./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/04-mutex_10-ptrmunge_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7c2b187-e844-4582-bdf2-44af1456a639/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7c2b187-e844-4582-bdf2-44af1456a639/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7c2b187-e844-4582-bdf2-44af1456a639/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7c2b187-e844-4582-bdf2-44af1456a639/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/04-mutex_10-ptrmunge_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7c2b187-e844-4582-bdf2-44af1456a639/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7c2b187-e844-4582-bdf2-44af1456a639/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b7b2dab104eee1bd1f440bec4a0db415f1c26fa4fc41062d03a3a4935f69226f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:25:13,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:25:13,002 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:25:13,032 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:25:13,033 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:25:13,034 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:25:13,036 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:25:13,038 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:25:13,040 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:25:13,042 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:25:13,043 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:25:13,045 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:25:13,045 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:25:13,047 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:25:13,048 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:25:13,050 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:25:13,051 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:25:13,052 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:25:13,054 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:25:13,057 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:25:13,059 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:25:13,060 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:25:13,062 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:25:13,063 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:25:13,067 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:25:13,067 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:25:13,068 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:25:13,069 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:25:13,070 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:25:13,071 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:25:13,071 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:25:13,072 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:25:13,073 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:25:13,075 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:25:13,076 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:25:13,076 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:25:13,077 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:25:13,078 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:25:13,078 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:25:13,079 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:25:13,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:25:13,081 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7c2b187-e844-4582-bdf2-44af1456a639/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 12:25:13,105 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:25:13,105 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:25:13,105 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:25:13,106 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:25:13,107 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:25:13,107 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:25:13,108 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:25:13,108 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:25:13,108 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:25:13,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:25:13,109 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:25:13,109 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:25:13,109 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:25:13,109 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:25:13,110 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:25:13,110 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:25:13,110 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:25:13,110 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:25:13,111 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 12:25:13,111 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:25:13,111 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:25:13,111 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:25:13,111 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:25:13,112 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:25:13,112 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:25:13,112 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:25:13,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:25:13,113 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:25:13,113 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:25:13,113 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:25:13,113 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:25:13,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:25:13,114 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:25:13,114 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:25:13,114 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:25:13,115 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_b7c2b187-e844-4582-bdf2-44af1456a639/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7c2b187-e844-4582-bdf2-44af1456a639/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7b2dab104eee1bd1f440bec4a0db415f1c26fa4fc41062d03a3a4935f69226f [2022-11-20 12:25:13,459 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:25:13,499 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:25:13,502 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:25:13,504 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:25:13,504 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:25:13,506 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7c2b187-e844-4582-bdf2-44af1456a639/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/goblint-regression/04-mutex_10-ptrmunge_nr.i [2022-11-20 12:25:16,687 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:25:17,082 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:25:17,083 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7c2b187-e844-4582-bdf2-44af1456a639/sv-benchmarks/c/goblint-regression/04-mutex_10-ptrmunge_nr.i [2022-11-20 12:25:17,099 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7c2b187-e844-4582-bdf2-44af1456a639/bin/uautomizer-ug76WZFUDN/data/b42b18e02/8639b461a0c34a9bb47480c7db8f19db/FLAG0c5ea34b0 [2022-11-20 12:25:17,116 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7c2b187-e844-4582-bdf2-44af1456a639/bin/uautomizer-ug76WZFUDN/data/b42b18e02/8639b461a0c34a9bb47480c7db8f19db [2022-11-20 12:25:17,119 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:25:17,121 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:25:17,123 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:25:17,123 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:25:17,128 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:25:17,129 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:25:17" (1/1) ... [2022-11-20 12:25:17,130 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@788f920b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:25:17, skipping insertion in model container [2022-11-20 12:25:17,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:25:17" (1/1) ... [2022-11-20 12:25:17,139 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:25:17,186 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:25:17,787 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:25:17,805 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:25:17,872 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:25:17,944 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:25:17,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:25:17 WrapperNode [2022-11-20 12:25:17,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:25:17,947 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:25:17,947 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:25:17,947 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:25:17,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:25:17" (1/1) ... [2022-11-20 12:25:17,984 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:25:17" (1/1) ... [2022-11-20 12:25:18,016 INFO L138 Inliner]: procedures = 263, calls = 29, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2022-11-20 12:25:18,017 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:25:18,018 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:25:18,018 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:25:18,018 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:25:18,027 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:25:17" (1/1) ... [2022-11-20 12:25:18,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:25:17" (1/1) ... [2022-11-20 12:25:18,031 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:25:17" (1/1) ... [2022-11-20 12:25:18,031 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:25:17" (1/1) ... [2022-11-20 12:25:18,037 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:25:17" (1/1) ... [2022-11-20 12:25:18,039 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:25:17" (1/1) ... [2022-11-20 12:25:18,040 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:25:17" (1/1) ... [2022-11-20 12:25:18,042 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:25:17" (1/1) ... [2022-11-20 12:25:18,044 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:25:18,045 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:25:18,046 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:25:18,046 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:25:18,047 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:25:17" (1/1) ... [2022-11-20 12:25:18,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:25:18,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7c2b187-e844-4582-bdf2-44af1456a639/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:25:18,105 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7c2b187-e844-4582-bdf2-44af1456a639/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:25:18,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7c2b187-e844-4582-bdf2-44af1456a639/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:25:18,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:25:18,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:25:18,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:25:18,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:25:18,154 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 12:25:18,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:25:18,155 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-20 12:25:18,155 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-20 