAGc20739ead [2021-10-28 09:26:17,947 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:26:17,947 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ac1907-d6be-4b22-b5c6-2adec9ad90c2/sv-benchmarks/c/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i [2021-10-28 09:26:17,962 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ac1907-d6be-4b22-b5c6-2adec9ad90c2/bin/uautomizer-UnR33cPsHg/data/034f14051/cba273a3b5924fcab111bd340972ce13/FLAGc20739ead [2021-10-28 09:26:18,247 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ac1907-d6be-4b22-b5c6-2adec9ad90c2/bin/uautomizer-UnR33cPsHg/data/034f14051/cba273a3b5924fcab111bd340972ce13 [2021-10-28 09:26:18,249 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:26:18,251 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:26:18,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:26:18,256 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:26:18,259 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:26:18,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:26:18" (1/1) ... [2021-10-28 09:26:18,261 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5610d0a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:26:18, skipping insertion in model container [2021-10-28 09:26:18,261 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:26:18" (1/1) ... [2021-10-28 09:26:18,277 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:26:18,316 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:26:18,508 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_e3ac1907-d6be-4b22-b5c6-2adec9ad90c2/sv-benchmarks/c/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i[841,854] [2021-10-28 09:26:18,649 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:26:18,662 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:26:18,674 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_e3ac1907-d6be-4b22-b5c6-2adec9ad90c2/sv-benchmarks/c/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i[841,854] [2021-10-28 09:26:18,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:26:18,741 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:26:18,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:26:18 WrapperNode [2021-10-28 09:26:18,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:26:18,743 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:26:18,743 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:26:18,743 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:26:18,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:26:18" (1/1) ... [2021-10-28 09:26:18,765 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:26:18" (1/1) ... [2021-10-28 09:26:18,787 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:26:18,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:26:18,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:26:18,788 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:26:18,796 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:26:18" (1/1) ... [2021-10-28 09:26:18,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:26:18" (1/1) ... [2021-10-28 09:26:18,800 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:26:18" (1/1) ... [2021-10-28 09:26:18,800 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:26:18" (1/1) ... [2021-10-28 09:26:18,807 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:26:18" (1/1) ... [2021-10-28 09:26:18,809 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:26:18" (1/1) ... [2021-10-28 09:26:18,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:26:18" (1/1) ... [2021-10-28 09:26:18,814 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:26:18,815 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:26:18,815 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:26:18,815 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:26:18,820 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:26:18" (1/1) ... [2021-10-28 09:26:18,836 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:26:18,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ac1907-d6be-4b22-b5c6-2adec9ad90c2/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:26:18,869 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ac1907-d6be-4b22-b5c6-2adec9ad90c2/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:26:18,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ac1907-d6be-4b22-b5c6-2adec9ad90c2/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:26:18,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 09:26:18,920 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2021-10-28 09:26:18,920 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2021-10-28 09:26:18,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 09:26:18,921 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-10-28 09:26:18,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:26:18,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:26:18,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:26:18,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:26:18,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:26:18,924 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 09:26:19,301 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:26:19,301 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-28 09:26:19,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:26:19 BoogieIcfgContainer [2021-10-28 09:26:19,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:26:19,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:26:19,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:26:19,309 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:26:19,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:26:18" (1/3) ... [2021-10-28 09:26:19,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13310c96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:26:19, skipping insertion in model container [2021-10-28 09:26:19,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:26:18" (2/3) ... [2021-10-28 09:26:19,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13310c96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:26:19, skipping insertion in model container [2021-10-28 09:26:19,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:26:19" (3/3) ... [2021-10-28 09:26:19,312 INFO L111 eAbstractionObserver]: Analyzing ICFG 13-privatized_29-multiple-protecting2-vesal_true.i [2021-10-28 09:26:19,317 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-28 09:26:19,317 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:26:19,318 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-28 09:26:19,318 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-28 09:26:19,346 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:19,346 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:19,346 WARN L313 ript$VariableManager]: TermVariabe t2_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:19,346 WARN L313 ript$VariableManager]: TermVariabe t2_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:19,347 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:19,347 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:19,347 WARN L313 ript$VariableManager]: TermVariabe t2_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:19,347 WARN L313 ript$VariableManager]: TermVariabe t2_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:19,347 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:19,348 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:19,348 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:19,348 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:19,348 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:19,349 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:19,349 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:19,349 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:19,349 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:19,350 