12:25:18,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:25:18,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:25:18,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:25:18,158 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 12:25:18,365 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:25:18,367 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:25:18,601 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:25:18,609 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:25:18,614 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 12:25:18,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:25:18 BoogieIcfgContainer [2022-11-20 12:25:18,617 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:25:18,620 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:25:18,621 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:25:18,625 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:25:18,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:25:17" (1/3) ... [2022-11-20 12:25:18,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@536a6be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:25:18, skipping insertion in model container [2022-11-20 12:25:18,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:25:17" (2/3) ... [2022-11-20 12:25:18,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@536a6be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:25:18, skipping insertion in model container [2022-11-20 12:25:18,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:25:18" (3/3) ... [2022-11-20 12:25:18,635 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_10-ptrmunge_nr.i [2022-11-20 12:25:18,645 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 12:25:18,658 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:25:18,658 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-20 12:25:18,658 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:25:18,732 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-20 12:25:18,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 80 transitions, 168 flow [2022-11-20 12:25:18,844 INFO L130 PetriNetUnfolder]: 0/79 cut-off events. [2022-11-20 12:25:18,845 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 12:25:18,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 79 events. 0/79 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 46 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2022-11-20 12:25:18,849 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 80 transitions, 168 flow [2022-11-20 12:25:18,855 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 71 transitions, 145 flow [2022-11-20 12:25:18,866 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:25:18,874 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@17b9b41f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:25:18,875 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-20 12:25:18,893 INFO L130 PetriNetUnfolder]: 0/51 cut-off events. [2022-11-20 12:25:18,894 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:25:18,894 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:25:18,895 INFO L209 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] [2022-11-20 12:25:18,895 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:25:18,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:25:18,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1761973742, now seen corresponding path program 1 times [2022-11-20 12:25:18,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:25:18,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226012015] [2022-11-20 12:25:18,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:25:18,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:25:19,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:19,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:25:19,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:25:19,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226012015] [2022-11-20 12:25:19,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226012015] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:25:19,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:25:19,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 12:25:19,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347536939] [2022-11-20 12:25:19,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:25:19,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:25:19,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:25:19,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:25:19,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:25:19,872 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 80 [2022-11-20 12:25:19,876 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 71 transitions, 145 flow. Second operand has 10 states, 10 states have (on average 48.3) internal successors, (483), 10 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:19,876 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:25:19,877 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 80 [2022-11-20 12:25:19,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:25:20,341 INFO L130 PetriNetUnfolder]: 30/173 cut-off events. [2022-11-20 12:25:20,343 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:25:20,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 173 events. 30/173 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 631 event pairs, 7 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 217. Up to 42 conditions per place. [2022-11-20 12:25:20,349 INFO L137 encePairwiseOnDemand]: 68/80 looper letters, 31 selfloop transitions, 12 changer transitions 10/93 dead transitions. [2022-11-20 12:25:20,349 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 93 transitions, 295 flow [2022-11-20 12:25:20,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:25:20,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 12:25:20,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 517 transitions. [2022-11-20 12:25:20,378 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.64625 [2022-11-20 12:25:20,378 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 517 transitions. [2022-11-20 12:25:20,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 517 transitions. [2022-11-20 12:25:20,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:25:20,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 517 transitions. [2022-11-20 12:25:20,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 51.7) internal successors, (517), 10 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:20,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 80.0) internal successors, (880), 11 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:20,403 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 80.0) internal successors, (880), 11 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:20,405 INFO L175 Difference]: Start difference. First operand has 75 places, 71 transitions, 145 flow. Second operand 10 states and 517 transitions. [2022-11-20 12:25:20,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 93 transitions, 295 flow [2022-11-20 12:25:20,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 93 transitions, 294 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:25:20,419 INFO L231 Difference]: Finished difference. Result has 88 places, 76 transitions, 205 flow [2022-11-20 12:25:20,422 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=205, PETRI_PLACES=88, PETRI_TRANSITIONS=76} [2022-11-20 12:25:20,428 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, 13 predicate places. [2022-11-20 12:25:20,428 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 76 transitions, 205 flow [2022-11-20 12:25:20,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 48.3) internal successors, (483), 10 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:20,430 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:25:20,430 INFO L209 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] [2022-11-20 12:25:20,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:25:20,432 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:25:20,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:25:20,435 INFO L85 PathProgramCache]: Analyzing trace with hash 831420745, now seen corresponding path program 1 times [2022-11-20 12:25:20,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:25:20,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499051843] [2022-11-20 12:25:20,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:25:20,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:25:20,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:20,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:25:20,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:25:20,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499051843] [2022-11-20 12:25:20,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499051843] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:25:20,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:25:20,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 12:25:20,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844156278] [2022-11-20 12:25:20,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:25:20,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:25:20,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:25:20,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:25:20,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:25:20,970 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 80 [2022-11-20 12:25:20,971 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 76 transitions, 205 flow. Second operand has 10 states, 10 states have (on average 44.7) internal successors, (447), 10 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:20,972 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:25:20,972 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 80 [2022-11-20 12:25:20,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:25:21,291 INFO L130 PetriNetUnfolder]: 15/153 cut-off events. [2022-11-20 12:25:21,292 INFO L131 PetriNetUnfolder]: For 49/52 co-relation queries the response was YES. [2022-11-20 12:25:21,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300 conditions, 153 events. 