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:19,350 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:19,350 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:19,350 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:19,351 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:19,351 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:19,351 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:19,352 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:19,352 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:19,352 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:19,352 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:19,352 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:19,353 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:19,353 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:19,353 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:19,354 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:19,354 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:19,354 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:19,354 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:19,357 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:19,368 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:19,368 WARN L313 ript$VariableManager]: TermVariabe t2_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:19,368 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:19,369 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:19,372 WARN L313 ript$VariableManager]: TermVariabe t2_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:19,372 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:19,372 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:19,372 WARN L313 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:26:19,385 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-10-28 09:26:19,458 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:26:19,467 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 09:26:19,467 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-28 09:26:19,486 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 99 places, 98 transitions, 204 flow [2021-10-28 09:26:19,570 INFO L129 PetriNetUnfolder]: 3/97 cut-off events. [2021-10-28 09:26:19,570 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-28 09:26:19,574 INFO L84 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 97 events. 3/97 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 71 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2021-10-28 09:26:19,574 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 98 transitions, 204 flow [2021-10-28 09:26:19,583 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 83 transitions, 169 flow [2021-10-28 09:26:19,614 INFO L129 PetriNetUnfolder]: 1/57 cut-off events. [2021-10-28 09:26:19,614 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 09:26:19,615 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:26:19,615 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:26:19,616 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-10-28 09:26:19,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:26:19,625 INFO L85 PathProgramCache]: Analyzing trace with hash -2002689718, now seen corresponding path program 1 times [2021-10-28 09:26:19,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:26:19,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106992301] [2021-10-28 09:26:19,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:26:19,636 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:26:19,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:26:20,052 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 09:26:20,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:26:20,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106992301] [2021-10-28 09:26:20,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106992301] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:26:20,054 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:26:20,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:26:20,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803308718] [2021-10-28 09:26:20,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:26:20,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:26:20,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:26:20,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:26:20,085 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 98 [2021-10-28 09:26:20,097 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 83 transitions, 169 flow. Second operand has 5 states, 5 states have (on average 73.0) internal successors, (365), 5 states have internal predecessors, (365), 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 09:26:20,098 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:26:20,098 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 98 [2021-10-28 09:26:20,099 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:26:20,383 INFO L129 PetriNetUnfolder]: 62/326 cut-off events. [2021-10-28 09:26:20,384 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 09:26:20,386 INFO L84 FinitePrefix]: Finished finitePrefix Result has 478 conditions, 326 events. 62/326 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1484 event pairs, 14 based on Foata normal form. 8/325 useless extension candidates. Maximal degree in co-relation 439. Up to 60 conditions per place. [2021-10-28 09:26:20,390 INFO L132 encePairwiseOnDemand]: 86/98 looper letters, 31 selfloop transitions, 17 changer transitions 0/108 dead transitions. [2021-10-28 09:26:20,390 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 108 transitions, 315 flow [2021-10-28 09:26:20,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:26:20,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 09:26:20,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 701 transitions. [2021-10-28 09:26:20,409 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7947845804988662 [2021-10-28 09:26:20,409 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 701 transitions. [2021-10-28 09:26:20,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 701 transitions. [2021-10-28 09:26:20,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:26:20,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 701 transitions. [2021-10-28 09:26:20,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.88888888888889) internal successors, (701), 9 states have internal predecessors, (701), 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 09:26:20,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 98.0) internal successors, (980), 10 states have internal predecessors, (980), 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 09:26:20,452 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 98.0) internal successors, (980), 10 states have internal predecessors, (980), 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 09:26:20,454 INFO L186 Difference]: Start difference. First operand has 85 places, 83 transitions, 169 flow. Second operand 9 states and 701 transitions. [2021-10-28 09:26:20,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 108 transitions, 315 flow [2021-10-28 09:26:20,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 108 transitions, 314 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-28 09:26:20,470 INFO L242 Difference]: Finished difference. Result has 94 places, 91 transitions, 248 flow [2021-10-28 09:26:20,471 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=248, PETRI_PLACES=94, PETRI_TRANSITIONS=91} [2021-10-28 09:26:20,472 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 9 predicate places. [2021-10-28 09:26:20,472 INFO L470 AbstractCegarLoop]: Abstraction has has 94 places, 91 transitions, 248 flow [2021-10-28 09:26:20,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.0) internal successors, (365), 