15/153 cut-off events. For 49/52 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 527 event pairs, 1 based on Foata normal form. 3/152 useless extension candidates. Maximal degree in co-relation 231. Up to 23 conditions per place. [2022-11-20 12:25:21,301 INFO L137 encePairwiseOnDemand]: 68/80 looper letters, 34 selfloop transitions, 14 changer transitions 5/91 dead transitions. [2022-11-20 12:25:21,301 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 91 transitions, 367 flow [2022-11-20 12:25:21,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:25:21,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 12:25:21,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 475 transitions. [2022-11-20 12:25:21,304 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.59375 [2022-11-20 12:25:21,304 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 475 transitions. [2022-11-20 12:25:21,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 475 transitions. [2022-11-20 12:25:21,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:25:21,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 475 transitions. [2022-11-20 12:25:21,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 47.5) internal successors, (475), 10 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:21,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 80.0) internal successors, (880), 11 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:21,309 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 80.0) internal successors, (880), 11 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:21,309 INFO L175 Difference]: Start difference. First operand has 88 places, 76 transitions, 205 flow. Second operand 10 states and 475 transitions. [2022-11-20 12:25:21,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 91 transitions, 367 flow [2022-11-20 12:25:21,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 91 transitions, 342 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-11-20 12:25:21,315 INFO L231 Difference]: Finished difference. Result has 96 places, 81 transitions, 259 flow [2022-11-20 12:25:21,316 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=259, PETRI_PLACES=96, PETRI_TRANSITIONS=81} [2022-11-20 12:25:21,316 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, 21 predicate places. [2022-11-20 12:25:21,317 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 81 transitions, 259 flow [2022-11-20 12:25:21,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 44.7) internal successors, (447), 10 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:21,317 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:25:21,318 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:25:21,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:25:21,318 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:25:21,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:25:21,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1309010650, now seen corresponding path program 1 times [2022-11-20 12:25:21,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:25:21,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877320660] [2022-11-20 12:25:21,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:25:21,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:25:21,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:21,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:25:21,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:25:21,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877320660] [2022-11-20 12:25:21,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877320660] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:25:21,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:25:21,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 12:25:21,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180997735] [2022-11-20 12:25:21,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:25:21,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 12:25:21,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:25:21,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 12:25:21,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:25:21,977 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 80 [2022-11-20 12:25:21,978 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 81 transitions, 259 flow. Second operand has 14 states, 14 states have (on average 40.357142857142854) internal successors, (565), 14 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:21,978 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:25:21,978 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 80 [2022-11-20 12:25:21,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:25:22,715 INFO L130 PetriNetUnfolder]: 46/255 cut-off events. [2022-11-20 12:25:22,715 INFO L131 PetriNetUnfolder]: For 191/193 co-relation queries the response was YES. [2022-11-20 12:25:22,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 586 conditions, 255 events. 46/255 cut-off events. For 191/193 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1190 event pairs, 3 based on Foata normal form. 4/259 useless extension candidates. Maximal degree in co-relation 511. Up to 35 conditions per place. [2022-11-20 12:25:22,722 INFO L137 encePairwiseOnDemand]: 66/80 looper letters, 53 selfloop transitions, 15 changer transitions 9/109 dead transitions. [2022-11-20 12:25:22,722 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 109 transitions, 538 flow [2022-11-20 12:25:22,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 12:25:22,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 12:25:22,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 566 transitions. [2022-11-20 12:25:22,726 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5442307692307692 [2022-11-20 12:25:22,726 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 566 transitions. [2022-11-20 12:25:22,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 566 transitions. [2022-11-20 12:25:22,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:25:22,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 566 transitions. [2022-11-20 12:25:22,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 43.53846153846154) internal successors, (566), 13 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:22,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 80.0) internal successors, (1120), 14 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:22,734 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 80.0) internal successors, (1120), 14 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:22,734 INFO L175 Difference]: Start difference. First operand has 96 places, 81 transitions, 259 flow. Second operand 13 states and 566 transitions. [2022-11-20 12:25:22,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 109 transitions, 538 flow [2022-11-20 12:25:22,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 109 transitions, 508 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-11-20 12:25:22,740 INFO L231 Difference]: Finished difference. Result has 107 places, 84 transitions, 309 flow [2022-11-20 12:25:22,740 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=309, PETRI_PLACES=107, PETRI_TRANSITIONS=84} [2022-11-20 12:25:22,741 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, 32 predicate places. [2022-11-20 12:25:22,741 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 84 transitions, 309 flow [2022-11-20 12:25:22,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 40.357142857142854) internal successors, (565), 14 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:22,742 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:25:22,742 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:25:22,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:25:22,743 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:25:22,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:25:22,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1120105136, now seen corresponding path program 2 times [2022-11-20 12:25:22,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:25:22,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405830973] [2022-11-20 12:25:22,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:25:22,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:25:22,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:23,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:25:23,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:25:23,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405830973] [2022-11-20 12:25:23,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405830973] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:25:23,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:25:23,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 12:25:23,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665088329] [2022-11-20 12:25:23,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:25:23,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 12:25:23,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:25:23,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 12:25:23,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:25:23,250 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 80 [2022-11-20 12:25:23,251 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 84 transitions, 309 flow. Second operand has 14 states, 14 states have (on average 40.357142857142854) internal successors, (565), 14 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:23,251 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:25:23,251 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 80 [2022-11-20 12:25:23,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:25:24,073 INFO L130 PetriNetUnfolder]: 55/289 cut-off events. [2022-11-20 12:25:24,073 INFO L131 PetriNetUnfolder]: For 420/422 co-relation queries the response was YES. [2022-11-20 12:25:24,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 723 conditions, 289 events. 55/289 cut-off events. For 420/422 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1447 event pairs, 2 based on Foata normal form. 4/293 useless extension candidates. Maximal degree in co-relation 644. Up to 35 conditions per place. [2022-11-20 12:25:24,076 INFO L137 encePairwiseOnDemand]: 65/80 looper letters, 54 selfloop transitions, 27 changer transitions 9/122 dead transitions. [2022-11-20 12:25:24,076 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 122 transitions, 677 flow [2022-11-20 12:25:24,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 12:25:24,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-20 12:25:24,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 731 transitions. [2022-11-20 12:25:24,080 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5375 [2022-11-20 12:25:24,080 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 731 transitions. [2022-11-20 12:25:24,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 731 transitions. [2022-11-20 12:25:24,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:25:24,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 731 transitions. [2022-11-20 12:25:24,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 43.0) internal successors, (731), 17 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:24,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 80.0) internal successors, (1440), 18 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:24,088 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 80.0) internal successors, (1440), 18 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:24,088 INFO L175 Difference]: Start difference. First operand has 107 places, 84 transitions, 309 flow. Second operand 17 states and 731 transitions. [2022-11-20 12:25:24,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 122 transitions, 677 flow [2022-11-20 12:25:24,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 122 transitions, 632 flow, removed 2 selfloop flow, removed 10 redundant places. [2022-11-20 12:25:24,095 INFO L231 Difference]: Finished difference. Result has 119 places, 92 transitions, 424 flow [2022-11-20 12:25:24,096 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=424, PETRI_PLACES=119, PETRI_TRANSITIONS=92} [2022-11-20 12:25:24,096 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, 44 predicate places. [2022-11-20 12:25:24,097 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 92 transitions, 424 flow [2022-11-20 12:25:24,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 40.357142857142854) internal successors, (565), 14 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:24,098 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:25:24,098 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:25:24,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 12:25:24,098 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:25:24,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:25:24,099 INFO L85 PathProgramCache]: Analyzing trace with hash 446887880, now seen corresponding path program 1 times [2022-11-20 12:25:24,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:25:24,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348374274] [2022-11-20 12:25:24,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:25:24,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:25:24,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:24,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:25:24,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:25:24,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348374274] [2022-11-20 12:25:24,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348374274] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:25:24,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:25:24,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 12:25:24,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036850637] [2022-11-20 12:25:24,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:25:24,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 12:25:24,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:25:24,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 12:25:24,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:25:24,593 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 80 [2022-11-20 12:25:24,596 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 92 transitions, 424 flow. Second operand has 14 states, 14 states have (on average 44.07142857142857) internal successors, (617), 14 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:24,596 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:25:24,597 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 80 [2022-11-20 12:25:24,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:25:25,759 INFO L130 PetriNetUnfolder]: 84/370 cut-off events. [2022-11-20 12:25:25,759 INFO L131 PetriNetUnfolder]: For 1097/1101 co-relation queries the response was YES. [2022-11-20 12:25:25,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1108 conditions, 370 events. 84/370 cut-off events. For 1097/1101 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2052 event pairs, 8 based on Foata normal form. 8/376 useless extension candidates. Maximal degree in co-relation 1082. Up to 53 conditions per place. [2022-11-20 12:25:25,762 INFO L137 encePairwiseOnDemand]: 65/80 looper letters, 60 selfloop transitions, 33 changer transitions 20/150 dead transitions. [2022-11-20 12:25:25,762 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 150 transitions, 1036 flow [2022-11-20 12:25:25,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 12:25:25,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-20 12:25:25,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 943 transitions. [2022-11-20 12:25:25,766 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.589375 [2022-11-20 12:25:25,766 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 943 transitions. [2022-11-20 12:25:25,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 943 transitions. [2022-11-20 12:25:25,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:25:25,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 943 transitions. [2022-11-20 12:25:25,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 47.15) internal successors, (943), 20 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:25,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 80.0) internal successors, (1680), 21 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:25,774 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 80.0) internal successors, (1680), 21 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:25,774 INFO L175 Difference]: Start difference. First operand has 119 places, 92 transitions, 424 flow. Second operand 20 states and 943 transitions. [2022-11-20 12:25:25,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 150 transitions, 1036 flow [2022-11-20 12:25:25,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 150 transitions, 922 flow, removed 7 selfloop flow, removed 12 redundant places. [2022-11-20 12:25:25,782 INFO L231 Difference]: Finished difference. Result has 129 places, 103 transitions, 547 flow [2022-11-20 12:25:25,783 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=547, PETRI_PLACES=129, PETRI_TRANSITIONS=103} [2022-11-20 12:25:25,784 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, 54 predicate places. [2022-11-20 12:25:25,784 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 103 transitions, 547 flow [2022-11-20 12:25:25,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 44.07142857142857) internal successors, (617), 14 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:25,785 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:25:25,785 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:25:25,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 12:25:25,785 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:25:25,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:25:25,786 INFO L85 PathProgramCache]: Analyzing trace with hash -134204114, now seen corresponding path program 3 times [2022-11-20 12:25:25,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:25:25,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425922000] [2022-11-20 12:25:25,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:25:25,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:25:25,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:26,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:25:26,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:25:26,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425922000] [2022-11-20 12:25:26,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425922000] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:25:26,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:25:26,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 12:25:26,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319373028] [2022-11-20 12:25:26,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:25:26,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 12:25:26,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:25:26,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 12:25:26,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:25:26,240 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 80 [2022-11-20 12:25:26,241 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 103 transitions, 547 flow. Second operand has 14 states, 14 states have (on average 40.357142857142854) internal successors, (565), 14 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:26,241 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:25:26,241 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 80 [2022-11-20 12:25:26,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:25:27,362 INFO L130 PetriNetUnfolder]: 74/343 cut-off events. [2022-11-20 12:25:27,362 INFO L131 PetriNetUnfolder]: For 1127/1131 co-relation queries the response was YES. [2022-11-20 12:25:27,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1085 conditions, 343 events. 74/343 cut-off events. For 1127/1131 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1828 event pairs, 6 based on Foata normal form. 6/347 useless extension candidates. Maximal degree in co-relation 1050. Up to 36 conditions per place. [2022-11-20 12:25:27,366 INFO L137 encePairwiseOnDemand]: 65/80 looper letters, 65 selfloop transitions, 40 changer transitions 13/150 dead transitions. [2022-11-20 12:25:27,366 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 150 transitions, 1072 flow [2022-11-20 12:25:27,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 12:25:27,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-20 12:25:27,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 864 transitions. [2022-11-20 12:25:27,370 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.54 [2022-11-20 12:25:27,370 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 864 transitions. [2022-11-20 12:25:27,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 864 transitions. [2022-11-20 12:25:27,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:25:27,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 864 transitions. [2022-11-20 12:25:27,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 43.2) internal successors, (864), 20 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:27,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 80.0) internal successors, (1680), 21 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:27,378 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 80.0) internal successors, (1680), 21 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:27,378 INFO L175 Difference]: Start difference. First operand has 129 places, 103 transitions, 547 flow. Second operand 20 states and 864 transitions. [2022-11-20 12:25:27,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 150 transitions, 1072 flow [2022-11-20 12:25:27,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 150 transitions, 930 flow, removed 16 selfloop flow, removed 14 redundant places. [2022-11-20 12:25:27,387 INFO L231 Difference]: Finished difference. Result has 136 places, 110 transitions, 644 flow [2022-11-20 12:25:27,388 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=644, PETRI_PLACES=136, PETRI_TRANSITIONS=110} [2022-11-20 12:25:27,390 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, 61 predicate places. [2022-11-20 12:25:27,391 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 110 transitions, 644 flow [2022-11-20 12:25:27,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 40.357142857142854) internal successors, (565), 14 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:27,391 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:25:27,392 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:25:27,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 12:25:27,392 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:25:27,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:25:27,393 INFO L85 PathProgramCache]: Analyzing trace with hash -2102677918, now seen corresponding path program 2 times [2022-11-20 12:25:27,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:25:27,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362610769] [2022-11-20 12:25:27,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:25:27,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:25:27,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:27,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:25:27,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:25:27,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362610769] [2022-11-20 12:25:27,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362610769] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:25:27,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:25:27,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 12:25:27,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366099506] [2022-11-20 12:25:27,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:25:27,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 12:25:27,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:25:27,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 12:25:27,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:25:27,825 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 80 [2022-11-20 12:25:27,826 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 110 transitions, 644 flow. Second operand has 14 states, 14 states have (on average 44.07142857142857) internal successors, (617), 14 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:27,826 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:25:27,826 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 80 [2022-11-20 12:25:27,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:25:29,027 INFO L130 PetriNetUnfolder]: 78/365 cut-off events. [2022-11-20 12:25:29,027 INFO L131 PetriNetUnfolder]: For 1202/1208 co-relation queries the response was YES. [2022-11-20 12:25:29,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1126 conditions, 365 events. 