5 states have internal predecessors, (365), 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 09:26:20,473 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:26:20,473 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] [2021-10-28 09:26:20,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:26:20,474 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-10-28 09:26:20,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:26:20,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1401079428, now seen corresponding path program 1 times [2021-10-28 09:26:20,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:26:20,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546518619] [2021-10-28 09:26:20,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:26:20,475 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:26:20,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:26:20,637 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 09:26:20,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:26:20,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546518619] [2021-10-28 09:26:20,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546518619] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:26:20,638 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:26:20,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:26:20,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537900092] [2021-10-28 09:26:20,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:26:20,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:26:20,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:26:20,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:26:20,647 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 98 [2021-10-28 09:26:20,648 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 91 transitions, 248 flow. Second operand has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 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 09:26:20,648 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:26:20,648 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 98 [2021-10-28 09:26:20,648 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:26:20,837 INFO L129 PetriNetUnfolder]: 68/352 cut-off events. [2021-10-28 09:26:20,837 INFO L130 PetriNetUnfolder]: For 56/56 co-relation queries the response was YES. [2021-10-28 09:26:20,843 INFO L84 FinitePrefix]: Finished finitePrefix Result has 620 conditions, 352 events. 68/352 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1737 event pairs, 20 based on Foata normal form. 5/356 useless extension candidates. Maximal degree in co-relation 576. Up to 72 conditions per place. [2021-10-28 09:26:20,850 INFO L132 encePairwiseOnDemand]: 88/98 looper letters, 31 selfloop transitions, 23 changer transitions 0/114 dead transitions. [2021-10-28 09:26:20,851 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 114 transitions, 424 flow [2021-10-28 09:26:20,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:26:20,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 09:26:20,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 697 transitions. [2021-10-28 09:26:20,857 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7902494331065759 [2021-10-28 09:26:20,857 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 697 transitions. [2021-10-28 09:26:20,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 697 transitions. [2021-10-28 09:26:20,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:26:20,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 697 transitions. [2021-10-28 09:26:20,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.44444444444444) internal successors, (697), 9 states have internal predecessors, (697), 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 09:26:20,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 98.0) internal successors, (980), 10 states have internal predecessors, (980), 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 09:26:20,864 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 98.0) internal successors, (980), 10 states have internal predecessors, (980), 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 09:26:20,864 INFO L186 Difference]: Start difference. First operand has 94 places, 91 transitions, 248 flow. Second operand 9 states and 697 transitions. [2021-10-28 09:26:20,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 114 transitions, 424 flow [2021-10-28 09:26:20,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 114 transitions, 424 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-28 09:26:20,871 INFO L242 Difference]: Finished difference. Result has 105 places, 102 transitions, 368 flow [2021-10-28 09:26:20,871 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=368, PETRI_PLACES=105, PETRI_TRANSITIONS=102} [2021-10-28 09:26:20,872 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 20 predicate places. [2021-10-28 09:26:20,872 INFO L470 AbstractCegarLoop]: Abstraction has has 105 places, 102 transitions, 368 flow [2021-10-28 09:26:20,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 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 09:26:20,873 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:26:20,873 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] [2021-10-28 09:26:20,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:26:20,874 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-10-28 09:26:20,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:26:20,874 INFO L85 PathProgramCache]: Analyzing trace with hash 2070782440, now seen corresponding path program 1 times [2021-10-28 09:26:20,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:26:20,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290096394] [2021-10-28 09:26:20,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:26:20,875 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:26:20,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:26:20,974 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 09:26:20,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:26:20,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290096394] [2021-10-28 09:26:20,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290096394] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:26:20,976 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:26:20,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:26:20,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059560346] [2021-10-28 09:26:20,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:26:20,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:26:20,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:26:20,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:26:20,979 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 98 [2021-10-28 09:26:20,980 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 102 transitions, 368 flow. Second operand has 7 states, 7 states have (on average 71.14285714285714) internal successors, (498), 7 states have internal predecessors, (498), 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 09:26:20,980 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:26:20,981 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 98 [2021-10-28 09:26:20,981 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:26:21,405 INFO L129 PetriNetUnfolder]: 90/455 cut-off events. [2021-10-28 09:26:21,405 INFO L130 PetriNetUnfolder]: For 228/230 co-relation queries the response was YES. [2021-10-28 09:26:21,407 INFO L84 FinitePrefix]: Finished finitePrefix Result has 912 conditions, 455 events. 90/455 cut-off events. For 228/230 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2406 event pairs, 0 based on Foata normal form. 12/464 useless extension candidates. Maximal degree in co-relation 862. Up to 32 conditions per place. [2021-10-28 09:26:21,410 INFO L132 encePairwiseOnDemand]: 81/98 looper letters, 45 selfloop transitions, 60 changer transitions 15/178 dead transitions. [2021-10-28 09:26:21,410 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 178 transitions, 970 flow [2021-10-28 09:26:21,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-28 09:26:21,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-10-28 09:26:21,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1442 transitions. [2021-10-28 09:26:21,416 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7744360902255639 [2021-10-28 09:26:21,417 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1442 transitions. [2021-10-28 09:26:21,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1442 transitions. [2021-10-28 09:26:21,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:26:21,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1442 transitions. [2021-10-28 09:26:21,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 75.89473684210526) internal successors, (1442), 19 states have internal predecessors, (1442), 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 09:26:21,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 98.0) internal successors, (1960), 20 states have internal predecessors, (1960), 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 09:26:21,432 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 98.0) internal successors, (1960), 20 states have internal predecessors, (1960), 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 09:26:21,433 INFO L186 Difference]: Start difference. First operand has 105 places, 102 transitions, 368 flow. Second operand 19 states and 1442 transitions. [2021-10-28 09:26:21,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 178 transitions, 970 flow [2021-10-28 09:26:21,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 178 transitions, 966 flow, removed 2 selfloop flow, removed 0 redundant places. [2021-10-28 09:26:21,452 INFO L242 Difference]: Finished difference. Result has 134 places, 136 transitions, 764 flow [2021-10-28 09:26:21,453 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=764, PETRI_PLACES=134, PETRI_TRANSITIONS=136} [2021-10-28 09:26:21,454 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 49 predicate places. [2021-10-28 09:26:21,454 INFO L470 AbstractCegarLoop]: Abstraction has has 134 places, 136 transitions, 764 flow [2021-10-28 09:26:21,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.14285714285714) internal successors, (498), 7 states have internal predecessors, (498), 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 09:26:21,455 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:26:21,455 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:26:21,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 09:26:21,456 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-10-28 09:26:21,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:26:21,456 INFO L85 PathProgramCache]: Analyzing trace with hash -405013734, now seen corresponding path program 1 times [2021-10-28 09:26:21,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:26:21,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430939621] [2021-10-28 09:26:21,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:26:21,458 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:26:21,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:26:21,617 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 09:26:21,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:26:21,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430939621] [2021-10-28 09:26:21,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430939621] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:26:21,619 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:26:21,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:26:21,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628806006] [2021-10-28 09:26:21,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:26:21,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:26:21,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:26:21,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:26:21,632 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 98 [2021-10-28 09:26:21,635 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 136 transitions, 764 flow. Second operand has 7 states, 7 states have (on average 71.71428571428571) internal successors, (502), 7 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:26:21,635 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:26:21,635 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 98 [2021-10-28 09:26:21,635 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:26:21,916 INFO L129 PetriNetUnfolder]: 76/393 cut-off events. [2021-10-28 09:26:21,917 INFO L130 PetriNetUnfolder]: For 529/532 co-relation queries the response was YES. [2021-10-28 09:26:21,919 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1049 conditions, 393 events. 76/393 cut-off events. For 529/532 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1951 event pairs, 3 based on Foata normal form. 7/398 useless extension candidates. Maximal degree in co-relation 986. Up to 32 conditions per place. [2021-10-28 09:26:21,924 INFO L132 encePairwiseOnDemand]: 83/98 looper letters, 49 selfloop transitions, 72 changer transitions 0/179 dead transitions. [2021-10-28 09:26:21,924 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 179 transitions, 1247 flow [2021-10-28 09:26:21,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-28 09:26:21,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-10-28 09:26:21,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1423 transitions. [2021-10-28 09:26:21,930 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7642320085929108 [2021-10-28 09:26:21,930 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1423 transitions. [2021-10-28 09:26:21,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1423 transitions. [2021-10-28 09:26:21,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:26:21,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1423 transitions. [2021-10-28 09:26:21,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 74.89473684210526) internal successors, (1423), 19 states have internal predecessors, (1423), 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 09:26:21,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 98.0) internal successors, (1960), 20 states have internal predecessors, (1960), 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 09:26:21,945 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 98.0) internal successors, (1960), 20 states have internal predecessors, (1960), 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 09:26:21,945 INFO L186 Difference]: Start difference. First operand has 134 places, 136 transitions, 764 flow. Second operand 19 states and 1423 transitions. [2021-10-28 09:26:21,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 179 transitions, 1247 flow [2021-10-28 09:26:21,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 179 transitions, 1092 flow, removed 35 selfloop flow, removed 10 redundant places. [2021-10-28 09:26:21,961 INFO L242 Difference]: Finished difference. Result has 146 places, 158 transitions, 983 flow [2021-10-28 09:26:21,962 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=660, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=983, PETRI_PLACES=146, PETRI_TRANSITIONS=158} [2021-10-28 09:26:21,962 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 61 predicate places. [2021-10-28 09:26:21,962 INFO L470 AbstractCegarLoop]: Abstraction has has 146 places, 158 transitions, 983 flow [2021-10-28 09:26:21,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.71428571428571) internal successors, (502), 7 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:26:21,963 