78/365 cut-off events. For 1202/1208 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2018 event pairs, 15 based on Foata normal form. 10/371 useless extension candidates. Maximal degree in co-relation 1094. Up to 42 conditions per place. [2022-11-20 12:25:29,032 INFO L137 encePairwiseOnDemand]: 65/80 looper letters, 63 selfloop transitions, 39 changer transitions 19/158 dead transitions. [2022-11-20 12:25:29,033 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 158 transitions, 1142 flow [2022-11-20 12:25:29,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 12:25:29,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-20 12:25:29,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1029 transitions. [2022-11-20 12:25:29,039 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.584659090909091 [2022-11-20 12:25:29,040 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1029 transitions. [2022-11-20 12:25:29,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1029 transitions. [2022-11-20 12:25:29,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:25:29,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1029 transitions. [2022-11-20 12:25:29,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 46.77272727272727) internal successors, (1029), 22 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:29,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 80.0) internal successors, (1840), 23 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:29,052 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 80.0) internal successors, (1840), 23 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:29,052 INFO L175 Difference]: Start difference. First operand has 136 places, 110 transitions, 644 flow. Second operand 22 states and 1029 transitions. [2022-11-20 12:25:29,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 158 transitions, 1142 flow [2022-11-20 12:25:29,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 158 transitions, 996 flow, removed 24 selfloop flow, removed 14 redundant places. [2022-11-20 12:25:29,067 INFO L231 Difference]: Finished difference. Result has 145 places, 111 transitions, 648 flow [2022-11-20 12:25:29,067 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=648, PETRI_PLACES=145, PETRI_TRANSITIONS=111} [2022-11-20 12:25:29,068 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, 70 predicate places. [2022-11-20 12:25:29,068 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 111 transitions, 648 flow [2022-11-20 12:25:29,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 44.07142857142857) internal successors, (617), 14 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:29,069 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:25:29,070 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:25:29,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 12:25:29,071 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:25:29,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:25:29,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1823505572, now seen corresponding path program 4 times [2022-11-20 12:25:29,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:25:29,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983377977] [2022-11-20 12:25:29,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:25:29,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:25:29,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:29,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:25:29,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:25:29,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983377977] [2022-11-20 12:25:29,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983377977] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:25:29,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:25:29,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 12:25:29,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263247203] [2022-11-20 12:25:29,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:25:29,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 12:25:29,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:25:29,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 12:25:29,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:25:29,570 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 80 [2022-11-20 12:25:29,575 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 111 transitions, 648 flow. Second operand has 14 states, 14 states have (on average 40.357142857142854) internal successors, (565), 14 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:29,576 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:25:29,576 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 80 [2022-11-20 12:25:29,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:25:30,644 INFO L130 PetriNetUnfolder]: 69/372 cut-off events. [2022-11-20 12:25:30,645 INFO L131 PetriNetUnfolder]: For 1030/1036 co-relation queries the response was YES. [2022-11-20 12:25:30,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1111 conditions, 372 events. 69/372 cut-off events. For 1030/1036 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2116 event pairs, 20 based on Foata normal form. 4/374 useless extension candidates. Maximal degree in co-relation 1059. Up to 82 conditions per place. [2022-11-20 12:25:30,648 INFO L137 encePairwiseOnDemand]: 65/80 looper letters, 62 selfloop transitions, 26 changer transitions 26/146 dead transitions. [2022-11-20 12:25:30,649 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 146 transitions, 1006 flow [2022-11-20 12:25:30,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 12:25:30,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-20 12:25:30,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 857 transitions. [2022-11-20 12:25:30,652 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.535625 [2022-11-20 12:25:30,652 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 857 transitions. [2022-11-20 12:25:30,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 857 transitions. [2022-11-20 12:25:30,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:25:30,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 857 transitions. [2022-11-20 12:25:30,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 42.85) internal successors, (857), 20 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:30,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 80.0) internal successors, (1680), 21 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:30,662 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 80.0) internal successors, (1680), 21 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:30,662 INFO L175 Difference]: Start difference. First operand has 145 places, 111 transitions, 648 flow. Second operand 20 states and 857 transitions. [2022-11-20 12:25:30,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 146 transitions, 1006 flow [2022-11-20 12:25:30,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 146 transitions, 917 flow, removed 8 selfloop flow, removed 17 redundant places. [2022-11-20 12:25:30,676 INFO L231 Difference]: Finished difference. Result has 151 places, 104 transitions, 575 flow [2022-11-20 12:25:30,677 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=575, PETRI_PLACES=151, PETRI_TRANSITIONS=104} [2022-11-20 12:25:30,681 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, 76 predicate places. [2022-11-20 12:25:30,681 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 104 transitions, 575 flow [2022-11-20 12:25:30,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 40.357142857142854) internal successors, (565), 14 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:30,682 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:25:30,682 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:25:30,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 12:25:30,683 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:25:30,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:25:30,684 INFO L85 PathProgramCache]: Analyzing trace with hash 506440784, now seen corresponding path program 5 times [2022-11-20 12:25:30,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:25:30,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295419681] [2022-11-20 12:25:30,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:25:30,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:25:30,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:31,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:25:31,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:25:31,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295419681] [2022-11-20 12:25:31,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295419681] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:25:31,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:25:31,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 12:25:31,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291153200] [2022-11-20 12:25:31,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:25:31,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 12:25:31,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:25:31,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 12:25:31,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:25:31,111 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 80 [2022-11-20 12:25:31,112 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 104 transitions, 575 flow. Second operand has 14 states, 14 states have (on average 40.357142857142854) internal successors, (565), 14 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:31,112 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:25:31,112 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 80 [2022-11-20 12:25:31,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:25:31,801 INFO L130 PetriNetUnfolder]: 52/296 cut-off events. [2022-11-20 12:25:31,802 INFO L131 PetriNetUnfolder]: For 745/751 co-relation queries the response was YES. [2022-11-20 12:25:31,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 848 conditions, 296 events. 52/296 cut-off events. For 745/751 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1477 event pairs, 20 based on Foata normal form. 4/298 useless extension candidates. Maximal degree in co-relation 809. Up to 82 conditions per place. [2022-11-20 12:25:31,805 INFO L137 encePairwiseOnDemand]: 65/80 looper letters, 55 selfloop transitions, 22 changer transitions 11/120 dead transitions. [2022-11-20 12:25:31,805 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 120 transitions, 789 flow [2022-11-20 12:25:31,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 12:25:31,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-20 12:25:31,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 643 transitions. [2022-11-20 12:25:31,807 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5358333333333334 [2022-11-20 12:25:31,808 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 643 transitions. [2022-11-20 12:25:31,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 643 transitions. [2022-11-20 12:25:31,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:25:31,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 643 transitions. [2022-11-20 12:25:31,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 42.86666666666667) internal successors, (643), 15 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:31,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 80.0) internal successors, (1280), 16 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:31,813 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 80.0) internal successors, (1280), 16 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:31,813 INFO L175 Difference]: Start difference. First operand has 151 places, 104 transitions, 575 flow. Second operand 15 states and 643 transitions. [2022-11-20 12:25:31,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 120 transitions, 789 flow [2022-11-20 12:25:31,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 120 transitions, 709 flow, removed 9 selfloop flow, removed 21 redundant places. [2022-11-20 12:25:31,821 INFO L231 Difference]: Finished difference. Result has 137 places, 99 transitions, 502 flow [2022-11-20 12:25:31,822 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=502, PETRI_PLACES=137, PETRI_TRANSITIONS=99} [2022-11-20 12:25:31,823 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, 62 predicate places. [2022-11-20 12:25:31,823 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 99 transitions, 502 flow [2022-11-20 12:25:31,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 40.357142857142854) internal successors, (565), 14 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:31,824 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:25:31,824 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:25:31,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 12:25:31,824 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:25:31,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:25:31,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1030253376, now seen corresponding path program 3 times [2022-11-20 12:25:31,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:25:31,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829949861] [2022-11-20 12:25:31,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:25:31,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:25:31,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:32,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:25:32,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:25:32,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829949861] [2022-11-20 12:25:32,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829949861] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:25:32,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:25:32,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 12:25:32,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083681073] [2022-11-20 12:25:32,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:25:32,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 12:25:32,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:25:32,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 12:25:32,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:25:32,252 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 80 [2022-11-20 12:25:32,253 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 99 transitions, 502 flow. Second operand has 14 states, 14 states have (on average 44.07142857142857) internal successors, (617), 14 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:32,253 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:25:32,253 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 80 [2022-11-20 12:25:32,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:25:32,980 INFO L130 PetriNetUnfolder]: 47/255 cut-off events. [2022-11-20 12:25:32,981 INFO L131 PetriNetUnfolder]: For 543/545 co-relation queries the response was YES. [2022-11-20 12:25:32,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 709 conditions, 255 events. 47/255 cut-off events. For 543/545 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1158 event pairs, 8 based on Foata normal form. 6/258 useless extension candidates. Maximal degree in co-relation 677. Up to 42 conditions per place. [2022-11-20 12:25:32,983 INFO L137 encePairwiseOnDemand]: 65/80 looper letters, 46 selfloop transitions, 23 changer transitions 16/121 dead transitions. [2022-11-20 12:25:32,983 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 121 transitions, 760 flow [2022-11-20 12:25:32,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 12:25:32,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-20 12:25:32,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 700 transitions. [2022-11-20 12:25:32,986 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2022-11-20 12:25:32,986 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 700 transitions. [2022-11-20 12:25:32,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 700 transitions. [2022-11-20 12:25:32,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:25:32,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 700 transitions. [2022-11-20 12:25:32,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 46.666666666666664) internal successors, (700), 15 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:32,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 80.0) internal successors, (1280), 16 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:32,992 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 80.0) internal successors, (1280), 16 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:32,992 INFO L175 Difference]: Start difference. First operand has 137 places, 99 transitions, 502 flow. Second operand 15 states and 700 transitions. [2022-11-20 12:25:32,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 121 transitions, 760 flow [2022-11-20 12:25:32,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 121 transitions, 704 flow, removed 6 selfloop flow, removed 15 redundant places. [2022-11-20 12:25:33,000 INFO L231 Difference]: Finished difference. Result has 130 places, 93 transitions, 441 flow [2022-11-20 12:25:33,000 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=441, PETRI_PLACES=130, PETRI_TRANSITIONS=93} [2022-11-20 12:25:33,001 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, 55 predicate places. [2022-11-20 12:25:33,001 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 93 transitions, 441 flow [2022-11-20 12:25:33,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 44.07142857142857) internal successors, (617), 14 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:33,002 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:25:33,002 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:25:33,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 12:25:33,003 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:25:33,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:25:33,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1984146026, now seen corresponding path program 6 times [2022-11-20 12:25:33,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:25:33,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168538812] [2022-11-20 12:25:33,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:25:33,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:25:33,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:33,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:25:33,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:25:33,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168538812] [2022-11-20 12:25:33,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168538812] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:25:33,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:25:33,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 12:25:33,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512582599] [2022-11-20 12:25:33,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:25:33,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 12:25:33,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:25:33,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 12:25:33,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:25:33,451 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 80 [2022-11-20 12:25:33,452 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 93 transitions, 441 flow. Second operand has 14 states, 14 states have (on average 40.357142857142854) internal successors, (565), 14 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:33,452 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:25:33,452 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 80 [2022-11-20 12:25:33,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:25:34,598 INFO L130 PetriNetUnfolder]: 47/231 cut-off events. [2022-11-20 12:25:34,599 INFO L131 PetriNetUnfolder]: For 535/537 co-relation queries the response was YES. [2022-11-20 12:25:34,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 673 conditions, 231 events. 