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:26:21,963 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:26:21,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 09:26:21,964 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-10-28 09:26:21,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:26:21,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1125988677, now seen corresponding path program 1 times [2021-10-28 09:26:21,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:26:21,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586852662] [2021-10-28 09:26:21,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:26:21,967 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:26:21,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:26:22,129 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 09:26:22,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:26:22,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586852662] [2021-10-28 09:26:22,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586852662] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:26:22,131 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:26:22,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-28 09:26:22,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064188001] [2021-10-28 09:26:22,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:26:22,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:26:22,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:26:22,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:26:22,135 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 98 [2021-10-28 09:26:22,137 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 158 transitions, 983 flow. Second operand has 9 states, 9 states have (on average 70.22222222222223) internal successors, (632), 9 states have internal predecessors, (632), 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 09:26:22,137 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:26:22,137 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 98 [2021-10-28 09:26:22,137 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:26:22,595 INFO L129 PetriNetUnfolder]: 105/461 cut-off events. [2021-10-28 09:26:22,595 INFO L130 PetriNetUnfolder]: For 812/817 co-relation queries the response was YES. [2021-10-28 09:26:22,597 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1302 conditions, 461 events. 105/461 cut-off events. For 812/817 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2362 event pairs, 0 based on Foata normal form. 7/465 useless extension candidates. Maximal degree in co-relation 1241. Up to 32 conditions per place. [2021-10-28 09:26:22,601 INFO L132 encePairwiseOnDemand]: 82/98 looper letters, 57 selfloop transitions, 110 changer transitions 0/223 dead transitions. [2021-10-28 09:26:22,601 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 223 transitions, 1770 flow [2021-10-28 09:26:22,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-28 09:26:22,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-10-28 09:26:22,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2056 transitions. [2021-10-28 09:26:22,610 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.749271137026239 [2021-10-28 09:26:22,610 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2056 transitions. [2021-10-28 09:26:22,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2056 transitions. [2021-10-28 09:26:22,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:26:22,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2056 transitions. [2021-10-28 09:26:22,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 73.42857142857143) internal successors, (2056), 28 states have internal predecessors, (2056), 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 09:26:22,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 98.0) internal successors, (2842), 29 states have internal predecessors, (2842), 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 09:26:22,631 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 98.0) internal successors, (2842), 29 states have internal predecessors, (2842), 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 09:26:22,631 INFO L186 Difference]: Start difference. First operand has 146 places, 158 transitions, 983 flow. Second operand 28 states and 2056 transitions. [2021-10-28 09:26:22,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 223 transitions, 1770 flow [2021-10-28 09:26:22,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 223 transitions, 1651 flow, removed 10 selfloop flow, removed 11 redundant places. [2021-10-28 09:26:22,652 INFO L242 Difference]: Finished difference. Result has 160 places, 188 transitions, 1353 flow [2021-10-28 09:26:22,653 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=877, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1353, PETRI_PLACES=160, PETRI_TRANSITIONS=188} [2021-10-28 09:26:22,653 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 75 predicate places. [2021-10-28 09:26:22,653 INFO L470 AbstractCegarLoop]: Abstraction has has 160 places, 188 transitions, 1353 flow [2021-10-28 09:26:22,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 70.22222222222223) internal successors, (632), 9 states have internal predecessors, (632), 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 09:26:22,654 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:26:22,655 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:26:22,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 09:26:22,656 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-10-28 09:26:22,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:26:22,656 INFO L85 PathProgramCache]: Analyzing trace with hash 464939713, now seen corresponding path program 1 times [2021-10-28 09:26:22,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:26:22,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128474333] [2021-10-28 09:26:22,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:26:22,657 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:26:22,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:26:22,812 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 09:26:22,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:26:22,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128474333] [2021-10-28 09:26:22,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128474333] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:26:22,813 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:26:22,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-28 09:26:22,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331271253] [2021-10-28 09:26:22,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:26:22,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:26:22,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:26:22,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:26:22,824 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 98 [2021-10-28 09:26:22,825 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 188 transitions, 1353 flow. Second operand has 9 states, 9 states have (on average 70.66666666666667) internal successors, (636), 9 states have internal predecessors, (636), 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 09:26:22,825 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:26:22,825 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 98 [2021-10-28 09:26:22,826 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:26:23,278 INFO L129 PetriNetUnfolder]: 104/426 cut-off events. [2021-10-28 09:26:23,278 INFO L130 PetriNetUnfolder]: For 718/730 co-relation queries the response was YES. [2021-10-28 09:26:23,280 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1361 conditions, 426 events. 104/426 cut-off events. For 718/730 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2032 event pairs, 0 based on Foata normal form. 12/436 useless extension candidates. Maximal degree in co-relation 1304. Up to 30 conditions per place. [2021-10-28 09:26:23,283 INFO L132 encePairwiseOnDemand]: 82/98 looper letters, 63 selfloop transitions, 119 changer transitions 0/237 dead transitions. [2021-10-28 09:26:23,284 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 237 transitions, 1933 flow [2021-10-28 09:26:23,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-28 09:26:23,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-10-28 09:26:23,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2054 transitions. [2021-10-28 09:26:23,296 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7485422740524781 [2021-10-28 09:26:23,296 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2054 transitions. [2021-10-28 09:26:23,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2054 transitions. [2021-10-28 09:26:23,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:26:23,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2054 transitions. [2021-10-28 09:26:23,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 73.35714285714286) internal successors, (2054), 28 states have internal predecessors, (2054), 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 09:26:23,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 98.0) internal successors, (2842), 29 states have internal predecessors, (2842), 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 09:26:23,320 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 98.0) internal successors, (2842), 29 states have internal predecessors, (2842), 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 09:26:23,320 INFO L186 Difference]: Start difference. First operand has 160 places, 188 transitions, 1353 flow. Second operand 28 states and 2054 transitions. [2021-10-28 09:26:23,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 237 transitions, 1933 flow [2021-10-28 09:26:23,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 237 transitions, 1674 flow, removed 2 selfloop flow, removed 22 redundant places. [2021-10-28 09:26:23,341 INFO L242 Difference]: Finished difference. Result has 163 places, 207 transitions, 1440 flow [2021-10-28 09:26:23,342 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=1097, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1440, PETRI_PLACES=163, PETRI_TRANSITIONS=207} [2021-10-28 09:26:23,342 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 78 predicate places. [2021-10-28 09:26:23,343 INFO L470 AbstractCegarLoop]: Abstraction has has 163 places, 207 transitions, 1440 flow [2021-10-28 09:26:23,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 70.66666666666667) internal successors, (636), 9 states have internal predecessors, (636), 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 09:26:23,343 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:26:23,344 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:26:23,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 09:26:23,344 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-10-28 09:26:23,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:26:23,345 INFO L85 PathProgramCache]: Analyzing trace with hash -510741563, now seen corresponding path program 1 times [2021-10-28 09:26:23,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:26:23,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618378676] [2021-10-28 09:26:23,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:26:23,346 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:26:23,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:26:23,477 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 09:26:23,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:26:23,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618378676] [2021-10-28 09:26:23,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618378676] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:26:23,478 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:26:23,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:26:23,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255717559] [2021-10-28 09:26:23,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:26:23,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:26:23,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:26:23,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:26:23,486 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 98 [2021-10-28 09:26:23,486 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 207 transitions, 1440 flow. Second operand has 6 states, 6 states have (on average 69.16666666666667) internal successors, (415), 6 states have internal predecessors, (415), 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 09:26:23,487 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:26:23,487 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 98 [2021-10-28 09:26:23,487 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:26:23,614 INFO L129 PetriNetUnfolder]: 26/262 cut-off events. [2021-10-28 09:26:23,614 INFO L130 PetriNetUnfolder]: For 232/232 co-relation queries the response was YES. [2021-10-28 09:26:23,615 INFO L84 FinitePrefix]: Finished finitePrefix Result has 605 conditions, 262 events. 26/262 cut-off events. For 232/232 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 922 event pairs, 13 based on Foata normal form. 10/271 useless extension candidates. Maximal degree in co-relation 543. Up to 53 conditions per place. [2021-10-28 09:26:23,616 INFO L132 encePairwiseOnDemand]: 88/98 looper letters, 18 selfloop transitions, 10 changer transitions 0/108 dead transitions. [2021-10-28 09:26:23,617 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 108 transitions, 558 flow [2021-10-28 09:26:23,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:26:23,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-28 09:26:23,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 362 transitions. [2021-10-28 09:26:23,618 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7387755102040816 [2021-10-28 09:26:23,619 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 362 transitions. [2021-10-28 09:26:23,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 362 transitions. [2021-10-28 09:26:23,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:26:23,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 362 transitions. [2021-10-28 09:26:23,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 72.4) internal successors, (362), 5 states have internal predecessors, (362), 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 09:26:23,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 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 09:26:23,624 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 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 09:26:23,624 INFO L186 Difference]: Start difference. First operand has 163 places, 207 transitions, 1440 flow. Second operand 5 states and 362 transitions. [2021-10-28 09:26:23,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 108 transitions, 558 flow [2021-10-28 09:26:23,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 108 transitions, 430 flow, removed 5 selfloop flow, removed 28 redundant places. [2021-10-28 09:26:23,634 INFO L242 Difference]: Finished difference. Result has 121 places, 105 transitions, 400 flow [2021-10-28 09:26:23,634 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=400, PETRI_PLACES=121, PETRI_TRANSITIONS=105} [2021-10-28 09:26:23,635 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 36 predicate places. [2021-10-28 09:26:23,635 INFO L470 AbstractCegarLoop]: Abstraction has has 121 places, 105 transitions, 400 flow [2021-10-28 09:26:23,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.16666666666667) internal successors, (415), 6 states have internal predecessors, (415), 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 09:26:23,635 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:26:23,636 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:26:23,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 09:26:23,636 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-10-28 09:26:23,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:26:23,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1431711488, now seen corresponding path program 1 times [2021-10-28 09:26:23,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:26:23,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064179582] [2021-10-28 09:26:23,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:26:23,638 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:26:23,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:26:23,757 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 09:26:23,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:26:23,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064179582] [2021-10-28 09:26:23,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064179582] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:26:23,758 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:26:23,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:26:23,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594432740] [2021-10-28 09:26:23,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:26:23,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:26:23,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:26:23,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:26:23,762 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 98 [2021-10-28 09:26:23,763 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 105 transitions, 400 flow. Second operand has 6 states, 6 states have (on average 64.16666666666667) internal successors, (385), 6 states have internal predecessors, (385), 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 09:26:23,763 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:26:23,763 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 98 [2021-10-28 09:26:23,764 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:26:23,854 INFO L129 PetriNetUnfolder]: 12/185 cut-off events. [2021-10-28 09:26:23,855 INFO L130 PetriNetUnfolder]: For 121/123 co-relation queries the response was YES. [2021-10-28 09:26:23,855 INFO L84 FinitePrefix]: Finished finitePrefix Result has 410 conditions, 185 events. 12/185 cut-off events. For 121/123 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 468 event pairs, 4 based on Foata normal form. 13/197 useless extension candidates. Maximal degree in co-relation 345. Up to 37 conditions per place. [2021-10-28 09:26:23,856 INFO L132 encePairwiseOnDemand]: 93/98 looper letters, 27 selfloop transitions, 6 changer transitions 0/105 dead transitions. [2021-10-28 09:26:23,856 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 105 transitions, 455 flow [2021-10-28 09:26:23,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:26:23,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-28 09:26:23,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 333 transitions. [2021-10-28 09:26:23,858 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6795918367346939 [2021-10-28 09:26:23,858 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 333 transitions. [2021-10-28 09:26:23,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 333 transitions. [2021-10-28 09:26:23,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:26:23,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 333 transitions. [2021-10-28 09:26:23,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 66.6) internal successors, (333), 5 states have internal predecessors, (333), 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 09:26:23,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 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 09:26:23,862 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 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 09:26:23,862 INFO L186 Difference]: Start difference. First operand has 121 places, 105 transitions, 400 flow. Second operand 5 states and 333 transitions. [2021-10-28 09:26:23,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 105 transitions, 455 flow [2021-10-28 09:26:23,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 105 transitions, 420 flow, removed 0 selfloop flow, removed 7 redundant places. [2021-10-28 09:26:23,867 INFO L242 Difference]: Finished difference. Result has 118 places, 102 transitions, 354 flow [2021-10-28 09:26:23,867 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=354, PETRI_PLACES=118, PETRI_TRANSITIONS=102} [2021-10-28 09:26:23,867 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 33 predicate places. [2021-10-28 09:26:23,868 INFO L470 AbstractCegarLoop]: Abstraction has has 118 places, 102 transitions, 354 flow [2021-10-28 09:26:23,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 64.16666666666667) internal successors, (385), 6 states have internal predecessors, (385), 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 09:26:23,868 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:26:23,868 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:26:23,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 09:26:23,869 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-10-28 09:26:23,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:26:23,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1396019229, now seen corresponding path program 1 times [2021-10-28 09:26:23,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:26:23,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417290823] [2021-10-28 09:26:23,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:26:23,870 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:26:23,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:26:24,014 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 09:26:24,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:26:24,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417290823] [2021-10-28 09:26:24,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417290823] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:26:24,015 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:26:24,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:26:24,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915518127] [2021-10-28 09:26:24,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:26:24,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:26:24,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:26:24,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:26:24,018 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 98 [2021-10-28 09:26:24,019 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 102 transitions, 354 flow. Second operand has 8 states, 8 states have (on average 71.5) internal successors, (572), 8 states have internal predecessors, (572), 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 09:26:24,020 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:26:24,020 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 98 [2021-10-28 09:26:24,020 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:26:24,200 INFO L129 PetriNetUnfolder]: 4/151 cut-off events. [2021-10-28 09:26:24,200 INFO L130 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2021-10-28 09:26:24,200 INFO L84 FinitePrefix]: Finished finitePrefix Result has 330 conditions, 151 events. 4/151 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 316 event pairs, 1 based on Foata normal form. 1/152 useless extension candidates. Maximal degree in co-relation 283. Up to 21 conditions per place. [2021-10-28 09:26:24,201 INFO L132 encePairwiseOnDemand]: 84/98 looper letters, 0 selfloop transitions, 0 changer transitions 101/101 dead transitions. [2021-10-28 09:26:24,201 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 101 transitions, 442 flow [2021-10-28 09:26:24,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-28 09:26:24,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-28 09:26:24,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1138 transitions. [2021-10-28 09:26:24,205 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7257653061224489 [2021-10-28 09:26:24,205 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1138 transitions. [2021-10-28 09:26:24,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1138 transitions. [2021-10-28 09:26:24,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:26:24,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1138 transitions. [2021-10-28 09:26:24,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 71.125) internal successors, (1138), 16 states have internal predecessors, (1138), 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 09:26:24,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 98.0) internal successors, (1666), 17 states have internal predecessors, (1666), 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 09:26:24,216 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 98.0) internal successors, (1666), 17 states have internal predecessors, (1666), 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 09:26:24,216 INFO L186 Difference]: Start difference. First operand has 118 places, 102 transitions, 354 flow. Second operand 16 states and 1138 transitions. [2021-10-28 09:26:24,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 101 transitions, 442 flow [2021-10-28 09:26:24,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 101 transitions, 435 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-28 09:26:24,220 INFO L242 Difference]: Finished difference. Result has 128 places, 0 transitions, 0 flow [2021-10-28 09:26:24,220 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=0, PETRI_PLACES=128, PETRI_TRANSITIONS=0} [2021-10-28 09:26:24,221 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 43 predicate places. [2021-10-28 09:26:24,221 INFO L470 AbstractCegarLoop]: Abstraction has has 128 places, 0 transitions, 0 flow [2021-10-28 09:26:24,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 71.5) internal successors, (572), 8 states have internal predecessors, (572), 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 09:26:24,225 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:26:24,225 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:26:24,226 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:26:24,226 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-28 09:26:24,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 09:26:24,230 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:26:24,234 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-28 09:26:24,234 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:26:24,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:26:24 BasicIcfg [2021-10-28 09:26:24,238 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:26:24,238 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:26:24,239 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:26:24,239 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:26:24,239 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:26:19" (3/4) ... [2021-10-28 09:26:24,242 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 09:26:24,249 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t2_fun [2021-10-28 09:26:24,255 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-10-28 09:26:24,256 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 09:26:24,256 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:26:24,256 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:26:24,306 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ac1907-d6be-4b22-b5c6-2adec9ad90c2/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:26:24,307 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:26:24,308 INFO L168 Benchmark]: Toolchain (without parser) took 6056.50 ms. Allocated memory was 111.1 MB in the beginning and 161.5 MB in the end (delta: 50.3 MB). Free memory was 76.9 MB in the beginning and 106.8 MB in the end (delta: -30.0 MB). Peak memory consumption was 22.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:26:24,308 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 111.1 MB. Free memory is still 65.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:26:24,309 INFO L168 Benchmark]: CACSL2BoogieTranslator took 486.59 ms. Allocated memory is still 111.1 MB. Free memory was 76.9 MB in the beginning and 74.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:26:24,309 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.24 ms. Allocated memory is still 111.1 MB. Free memory was 74.2 MB in the beginning and 72.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:26:24,310 INFO L168 Benchmark]: Boogie Preprocessor took 26.66 ms. Allocated memory is still 111.1 MB. Free memory was 72.4 MB in the beginning and 71.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:26:24,310 INFO L168 Benchmark]: RCFGBuilder took 488.13 ms. Allocated memory is still 111.1 MB. Free memory was 70.7 MB in the beginning and 58.0 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 09:26:24,310 INFO L168 Benchmark]: TraceAbstraction took 4932.79 ms. Allocated memory was 111.1 MB in the beginning and 161.5 MB in the end (delta: 50.3 MB). Free memory was 57.3 MB in the beginning and 110.0 MB in the end (delta: -52.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:26:24,311 INFO L168 Benchmark]: Witness Printer took 68.24 ms. Allocated memory is still 161.5 MB. Free memory was 110.0 MB in the beginning and 106.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:26:24,313 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 111.1 MB. Free memory is still 65.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 486.59 ms. Allocated memory is still 111.1 MB. Free memory was 76.9 MB in the beginning and 74.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.24 ms. Allocated memory is still 111.1 MB. Free memory was 74.2 MB in the beginning and 72.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.66 ms. Allocated memory is still 111.1 MB. Free memory was 72.4 MB in the beginning and 71.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 488.13 ms. Allocated memory is still 111.1 MB. Free memory was 70.7 MB in the beginning and 58.0 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4932.79 ms. Allocated memory was 111.1 MB in the beginning and 161.5 MB in the end (delta: 50.3 MB). Free memory was 57.3 MB in the beginning and 110.0 MB in the end (delta: -52.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 68.24 ms. Allocated memory is still 161.5 MB. Free memory was 110.0 MB in the beginning and 106.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s 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: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: 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 3 procedures, 116 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.7s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 162 SDtfs, 586 SDslu, 438 SDs, 0 SdLazy, 934 SolverSat, 206 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 162 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1440occurred in iteration=6, InterpolantAutomatonStates: 138, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 519 NumberOfCodeBlocks, 519 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 510 ConstructedInterpolants, 0 QuantifiedInterpolants, 1943 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-28 09:26:24,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ac1907-d6be-4b22-b5c6-2adec9ad90c2/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...