47/231 cut-off events. For 535/537 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 982 event pairs, 0 based on Foata normal form. 4/235 useless extension candidates. Maximal degree in co-relation 643. Up to 24 conditions per place. [2022-11-20 12:25:34,601 INFO L137 encePairwiseOnDemand]: 65/80 looper letters, 41 selfloop transitions, 30 changer transitions 18/115 dead transitions. [2022-11-20 12:25:34,601 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 115 transitions, 693 flow [2022-11-20 12:25:34,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 12:25:34,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-20 12:25:34,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 915 transitions. [2022-11-20 12:25:34,604 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5198863636363636 [2022-11-20 12:25:34,604 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 915 transitions. [2022-11-20 12:25:34,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 915 transitions. [2022-11-20 12:25:34,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:25:34,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 915 transitions. [2022-11-20 12:25:34,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 41.59090909090909) internal successors, (915), 22 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:34,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 80.0) internal successors, (1840), 23 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:34,620 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 80.0) internal successors, (1840), 23 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:34,620 INFO L175 Difference]: Start difference. First operand has 130 places, 93 transitions, 441 flow. Second operand 22 states and 915 transitions. [2022-11-20 12:25:34,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 115 transitions, 693 flow [2022-11-20 12:25:34,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 115 transitions, 565 flow, removed 9 selfloop flow, removed 22 redundant places. [2022-11-20 12:25:34,628 INFO L231 Difference]: Finished difference. Result has 118 places, 82 transitions, 354 flow [2022-11-20 12:25:34,629 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=354, PETRI_PLACES=118, PETRI_TRANSITIONS=82} [2022-11-20 12:25:34,630 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, 43 predicate places. [2022-11-20 12:25:34,630 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 82 transitions, 354 flow [2022-11-20 12:25:34,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 40.357142857142854) internal successors, (565), 14 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:34,631 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:25:34,631 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:25:34,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 12:25:34,631 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:25:34,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:25:34,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1901455948, now seen corresponding path program 4 times [2022-11-20 12:25:34,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:25:34,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698548551] [2022-11-20 12:25:34,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:25:34,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:25:34,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:35,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:25:35,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:25:35,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698548551] [2022-11-20 12:25:35,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698548551] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:25:35,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:25:35,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 12:25:35,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629913793] [2022-11-20 12:25:35,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:25:35,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 12:25:35,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:25:35,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 12:25:35,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:25:35,078 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 80 [2022-11-20 12:25:35,079 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 82 transitions, 354 flow. Second operand has 14 states, 14 states have (on average 44.07142857142857) internal successors, (617), 14 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:35,079 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:25:35,079 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 80 [2022-11-20 12:25:35,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:25:35,783 INFO L130 PetriNetUnfolder]: 29/186 cut-off events. [2022-11-20 12:25:35,784 INFO L131 PetriNetUnfolder]: For 195/195 co-relation queries the response was YES. [2022-11-20 12:25:35,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 456 conditions, 186 events. 29/186 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 681 event pairs, 10 based on Foata normal form. 4/187 useless extension candidates. Maximal degree in co-relation 411. Up to 27 conditions per place. [2022-11-20 12:25:35,785 INFO L137 encePairwiseOnDemand]: 67/80 looper letters, 36 selfloop transitions, 17 changer transitions 14/97 dead transitions. [2022-11-20 12:25:35,785 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 97 transitions, 528 flow [2022-11-20 12:25:35,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 12:25:35,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-20 12:25:35,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 736 transitions. [2022-11-20 12:25:35,788 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.575 [2022-11-20 12:25:35,788 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 736 transitions. [2022-11-20 12:25:35,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 736 transitions. [2022-11-20 12:25:35,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:25:35,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 736 transitions. [2022-11-20 12:25:35,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 46.0) internal successors, (736), 16 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:35,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 80.0) internal successors, (1360), 17 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:35,796 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 80.0) internal successors, (1360), 17 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:35,796 INFO L175 Difference]: Start difference. First operand has 118 places, 82 transitions, 354 flow. Second operand 16 states and 736 transitions. [2022-11-20 12:25:35,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 97 transitions, 528 flow [2022-11-20 12:25:35,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 97 transitions, 423 flow, removed 8 selfloop flow, removed 22 redundant places. [2022-11-20 12:25:35,800 INFO L231 Difference]: Finished difference. Result has 103 places, 75 transitions, 258 flow [2022-11-20 12:25:35,800 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=258, PETRI_PLACES=103, PETRI_TRANSITIONS=75} [2022-11-20 12:25:35,801 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, 28 predicate places. [2022-11-20 12:25:35,802 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 75 transitions, 258 flow [2022-11-20 12:25:35,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 44.07142857142857) internal successors, (617), 14 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:35,802 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:25:35,803 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:25:35,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 12:25:35,803 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:25:35,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:25:35,804 INFO L85 PathProgramCache]: Analyzing trace with hash -467358836, now seen corresponding path program 5 times [2022-11-20 12:25:35,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:25:35,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38279687] [2022-11-20 12:25:35,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:25:35,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:25:35,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:36,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:25:36,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:25:36,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38279687] [2022-11-20 12:25:36,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38279687] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:25:36,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:25:36,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 12:25:36,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446962139] [2022-11-20 12:25:36,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:25:36,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 12:25:36,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:25:36,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 12:25:36,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:25:36,205 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 80 [2022-11-20 12:25:36,206 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 75 transitions, 258 flow. Second operand has 14 states, 14 states have (on average 44.07142857142857) internal successors, (617), 14 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:36,206 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:25:36,206 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 80 [2022-11-20 12:25:36,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:25:36,696 INFO L130 PetriNetUnfolder]: 18/134 cut-off events. [2022-11-20 12:25:36,696 INFO L131 PetriNetUnfolder]: For 95/95 co-relation queries the response was YES. [2022-11-20 12:25:36,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 295 conditions, 134 events. 18/134 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 335 event pairs, 5 based on Foata normal form. 4/136 useless extension candidates. Maximal degree in co-relation 270. Up to 27 conditions per place. [2022-11-20 12:25:36,698 INFO L137 encePairwiseOnDemand]: 67/80 looper letters, 28 selfloop transitions, 13 changer transitions 11/82 dead transitions. [2022-11-20 12:25:36,698 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 82 transitions, 380 flow [2022-11-20 12:25:36,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 12:25:36,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 12:25:36,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 596 transitions. [2022-11-20 12:25:36,704 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.573076923076923 [2022-11-20 12:25:36,704 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 596 transitions. [2022-11-20 12:25:36,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 596 transitions. [2022-11-20 12:25:36,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:25:36,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 596 transitions. [2022-11-20 12:25:36,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 45.84615384615385) internal successors, (596), 13 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:36,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 80.0) internal successors, (1120), 14 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:36,709 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 80.0) internal successors, (1120), 14 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:36,709 INFO L175 Difference]: Start difference. First operand has 103 places, 75 transitions, 258 flow. Second operand 13 states and 596 transitions. [2022-11-20 12:25:36,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 82 transitions, 380 flow [2022-11-20 12:25:36,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 82 transitions, 325 flow, removed 5 selfloop flow, removed 17 redundant places. [2022-11-20 12:25:36,712 INFO L231 Difference]: Finished difference. Result has 94 places, 70 transitions, 212 flow [2022-11-20 12:25:36,712 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=212, PETRI_PLACES=94, PETRI_TRANSITIONS=70} [2022-11-20 12:25:36,713 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, 19 predicate places. [2022-11-20 12:25:36,714 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 70 transitions, 212 flow [2022-11-20 12:25:36,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 44.07142857142857) internal successors, (617), 14 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:36,714 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:25:36,715 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:25:36,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 12:25:36,715 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:25:36,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:25:36,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1911421962, now seen corresponding path program 6 times [2022-11-20 12:25:36,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:25:36,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008654673] [2022-11-20 12:25:36,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:25:36,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:25:36,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:37,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:25:37,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:25:37,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008654673] [2022-11-20 12:25:37,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008654673] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:25:37,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:25:37,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 12:25:37,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244266507] [2022-11-20 12:25:37,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:25:37,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 12:25:37,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:25:37,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 12:25:37,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:25:37,040 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 80 [2022-11-20 12:25:37,040 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 70 transitions, 212 flow. Second operand has 14 states, 14 states have (on average 44.07142857142857) internal successors, (617), 14 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:37,040 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:25:37,040 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 80 [2022-11-20 12:25:37,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:25:37,464 INFO L130 PetriNetUnfolder]: 11/95 cut-off events. [2022-11-20 12:25:37,465 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2022-11-20 12:25:37,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 95 events. 11/95 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 150 event pairs, 4 based on Foata normal form. 4/97 useless extension candidates. Maximal degree in co-relation 189. Up to 14 conditions per place. [2022-11-20 12:25:37,465 INFO L137 encePairwiseOnDemand]: 68/80 looper letters, 0 selfloop transitions, 0 changer transitions 71/71 dead transitions. [2022-11-20 12:25:37,465 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 71 transitions, 292 flow [2022-11-20 12:25:37,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 12:25:37,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-20 12:25:37,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 543 transitions. [2022-11-20 12:25:37,467 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.565625 [2022-11-20 12:25:37,467 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 543 transitions. [2022-11-20 12:25:37,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 543 transitions. [2022-11-20 12:25:37,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:25:37,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 543 transitions. [2022-11-20 12:25:37,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 45.25) internal successors, (543), 12 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:37,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 80.0) internal successors, (1040), 13 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:37,472 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 80.0) internal successors, (1040), 13 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:37,472 INFO L175 Difference]: Start difference. First operand has 94 places, 70 transitions, 212 flow. Second operand 12 states and 543 transitions. [2022-11-20 12:25:37,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 71 transitions, 292 flow [2022-11-20 12:25:37,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 71 transitions, 262 flow, removed 1 selfloop flow, removed 11 redundant places. [2022-11-20 12:25:37,474 INFO L231 Difference]: Finished difference. Result has 84 places, 0 transitions, 0 flow [2022-11-20 12:25:37,474 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=84, PETRI_TRANSITIONS=0} [2022-11-20 12:25:37,475 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, 9 predicate places. [2022-11-20 12:25:37,475 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 0 transitions, 0 flow [2022-11-20 12:25:37,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 44.07142857142857) internal successors, (617), 14 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:37,479 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 7 remaining) [2022-11-20 12:25:37,479 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 7 remaining) [2022-11-20 12:25:37,480 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2022-11-20 12:25:37,480 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 7 remaining) [2022-11-20 12:25:37,480 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 7 remaining) [2022-11-20 12:25:37,480 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 7 remaining) [2022-11-20 12:25:37,481 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 7 remaining) [2022-11-20 12:25:37,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 12:25:37,481 INFO L444 BasicCegarLoop]: Path program histogram: [6, 6, 1, 1] [2022-11-20 12:25:37,488 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 12:25:37,488 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 12:25:37,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 12:25:37 BasicIcfg [2022-11-20 12:25:37,494 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 12:25:37,495 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 12:25:37,495 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 12:25:37,495 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 12:25:37,496 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:25:18" (3/4) ... [2022-11-20 12:25:37,499 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 12:25:37,506 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-11-20 12:25:37,511 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2022-11-20 12:25:37,511 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-20 12:25:37,511 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 12:25:37,559 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7c2b187-e844-4582-bdf2-44af1456a639/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 12:25:37,559 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 12:25:37,560 INFO L158 Benchmark]: Toolchain (without parser) took 20439.09ms. Allocated memory was 155.2MB in the beginning and 325.1MB in the end (delta: 169.9MB). Free memory was 120.9MB in the beginning and 144.3MB in the end (delta: -23.4MB). Peak memory consumption was 146.5MB. Max. memory is 16.1GB. [2022-11-20 12:25:37,560 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 125.8MB. Free memory is still 96.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:25:37,561 INFO L158 Benchmark]: CACSL2BoogieTranslator took 823.04ms. Allocated memory is still 155.2MB. Free memory was 120.9MB in the beginning and 109.4MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 12:25:37,561 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.32ms. Allocated memory is still 155.2MB. Free memory was 109.4MB in the beginning and 107.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:25:37,562 INFO L158 Benchmark]: Boogie Preprocessor took 27.19ms. Allocated memory is still 155.2MB. Free memory was 107.3MB in the beginning and 106.4MB in the end (delta: 923.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:25:37,562 INFO L158 Benchmark]: RCFGBuilder took 571.98ms. Allocated memory is still 155.2MB. Free memory was 106.4MB in the beginning and 90.5MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-20 12:25:37,562 INFO L158 Benchmark]: TraceAbstraction took 18873.62ms. Allocated memory was 155.2MB in the beginning and 325.1MB in the end (delta: 169.9MB). Free memory was 90.5MB in the beginning and 147.4MB in the end (delta: -56.9MB). Peak memory consumption was 116.0MB. Max. memory is 16.1GB. [2022-11-20 12:25:37,563 INFO L158 Benchmark]: Witness Printer took 64.63ms. Allocated memory is still 325.1MB. Free memory was 146.4MB in the beginning and 144.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:25:37,565 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 125.8MB. Free memory is still 96.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 823.04ms. Allocated memory is still 155.2MB. Free memory was 120.9MB in the beginning and 109.4MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.32ms. Allocated memory is still 155.2MB. Free memory was 109.4MB in the beginning and 107.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.19ms. Allocated memory is still 155.2MB. Free memory was 107.3MB in the beginning and 106.4MB in the end (delta: 923.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 571.98ms. Allocated memory is still 155.2MB. Free memory was 106.4MB in the beginning and 90.5MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 18873.62ms. Allocated memory was 155.2MB in the beginning and 325.1MB in the end (delta: 169.9MB). Free memory was 90.5MB in the beginning and 147.4MB in the end (delta: -56.9MB). Peak memory consumption was 116.0MB. Max. memory is 16.1GB. * Witness Printer took 64.63ms. Allocated memory is still 325.1MB. Free memory was 146.4MB in the beginning and 144.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 923]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 923]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 923]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 923]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 102 locations, 7 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: 18.7s, OverallIterations: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 11.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2653 SdHoareTripleChecker+Valid, 3.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2653 mSDsluCounter, 1305 SdHoareTripleChecker+Invalid, 2.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1073 mSDsCounter, 133 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3908 IncrementalHoareTripleChecker+Invalid, 4041 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 133 mSolverCounterUnsat, 232 mSDtfsCounter, 3908 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 355 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 341 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 719 ImplicationChecksByTransitivity, 8.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=648occurred in iteration=7, InterpolantAutomatonStates: 225, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 6.3s InterpolantComputationTime, 759 NumberOfCodeBlocks, 759 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 745 ConstructedInterpolants, 0 QuantifiedInterpolants, 9203 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-20 12:25:37,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7c2b187-e844-4582-bdf2-44af1456a639/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE