./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/04-mutex_46-escape_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_a368fbf2-0555-4705-9ba5-697cb02c9fd1/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a368fbf2-0555-4705-9ba5-697cb02c9fd1/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_a368fbf2-0555-4705-9ba5-697cb02c9fd1/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a368fbf2-0555-4705-9ba5-697cb02c9fd1/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/04-mutex_46-escape_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a368fbf2-0555-4705-9ba5-697cb02c9fd1/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_a368fbf2-0555-4705-9ba5-697cb02c9fd1/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 b71c523f20411078d17c9943b891d34ddfc00131917c4009fb579cdffacef23c --- 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 12:07:34,047 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:07:34,049 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:07:34,073 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:07:34,074 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:07:34,080 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:07:34,085 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:07:34,089 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:07:34,091 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:07:34,096 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:07:34,098 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:07:34,100 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:07:34,101 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:07:34,103 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:07:34,106 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:07:34,108 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:07:34,112 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:07:34,114 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:07:34,115 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:07:34,117 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:07:34,118 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:07:34,119 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:07:34,120 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:07:34,121 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:07:34,124 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:07:34,124 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:07:34,125 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:07:34,126 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:07:34,126 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:07:34,127 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:07:34,127 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:07:34,128 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:07:34,129 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:07:34,129 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:07:34,130 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:07:34,130 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:07:34,131 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:07:34,131 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:07:34,132 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:07:34,132 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:07:34,133 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:07:34,137 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a368fbf2-0555-4705-9ba5-697cb02c9fd1/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 12:07:34,168 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:07:34,171 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:07:34,172 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:07:34,173 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:07:34,174 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:07:34,174 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:07:34,175 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:07:34,175 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:07:34,175 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:07:34,175 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:07:34,176 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:07:34,177 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:07:34,177 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:07:34,177 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:07:34,177 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:07:34,178 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:07:34,178 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:07:34,178 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:07:34,178 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 12:07:34,178 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:07:34,179 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:07:34,179 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:07:34,179 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:07:34,179 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:07:34,180 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:07:34,180 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:07:34,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:07:34,180 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:07:34,180 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:07:34,181 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:07:34,181 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:07:34,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:07:34,182 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:07:34,182 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:07:34,182 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:07:34,182 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_a368fbf2-0555-4705-9ba5-697cb02c9fd1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a368fbf2-0555-4705-9ba5-697cb02c9fd1/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b71c523f20411078d17c9943b891d34ddfc00131917c4009fb579cdffacef23c [2022-11-20 12:07:34,526 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:07:34,558 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:07:34,561 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:07:34,562 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:07:34,563 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:07:34,564 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a368fbf2-0555-4705-9ba5-697cb02c9fd1/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/goblint-regression/04-mutex_46-escape_nr.i [2022-11-20 12:07:37,620 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:07:37,882 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:07:37,883 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a368fbf2-0555-4705-9ba5-697cb02c9fd1/sv-benchmarks/c/goblint-regression/04-mutex_46-escape_nr.i [2022-11-20 12:07:37,897 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a368fbf2-0555-4705-9ba5-697cb02c9fd1/bin/uautomizer-ug76WZFUDN/data/76a6a258c/89988d83984a41a1b33474984b35df5b/FLAG861d9b590 [2022-11-20 12:07:37,913 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a368fbf2-0555-4705-9ba5-697cb02c9fd1/bin/uautomizer-ug76WZFUDN/data/76a6a258c/89988d83984a41a1b33474984b35df5b [2022-11-20 12:07:37,916 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:07:37,917 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:07:37,919 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:07:37,919 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:07:37,923 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:07:37,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:07:37" (1/1) ... [2022-11-20 12:07:37,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33eed9d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:37, skipping insertion in model container [2022-11-20 12:07:37,926 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:07:37" (1/1) ... [2022-11-20 12:07:37,934 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:07:38,000 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:07:38,605 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:07:38,622 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:07:38,688 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:07:38,767 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:07:38,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:38 WrapperNode [2022-11-20 12:07:38,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:07:38,770 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:07:38,770 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:07:38,770 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:07:38,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:38" (1/1) ... [2022-11-20 12:07:38,811 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:38" (1/1) ... [2022-11-20 12:07:38,846 INFO L138 Inliner]: procedures = 263, calls = 27, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 64 [2022-11-20 12:07:38,847 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:07:38,848 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:07:38,848 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:07:38,848 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:07:38,860 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:38" (1/1) ... [2022-11-20 12:07:38,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:38" (1/1) ... [2022-11-20 12:07:38,869 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:38" (1/1) ... [2022-11-20 12:07:38,869 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:38" (1/1) ... [2022-11-20 12:07:38,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:38" (1/1) ... [2022-11-20 12:07:38,892 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:38" (1/1) ... [2022-11-20 12:07:38,894 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:38" (1/1) ... [2022-11-20 12:07:38,897 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:38" (1/1) ... [2022-11-20 12:07:38,907 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:07:38,908 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:07:38,914 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:07:38,915 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:07:38,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:38" (1/1) ... [2022-11-20 12:07:38,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:07:38,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a368fbf2-0555-4705-9ba5-697cb02c9fd1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:07:38,956 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a368fbf2-0555-4705-9ba5-697cb02c9fd1/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:07:38,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a368fbf2-0555-4705-9ba5-697cb02c9fd1/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:07:39,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:07:39,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:07:39,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:07:39,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:07:39,007 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 12:07:39,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:07:39,007 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-20 12:07:39,007 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-20 12:07:39,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:07:39,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:07:39,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:07:39,011 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 12:07:39,257 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:07:39,260 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:07:39,440 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:07:39,447 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:07:39,447 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 12:07:39,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:07:39 BoogieIcfgContainer [2022-11-20 12:07:39,451 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:07:39,453 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:07:39,453 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:07:39,457 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:07:39,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:07:37" (1/3) ... [2022-11-20 12:07:39,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36a8b4b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:07:39, skipping insertion in model container [2022-11-20 12:07:39,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:38" (2/3) ... [2022-11-20 12:07:39,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36a8b4b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:07:39, skipping insertion in model container [2022-11-20 12:07:39,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:07:39" (3/3) ... [2022-11-20 12:07:39,461 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_46-escape_nr.i [2022-11-20 12:07:39,470 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 12:07:39,480 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:07:39,481 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-20 12:07:39,481 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:07:39,543 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-20 12:07:39,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 85 transitions, 178 flow [2022-11-20 12:07:39,674 INFO L130 PetriNetUnfolder]: 1/84 cut-off events. [2022-11-20 12:07:39,674 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 12:07:39,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 84 events. 1/84 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 69 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 6. Up to 2 conditions per place. [2022-11-20 12:07:39,685 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 85 transitions, 178 flow [2022-11-20 12:07:39,689 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 67 transitions, 137 flow [2022-11-20 12:07:39,703 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:07:39,711 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;@46b53137, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:07:39,711 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-20 12:07:39,729 INFO L130 PetriNetUnfolder]: 0/48 cut-off events. [2022-11-20 12:07:39,730 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:07:39,730 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:07:39,731 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 12:07:39,732 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:07:39,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:07:39,738 INFO L85 PathProgramCache]: Analyzing trace with hash 962402375, now seen corresponding path program 1 times [2022-11-20 12:07:39,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:07:39,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297207953] [2022-11-20 12:07:39,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:39,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:07:39,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:40,750 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 12:07:40,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:07:40,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297207953] [2022-11-20 12:07:40,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297207953] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:07:40,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:07:40,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 12:07:40,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756001624] [2022-11-20 12:07:40,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:07:40,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:07:40,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:07:40,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:07:40,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:07:40,822 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 85 [2022-11-20 12:07:40,829 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 67 transitions, 137 flow. Second operand has 9 states, 9 states have (on average 48.111111111111114) internal successors, (433), 9 states have internal predecessors, (433), 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 12:07:40,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:07:40,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 85 [2022-11-20 12:07:40,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:07:41,228 INFO L130 PetriNetUnfolder]: 18/142 cut-off events. [2022-11-20 12:07:41,228 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:07:41,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218 conditions, 142 events. 18/142 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 482 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 161. Up to 21 conditions per place. [2022-11-20 12:07:41,231 INFO L137 encePairwiseOnDemand]: 72/85 looper letters, 27 selfloop transitions, 15 changer transitions 9/90 dead transitions. [2022-11-20 12:07:41,232 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 90 transitions, 285 flow [2022-11-20 12:07:41,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 12:07:41,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-20 12:07:41,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 605 transitions. [2022-11-20 12:07:41,262 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5931372549019608 [2022-11-20 12:07:41,263 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 605 transitions. [2022-11-20 12:07:41,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 605 transitions. [2022-11-20 12:07:41,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:07:41,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 605 transitions. [2022-11-20 12:07:41,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 50.416666666666664) internal successors, (605), 12 states have internal predecessors, (605), 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 12:07:41,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 85.0) internal successors, (1105), 13 states have internal predecessors, (1105), 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 12:07:41,285 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 85.0) internal successors, (1105), 13 states have internal predecessors, (1105), 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 12:07:41,287 INFO L175 Difference]: Start difference. First operand has 71 places, 67 transitions, 137 flow. Second operand 12 states and 605 transitions. [2022-11-20 12:07:41,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 90 transitions, 285 flow [2022-11-20 12:07:41,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 90 transitions, 284 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:07:41,294 INFO L231 Difference]: Finished difference. Result has 85 places, 73 transitions, 203 flow [2022-11-20 12:07:41,297 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=203, PETRI_PLACES=85, PETRI_TRANSITIONS=73} [2022-11-20 12:07:41,300 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 14 predicate places. [2022-11-20 12:07:41,300 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 73 transitions, 203 flow [2022-11-20 12:07:41,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 48.111111111111114) internal successors, (433), 9 states have internal predecessors, (433), 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 12:07:41,301 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:07:41,302 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 12:07:41,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:07:41,302 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:07:41,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:07:41,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1087476687, now seen corresponding path program 1 times [2022-11-20 12:07:41,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:07:41,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470980998] [2022-11-20 12:07:41,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:41,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:07:41,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:41,734 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 12:07:41,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:07:41,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470980998] [2022-11-20 12:07:41,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470980998] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:07:41,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:07:41,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 12:07:41,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272249243] [2022-11-20 12:07:41,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:07:41,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:07:41,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:07:41,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:07:41,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:07:41,745 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 85 [2022-11-20 12:07:41,747 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 73 transitions, 203 flow. Second operand has 12 states, 12 states have (on average 45.75) internal successors, (549), 12 states have internal predecessors, (549), 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 12:07:41,747 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:07:41,747 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 85 [2022-11-20 12:07:41,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:07:42,217 INFO L130 PetriNetUnfolder]: 28/176 cut-off events. [2022-11-20 12:07:42,217 INFO L131 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2022-11-20 12:07:42,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 363 conditions, 176 events. 28/176 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 704 event pairs, 5 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 296. Up to 32 conditions per place. [2022-11-20 12:07:42,220 INFO L137 encePairwiseOnDemand]: 69/85 looper letters, 33 selfloop transitions, 22 changer transitions 2/97 dead transitions. [2022-11-20 12:07:42,220 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 97 transitions, 397 flow [2022-11-20 12:07:42,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 12:07:42,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-20 12:07:42,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 717 transitions. [2022-11-20 12:07:42,223 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5623529411764706 [2022-11-20 12:07:42,223 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 717 transitions. [2022-11-20 12:07:42,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 717 transitions. [2022-11-20 12:07:42,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:07:42,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 717 transitions. [2022-11-20 12:07:42,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 47.8) internal successors, (717), 15 states have internal predecessors, (717), 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 12:07:42,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 85.0) internal successors, (1360), 16 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 12:07:42,230 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 85.0) internal successors, (1360), 16 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 12:07:42,230 INFO L175 Difference]: Start difference. First operand has 85 places, 73 transitions, 203 flow. Second operand 15 states and 717 transitions. [2022-11-20 12:07:42,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 97 transitions, 397 flow [2022-11-20 12:07:42,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 97 transitions, 379 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-20 12:07:42,235 INFO L231 Difference]: Finished difference. Result has 99 places, 83 transitions, 306 flow [2022-11-20 12:07:42,235 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=306, PETRI_PLACES=99, PETRI_TRANSITIONS=83} [2022-11-20 12:07:42,236 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 28 predicate places. [2022-11-20 12:07:42,236 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 83 transitions, 306 flow [2022-11-20 12:07:42,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 45.75) internal successors, (549), 12 states have internal predecessors, (549), 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 12:07:42,237 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:07:42,237 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 12:07:42,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:07:42,238 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:07:42,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:07:42,238 INFO L85 PathProgramCache]: Analyzing trace with hash -230297313, now seen corresponding path program 1 times [2022-11-20 12:07:42,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:07:42,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118595073] [2022-11-20 12:07:42,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:42,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:07:42,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:42,495 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 12:07:42,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:07:42,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118595073] [2022-11-20 12:07:42,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118595073] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:07:42,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:07:42,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 12:07:42,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735799582] [2022-11-20 12:07:42,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:07:42,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:07:42,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:07:42,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:07:42,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:07:42,502 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 85 [2022-11-20 12:07:42,503 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 83 transitions, 306 flow. Second operand has 9 states, 9 states have (on average 50.22222222222222) internal successors, (452), 9 states have internal predecessors, (452), 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 12:07:42,503 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:07:42,503 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 85 [2022-11-20 12:07:42,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:07:42,791 INFO L130 PetriNetUnfolder]: 13/141 cut-off events. [2022-11-20 12:07:42,791 INFO L131 PetriNetUnfolder]: For 84/88 co-relation queries the response was YES. [2022-11-20 12:07:42,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 141 events. 13/141 cut-off events. For 84/88 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 480 event pairs, 0 based on Foata normal form. 7/148 useless extension candidates. Maximal degree in co-relation 255. Up to 19 conditions per place. [2022-11-20 12:07:42,793 INFO L137 encePairwiseOnDemand]: 72/85 looper letters, 29 selfloop transitions, 11 changer transitions 6/90 dead transitions. [2022-11-20 12:07:42,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 90 transitions, 420 flow [2022-11-20 12:07:42,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 12:07:42,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 12:07:42,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 666 transitions. [2022-11-20 12:07:42,797 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6027149321266968 [2022-11-20 12:07:42,797 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 666 transitions. [2022-11-20 12:07:42,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 666 transitions. [2022-11-20 12:07:42,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:07:42,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 666 transitions. [2022-11-20 12:07:42,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 51.23076923076923) internal successors, (666), 13 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:42,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 85.0) internal successors, (1190), 14 states have internal predecessors, (1190), 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 12:07:42,805 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 85.0) internal successors, (1190), 14 states have internal predecessors, (1190), 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 12:07:42,805 INFO L175 Difference]: Start difference. First operand has 99 places, 83 transitions, 306 flow. Second operand 13 states and 666 transitions. [2022-11-20 12:07:42,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 90 transitions, 420 flow [2022-11-20 12:07:42,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 90 transitions, 397 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-20 12:07:42,810 INFO L231 Difference]: Finished difference. Result has 104 places, 79 transitions, 288 flow [2022-11-20 12:07:42,810 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=288, PETRI_PLACES=104, PETRI_TRANSITIONS=79} [2022-11-20 12:07:42,811 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 33 predicate places. [2022-11-20 12:07:42,811 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 79 transitions, 288 flow [2022-11-20 12:07:42,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 50.22222222222222) internal successors, (452), 9 states have internal predecessors, (452), 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 12:07:42,812 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:07:42,812 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 12:07:42,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:07:42,813 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:07:42,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:07:42,813 INFO L85 PathProgramCache]: Analyzing trace with hash 647961283, now seen corresponding path program 1 times [2022-11-20 12:07:42,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:07:42,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084846046] [2022-11-20 12:07:42,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:42,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:07:42,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:43,141 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 12:07:43,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:07:43,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084846046] [2022-11-20 12:07:43,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084846046] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:07:43,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:07:43,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 12:07:43,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457570162] [2022-11-20 12:07:43,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:07:43,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:07:43,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:07:43,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:07:43,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:07:43,151 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 85 [2022-11-20 12:07:43,152 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 79 transitions, 288 flow. Second operand has 12 states, 12 states have (on average 47.833333333333336) internal successors, (574), 12 states have internal predecessors, (574), 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 12:07:43,152 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:07:43,152 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 85 [2022-11-20 12:07:43,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:07:43,594 INFO L130 PetriNetUnfolder]: 24/150 cut-off events. [2022-11-20 12:07:43,595 INFO L131 PetriNetUnfolder]: For 122/124 co-relation queries the response was YES. [2022-11-20 12:07:43,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 377 conditions, 150 events. 24/150 cut-off events. For 122/124 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 509 event pairs, 4 based on Foata normal form. 6/155 useless extension candidates. Maximal degree in co-relation 299. Up to 23 conditions per place. [2022-11-20 12:07:43,597 INFO L137 encePairwiseOnDemand]: 69/85 looper letters, 27 selfloop transitions, 16 changer transitions 10/91 dead transitions. [2022-11-20 12:07:43,597 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 91 transitions, 440 flow [2022-11-20 12:07:43,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 12:07:43,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-20 12:07:43,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 789 transitions. [2022-11-20 12:07:43,600 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5801470588235295 [2022-11-20 12:07:43,600 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 789 transitions. [2022-11-20 12:07:43,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 789 transitions. [2022-11-20 12:07:43,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:07:43,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 789 transitions. [2022-11-20 12:07:43,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 49.3125) internal successors, (789), 16 states have internal predecessors, (789), 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 12:07:43,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 85.0) internal successors, (1445), 17 states have internal predecessors, (1445), 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 12:07:43,606 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 85.0) internal successors, (1445), 17 states have internal predecessors, (1445), 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 12:07:43,607 INFO L175 Difference]: Start difference. First operand has 104 places, 79 transitions, 288 flow. Second operand 16 states and 789 transitions. [2022-11-20 12:07:43,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 91 transitions, 440 flow [2022-11-20 12:07:43,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 91 transitions, 386 flow, removed 2 selfloop flow, removed 12 redundant places. [2022-11-20 12:07:43,611 INFO L231 Difference]: Finished difference. Result has 105 places, 75 transitions, 265 flow [2022-11-20 12:07:43,611 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=265, PETRI_PLACES=105, PETRI_TRANSITIONS=75} [2022-11-20 12:07:43,612 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 34 predicate places. [2022-11-20 12:07:43,612 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 75 transitions, 265 flow [2022-11-20 12:07:43,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 47.833333333333336) internal successors, (574), 12 states have internal predecessors, (574), 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 12:07:43,613 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:07:43,613 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] [2022-11-20 12:07:43,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 12:07:43,618 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:07:43,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:07:43,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1038474867, now seen corresponding path program 1 times [2022-11-20 12:07:43,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:07:43,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351078324] [2022-11-20 12:07:43,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:43,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:07:43,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:43,704 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 12:07:43,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:07:43,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351078324] [2022-11-20 12:07:43,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351078324] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:07:43,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:07:43,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:07:43,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022538154] [2022-11-20 12:07:43,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:07:43,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:07:43,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:07:43,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:07:43,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:07:43,707 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 85 [2022-11-20 12:07:43,707 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 75 transitions, 265 flow. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 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 12:07:43,708 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:07:43,708 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 85 [2022-11-20 12:07:43,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:07:43,734 INFO L130 PetriNetUnfolder]: 2/89 cut-off events. [2022-11-20 12:07:43,734 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2022-11-20 12:07:43,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 89 events. 2/89 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 107 event pairs, 0 based on Foata normal form. 2/91 useless extension candidates. Maximal degree in co-relation 134. Up to 12 conditions per place. [2022-11-20 12:07:43,737 INFO L137 encePairwiseOnDemand]: 81/85 looper letters, 7 selfloop transitions, 4 changer transitions 0/75 dead transitions. [2022-11-20 12:07:43,737 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 75 transitions, 287 flow [2022-11-20 12:07:43,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:07:43,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:07:43,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 232 transitions. [2022-11-20 12:07:43,738 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9098039215686274 [2022-11-20 12:07:43,739 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 232 transitions. [2022-11-20 12:07:43,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 232 transitions. [2022-11-20 12:07:43,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:07:43,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 232 transitions. [2022-11-20 12:07:43,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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 12:07:43,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 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 12:07:43,741 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 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 12:07:43,741 INFO L175 Difference]: Start difference. First operand has 105 places, 75 transitions, 265 flow. Second operand 3 states and 232 transitions. [2022-11-20 12:07:43,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 75 transitions, 287 flow [2022-11-20 12:07:43,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 75 transitions, 252 flow, removed 2 selfloop flow, removed 14 redundant places. [2022-11-20 12:07:43,748 INFO L231 Difference]: Finished difference. Result has 90 places, 75 transitions, 238 flow [2022-11-20 12:07:43,748 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=90, PETRI_TRANSITIONS=75} [2022-11-20 12:07:43,750 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 19 predicate places. [2022-11-20 12:07:43,750 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 75 transitions, 238 flow [2022-11-20 12:07:43,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 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 12:07:43,751 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:07:43,751 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] [2022-11-20 12:07:43,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 12:07:43,752 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 12:07:43,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:07:43,753 INFO L85 PathProgramCache]: Analyzing trace with hash -825762048, now seen corresponding path program 1 times [2022-11-20 12:07:43,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:07:43,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532704689] [2022-11-20 12:07:43,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:43,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:07:43,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:44,304 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 12:07:44,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:07:44,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532704689] [2022-11-20 12:07:44,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532704689] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:07:44,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:07:44,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-20 12:07:44,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139006384] [2022-11-20 12:07:44,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:07:44,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 12:07:44,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:07:44,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 12:07:44,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:07:44,310 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 85 [2022-11-20 12:07:44,310 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 75 transitions, 238 flow. Second operand has 15 states, 15 states have (on average 38.86666666666667) internal successors, (583), 15 states have internal predecessors, (583), 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 12:07:44,311 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:07:44,311 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 85 [2022-11-20 12:07:44,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:07:45,042 INFO L130 PetriNetUnfolder]: 21/120 cut-off events. [2022-11-20 12:07:45,043 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2022-11-20 12:07:45,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 120 events. 21/120 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 179 event pairs, 5 based on Foata normal form. 1/120 useless extension candidates. Maximal degree in co-relation 226. Up to 27 conditions per place. [2022-11-20 12:07:45,044 INFO L137 encePairwiseOnDemand]: 66/85 looper letters, 32 selfloop transitions, 30 changer transitions 0/92 dead transitions. [2022-11-20 12:07:45,044 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 92 transitions, 429 flow [2022-11-20 12:07:45,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-20 12:07:45,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-11-20 12:07:45,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 988 transitions. [2022-11-20 12:07:45,048 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46494117647058825 [2022-11-20 12:07:45,048 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 988 transitions. [2022-11-20 12:07:45,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 988 transitions. [2022-11-20 12:07:45,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:07:45,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 988 transitions. [2022-11-20 12:07:45,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 39.52) internal successors, (988), 25 states have internal predecessors, (988), 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 12:07:45,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 85.0) internal successors, (2210), 26 states have internal predecessors, (2210), 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 12:07:45,056 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 85.0) internal successors, (2210), 26 states have internal predecessors, (2210), 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 12:07:45,056 INFO L175 Difference]: Start difference. First operand has 90 places, 75 transitions, 238 flow. Second operand 25 states and 988 transitions. [2022-11-20 12:07:45,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 92 transitions, 429 flow [2022-11-20 12:07:45,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 92 transitions, 422 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:07:45,059 INFO L231 Difference]: Finished difference. Result has 110 places, 82 transitions, 326 flow [2022-11-20 12:07:45,060 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=326, PETRI_PLACES=110, PETRI_TRANSITIONS=82} [2022-11-20 12:07:45,060 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 39 predicate places. [2022-11-20 12:07:45,061 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 82 transitions, 326 flow [2022-11-20 12:07:45,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 38.86666666666667) internal successors, (583), 15 states have internal predecessors, (583), 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 12:07:45,061 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:07:45,061 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] [2022-11-20 12:07:45,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 12:07:45,062 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 12:07:45,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:07:45,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1377962579, now seen corresponding path program 1 times [2022-11-20 12:07:45,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:07:45,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002219269] [2022-11-20 12:07:45,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:45,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:07:45,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:45,489 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 12:07:45,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:07:45,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002219269] [2022-11-20 12:07:45,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002219269] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:07:45,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:07:45,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-20 12:07:45,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998870992] [2022-11-20 12:07:45,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:07:45,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 12:07:45,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:07:45,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 12:07:45,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:07:45,493 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 85 [2022-11-20 12:07:45,493 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 82 transitions, 326 flow. Second operand has 15 states, 15 states have (on average 38.86666666666667) internal successors, (583), 15 states have internal predecessors, (583), 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 12:07:45,493 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:07:45,494 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 85 [2022-11-20 12:07:45,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:07:46,078 INFO L130 PetriNetUnfolder]: 24/142 cut-off events. [2022-11-20 12:07:46,079 INFO L131 PetriNetUnfolder]: For 87/93 co-relation queries the response was YES. [2022-11-20 12:07:46,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 385 conditions, 142 events. 24/142 cut-off events. For 87/93 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 309 event pairs, 3 based on Foata normal form. 8/148 useless extension candidates. Maximal degree in co-relation 308. Up to 36 conditions per place. [2022-11-20 12:07:46,080 INFO L137 encePairwiseOnDemand]: 65/85 looper letters, 44 selfloop transitions, 28 changer transitions 0/102 dead transitions. [2022-11-20 12:07:46,080 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 102 transitions, 536 flow [2022-11-20 12:07:46,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 12:07:46,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 12:07:46,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 846 transitions. [2022-11-20 12:07:46,083 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47394957983193275 [2022-11-20 12:07:46,084 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 846 transitions. [2022-11-20 12:07:46,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 846 transitions. [2022-11-20 12:07:46,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:07:46,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 846 transitions. [2022-11-20 12:07:46,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 40.285714285714285) internal successors, (846), 21 states have internal predecessors, (846), 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 12:07:46,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 85.0) internal successors, (1870), 22 states have internal predecessors, (1870), 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 12:07:46,091 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 85.0) internal successors, (1870), 22 states have internal predecessors, (1870), 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 12:07:46,091 INFO L175 Difference]: Start difference. First operand has 110 places, 82 transitions, 326 flow. Second operand 21 states and 846 transitions. [2022-11-20 12:07:46,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 102 transitions, 536 flow [2022-11-20 12:07:46,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 102 transitions, 457 flow, removed 2 selfloop flow, removed 19 redundant places. [2022-11-20 12:07:46,096 INFO L231 Difference]: Finished difference. Result has 118 places, 89 transitions, 368 flow [2022-11-20 12:07:46,096 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=368, PETRI_PLACES=118, PETRI_TRANSITIONS=89} [2022-11-20 12:07:46,097 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 47 predicate places. [2022-11-20 12:07:46,097 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 89 transitions, 368 flow [2022-11-20 12:07:46,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 38.86666666666667) internal successors, (583), 15 states have internal predecessors, (583), 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 12:07:46,098 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:07:46,098 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] [2022-11-20 12:07:46,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 12:07:46,098 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:07:46,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:07:46,099 INFO L85 PathProgramCache]: Analyzing trace with hash -374649073, now seen corresponding path program 2 times [2022-11-20 12:07:46,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:07:46,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70757211] [2022-11-20 12:07:46,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:46,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:07:46,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:46,504 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 12:07:46,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:07:46,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70757211] [2022-11-20 12:07:46,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70757211] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:07:46,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:07:46,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-20 12:07:46,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304869454] [2022-11-20 12:07:46,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:07:46,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 12:07:46,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:07:46,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 12:07:46,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:07:46,517 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 85 [2022-11-20 12:07:46,518 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 89 transitions, 368 flow. Second operand has 15 states, 15 states have (on average 38.86666666666667) internal successors, (583), 15 states have internal predecessors, (583), 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 12:07:46,518 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:07:46,519 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 85 [2022-11-20 12:07:46,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:07:47,392 INFO L130 PetriNetUnfolder]: 33/184 cut-off events. [2022-11-20 12:07:47,392 INFO L131 PetriNetUnfolder]: For 155/161 co-relation queries the response was YES. [2022-11-20 12:07:47,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 542 conditions, 184 events. 33/184 cut-off events. For 155/161 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 551 event pairs, 4 based on Foata normal form. 8/189 useless extension candidates. Maximal degree in co-relation 488. Up to 38 conditions per place. [2022-11-20 12:07:47,394 INFO L137 encePairwiseOnDemand]: 65/85 looper letters, 48 selfloop transitions, 48 changer transitions 0/126 dead transitions. [2022-11-20 12:07:47,394 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 126 transitions, 722 flow [2022-11-20 12:07:47,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 12:07:47,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-20 12:07:47,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1196 transitions. [2022-11-20 12:07:47,398 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46901960784313723 [2022-11-20 12:07:47,398 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1196 transitions. [2022-11-20 12:07:47,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1196 transitions. [2022-11-20 12:07:47,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:07:47,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1196 transitions. [2022-11-20 12:07:47,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 39.86666666666667) internal successors, (1196), 30 states have internal predecessors, (1196), 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 12:07:47,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 85.0) internal successors, (2635), 31 states have internal predecessors, (2635), 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 12:07:47,408 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 85.0) internal successors, (2635), 31 states have internal predecessors, (2635), 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 12:07:47,408 INFO L175 Difference]: Start difference. First operand has 118 places, 89 transitions, 368 flow. Second operand 30 states and 1196 transitions. [2022-11-20 12:07:47,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 126 transitions, 722 flow [2022-11-20 12:07:47,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 126 transitions, 684 flow, removed 2 selfloop flow, removed 11 redundant places. [2022-11-20 12:07:47,413 INFO L231 Difference]: Finished difference. Result has 142 places, 109 transitions, 586 flow [2022-11-20 12:07:47,413 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=586, PETRI_PLACES=142, PETRI_TRANSITIONS=109} [2022-11-20 12:07:47,414 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 71 predicate places. [2022-11-20 12:07:47,414 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 109 transitions, 586 flow [2022-11-20 12:07:47,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 38.86666666666667) internal successors, (583), 15 states have internal predecessors, (583), 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 12:07:47,415 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:07:47,415 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] [2022-11-20 12:07:47,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 12:07:47,415 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:07:47,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:07:47,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1280106063, now seen corresponding path program 3 times [2022-11-20 12:07:47,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:07:47,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641349533] [2022-11-20 12:07:47,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:47,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:07:47,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:47,810 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 12:07:47,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:07:47,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641349533] [2022-11-20 12:07:47,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641349533] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:07:47,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:07:47,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-20 12:07:47,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877823918] [2022-11-20 12:07:47,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:07:47,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 12:07:47,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:07:47,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 12:07:47,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:07:47,813 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 85 [2022-11-20 12:07:47,814 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 109 transitions, 586 flow. Second operand has 15 states, 15 states have (on average 38.86666666666667) internal successors, (583), 15 states have internal predecessors, (583), 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 12:07:47,814 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:07:47,814 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 85 [2022-11-20 12:07:47,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:07:48,509 INFO L130 PetriNetUnfolder]: 37/203 cut-off events. [2022-11-20 12:07:48,509 INFO L131 PetriNetUnfolder]: For 279/285 co-relation queries the response was YES. [2022-11-20 12:07:48,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 680 conditions, 203 events. 37/203 cut-off events. For 279/285 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 671 event pairs, 3 based on Foata normal form. 8/207 useless extension candidates. Maximal degree in co-relation 616. Up to 36 conditions per place. [2022-11-20 12:07:48,512 INFO L137 encePairwiseOnDemand]: 65/85 looper letters, 48 selfloop transitions, 51 changer transitions 0/129 dead transitions. [2022-11-20 12:07:48,512 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 129 transitions, 856 flow [2022-11-20 12:07:48,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-20 12:07:48,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-11-20 12:07:48,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1043 transitions. [2022-11-20 12:07:48,515 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47194570135746605 [2022-11-20 12:07:48,515 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 1043 transitions. [2022-11-20 12:07:48,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 1043 transitions. [2022-11-20 12:07:48,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:07:48,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 1043 transitions. [2022-11-20 12:07:48,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 40.11538461538461) internal successors, (1043), 26 states have internal predecessors, (1043), 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 12:07:48,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 85.0) internal successors, (2295), 27 states have internal predecessors, (2295), 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 12:07:48,523 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 85.0) internal successors, (2295), 27 states have internal predecessors, (2295), 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 12:07:48,523 INFO L175 Difference]: Start difference. First operand has 142 places, 109 transitions, 586 flow. Second operand 26 states and 1043 transitions. [2022-11-20 12:07:48,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 129 transitions, 856 flow [2022-11-20 12:07:48,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 129 transitions, 781 flow, removed 20 selfloop flow, removed 12 redundant places. [2022-11-20 12:07:48,529 INFO L231 Difference]: Finished difference. Result has 160 places, 113 transitions, 678 flow [2022-11-20 12:07:48,530 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=678, PETRI_PLACES=160, PETRI_TRANSITIONS=113} [2022-11-20 12:07:48,531 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 89 predicate places. [2022-11-20 12:07:48,531 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 113 transitions, 678 flow [2022-11-20 12:07:48,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 38.86666666666667) internal successors, (583), 15 states have internal predecessors, (583), 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 12:07:48,532 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:07:48,532 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] [2022-11-20 12:07:48,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 12:07:48,532 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 12:07:48,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:07:48,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1835141265, now seen corresponding path program 4 times [2022-11-20 12:07:48,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:07:48,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102724906] [2022-11-20 12:07:48,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:48,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:07:48,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:48,896 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 12:07:48,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:07:48,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102724906] [2022-11-20 12:07:48,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102724906] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:07:48,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:07:48,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-20 12:07:48,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532491499] [2022-11-20 12:07:48,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:07:48,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 12:07:48,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:07:48,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 12:07:48,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:07:48,899 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 85 [2022-11-20 12:07:48,900 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 113 transitions, 678 flow. Second operand has 15 states, 15 states have (on average 38.86666666666667) internal successors, (583), 15 states have internal predecessors, (583), 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 12:07:48,900 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:07:48,900 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 85 [2022-11-20 12:07:48,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:07:49,777 INFO L130 PetriNetUnfolder]: 45/242 cut-off events. [2022-11-20 12:07:49,777 INFO L131 PetriNetUnfolder]: For 518/524 co-relation queries the response was YES. [2022-11-20 12:07:49,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 860 conditions, 242 events. 45/242 cut-off events. For 518/524 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 950 event pairs, 12 based on Foata normal form. 2/239 useless extension candidates. Maximal degree in co-relation 764. Up to 68 conditions per place. [2022-11-20 12:07:49,779 INFO L137 encePairwiseOnDemand]: 66/85 looper letters, 67 selfloop transitions, 53 changer transitions 0/150 dead transitions. [2022-11-20 12:07:49,780 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 150 transitions, 1108 flow [2022-11-20 12:07:49,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-20 12:07:49,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-11-20 12:07:49,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1161 transitions. [2022-11-20 12:07:49,785 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47099391480730224 [2022-11-20 12:07:49,785 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1161 transitions. [2022-11-20 12:07:49,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1161 transitions. [2022-11-20 12:07:49,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:07:49,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1161 transitions. [2022-11-20 12:07:49,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 40.03448275862069) internal successors, (1161), 29 states have internal predecessors, (1161), 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 12:07:49,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 85.0) internal successors, (2550), 30 states have internal predecessors, (2550), 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 12:07:49,793 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 85.0) internal successors, (2550), 30 states have internal predecessors, (2550), 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 12:07:49,793 INFO L175 Difference]: Start difference. First operand has 160 places, 113 transitions, 678 flow. Second operand 29 states and 1161 transitions. [2022-11-20 12:07:49,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 150 transitions, 1108 flow [2022-11-20 12:07:49,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 150 transitions, 1008 flow, removed 8 selfloop flow, removed 21 redundant places. [2022-11-20 12:07:49,808 INFO L231 Difference]: Finished difference. Result has 174 places, 133 transitions, 881 flow [2022-11-20 12:07:49,809 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=881, PETRI_PLACES=174, PETRI_TRANSITIONS=133} [2022-11-20 12:07:49,811 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 103 predicate places. [2022-11-20 12:07:49,813 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 133 transitions, 881 flow [2022-11-20 12:07:49,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 38.86666666666667) internal successors, (583), 15 states have internal predecessors, (583), 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 12:07:49,814 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:07:49,814 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] [2022-11-20 12:07:49,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 12:07:49,814 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:07:49,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:07:49,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1735593881, now seen corresponding path program 5 times [2022-11-20 12:07:49,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:07:49,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231854598] [2022-11-20 12:07:49,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:49,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:07:49,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:50,178 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 12:07:50,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:07:50,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231854598] [2022-11-20 12:07:50,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231854598] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:07:50,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:07:50,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-20 12:07:50,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179999600] [2022-11-20 12:07:50,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:07:50,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 12:07:50,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:07:50,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 12:07:50,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:07:50,181 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 85 [2022-11-20 12:07:50,181 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 133 transitions, 881 flow. Second operand has 15 states, 15 states have (on average 38.86666666666667) internal successors, (583), 15 states have internal predecessors, (583), 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 12:07:50,181 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:07:50,182 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 85 [2022-11-20 12:07:50,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:07:51,187 INFO L130 PetriNetUnfolder]: 49/261 cut-off events. [2022-11-20 12:07:51,188 INFO L131 PetriNetUnfolder]: For 630/636 co-relation queries the response was YES. [2022-11-20 12:07:51,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 984 conditions, 261 events. 49/261 cut-off events. For 630/636 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1089 event pairs, 9 based on Foata normal form. 8/263 useless extension candidates. Maximal degree in co-relation 905. Up to 66 conditions per place. [2022-11-20 12:07:51,191 INFO L137 encePairwiseOnDemand]: 65/85 looper letters, 65 selfloop transitions, 62 changer transitions 0/157 dead transitions. [2022-11-20 12:07:51,191 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 157 transitions, 1233 flow [2022-11-20 12:07:51,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 12:07:51,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-20 12:07:51,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1240 transitions. [2022-11-20 12:07:51,195 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47058823529411764 [2022-11-20 12:07:51,195 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1240 transitions. [2022-11-20 12:07:51,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1240 transitions. [2022-11-20 12:07:51,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:07:51,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1240 transitions. [2022-11-20 12:07:51,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 40.0) internal successors, (1240), 31 states have internal predecessors, (1240), 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 12:07:51,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 85.0) internal successors, (2720), 32 states have internal predecessors, (2720), 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 12:07:51,212 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 85.0) internal successors, (2720), 32 states have internal predecessors, (2720), 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 12:07:51,212 INFO L175 Difference]: Start difference. First operand has 174 places, 133 transitions, 881 flow. Second operand 31 states and 1240 transitions. [2022-11-20 12:07:51,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 157 transitions, 1233 flow [2022-11-20 12:07:51,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 157 transitions, 1118 flow, removed 20 selfloop flow, removed 13 redundant places. [2022-11-20 12:07:51,224 INFO L231 Difference]: Finished difference. Result has 196 places, 137 transitions, 965 flow [2022-11-20 12:07:51,225 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=767, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=965, PETRI_PLACES=196, PETRI_TRANSITIONS=137} [2022-11-20 12:07:51,225 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 125 predicate places. [2022-11-20 12:07:51,226 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 137 transitions, 965 flow [2022-11-20 12:07:51,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 38.86666666666667) internal successors, (583), 15 states have internal predecessors, (583), 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 12:07:51,226 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:07:51,226 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] [2022-11-20 12:07:51,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 12:07:51,227 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 12:07:51,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:07:51,227 INFO L85 PathProgramCache]: Analyzing trace with hash -42175315, now seen corresponding path program 6 times [2022-11-20 12:07:51,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:07:51,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530149449] [2022-11-20 12:07:51,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:51,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:07:51,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:51,569 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 12:07:51,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:07:51,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530149449] [2022-11-20 12:07:51,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530149449] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:07:51,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:07:51,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-20 12:07:51,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927787505] [2022-11-20 12:07:51,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:07:51,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 12:07:51,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:07:51,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 12:07:51,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:07:51,572 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 85 [2022-11-20 12:07:51,573 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 137 transitions, 965 flow. Second operand has 15 states, 15 states have (on average 38.86666666666667) internal successors, (583), 15 states have internal predecessors, (583), 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 12:07:51,573 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:07:51,573 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 85 [2022-11-20 12:07:51,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:07:52,349 INFO L130 PetriNetUnfolder]: 52/280 cut-off events. [2022-11-20 12:07:52,349 INFO L131 PetriNetUnfolder]: For 872/878 co-relation queries the response was YES. [2022-11-20 12:07:52,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1096 conditions, 280 events. 52/280 cut-off events. For 872/878 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1222 event pairs, 18 based on Foata normal form. 2/276 useless extension candidates. Maximal degree in co-relation 1012. Up to 76 conditions per place. [2022-11-20 12:07:52,352 INFO L137 encePairwiseOnDemand]: 66/85 looper letters, 60 selfloop transitions, 68 changer transitions 0/158 dead transitions. [2022-11-20 12:07:52,352 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 158 transitions, 1348 flow [2022-11-20 12:07:52,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-20 12:07:52,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-11-20 12:07:52,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1001 transitions. [2022-11-20 12:07:52,355 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47105882352941175 [2022-11-20 12:07:52,355 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 1001 transitions. [2022-11-20 12:07:52,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 1001 transitions. [2022-11-20 12:07:52,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:07:52,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 1001 transitions. [2022-11-20 12:07:52,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 40.04) internal successors, (1001), 25 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:52,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 85.0) internal successors, (2210), 26 states have internal predecessors, (2210), 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 12:07:52,362 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 85.0) internal successors, (2210), 26 states have internal predecessors, (2210), 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 12:07:52,363 INFO L175 Difference]: Start difference. First operand has 196 places, 137 transitions, 965 flow. Second operand 25 states and 1001 transitions. [2022-11-20 12:07:52,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 158 transitions, 1348 flow [2022-11-20 12:07:52,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 158 transitions, 1222 flow, removed 13 selfloop flow, removed 26 redundant places. [2022-11-20 12:07:52,373 INFO L231 Difference]: Finished difference. Result has 199 places, 148 transitions, 1136 flow [2022-11-20 12:07:52,374 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1136, PETRI_PLACES=199, PETRI_TRANSITIONS=148} [2022-11-20 12:07:52,374 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 128 predicate places. [2022-11-20 12:07:52,375 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 148 transitions, 1136 flow [2022-11-20 12:07:52,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 38.86666666666667) internal successors, (583), 15 states have internal predecessors, (583), 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 12:07:52,375 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:07:52,375 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] [2022-11-20 12:07:52,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 12:07:52,376 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 12:07:52,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:07:52,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1617551597, now seen corresponding path program 7 times [2022-11-20 12:07:52,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:07:52,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062164853] [2022-11-20 12:07:52,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:52,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:07:52,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:52,734 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 12:07:52,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:07:52,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062164853] [2022-11-20 12:07:52,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062164853] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:07:52,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:07:52,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-20 12:07:52,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236682300] [2022-11-20 12:07:52,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:07:52,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 12:07:52,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:07:52,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 12:07:52,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:07:52,746 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 85 [2022-11-20 12:07:52,748 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 148 transitions, 1136 flow. Second operand has 15 states, 15 states have (on average 38.86666666666667) internal successors, (583), 15 states have internal predecessors, (583), 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 12:07:52,749 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:07:52,750 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 85 [2022-11-20 12:07:52,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:07:53,889 INFO L130 PetriNetUnfolder]: 58/305 cut-off events. [2022-11-20 12:07:53,889 INFO L131 PetriNetUnfolder]: For 998/1004 co-relation queries the response was YES. [2022-11-20 12:07:53,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1256 conditions, 305 events. 58/305 cut-off events. For 998/1004 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1415 event pairs, 3 based on Foata normal form. 8/305 useless extension candidates. Maximal degree in co-relation 1162. Up to 63 conditions per place. [2022-11-20 12:07:53,893 INFO L137 encePairwiseOnDemand]: 65/85 looper letters, 48 selfloop transitions, 95 changer transitions 0/173 dead transitions. [2022-11-20 12:07:53,894 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 173 transitions, 1578 flow [2022-11-20 12:07:53,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-20 12:07:53,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-20 12:07:53,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1500 transitions. [2022-11-20 12:07:53,906 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46439628482972134 [2022-11-20 12:07:53,906 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 1500 transitions. [2022-11-20 12:07:53,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 1500 transitions. [2022-11-20 12:07:53,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:07:53,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 1500 transitions. [2022-11-20 12:07:53,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 39.473684210526315) internal successors, (1500), 38 states have internal predecessors, (1500), 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 12:07:53,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 85.0) internal successors, (3315), 39 states have internal predecessors, (3315), 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 12:07:53,927 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 85.0) internal successors, (3315), 39 states have internal predecessors, (3315), 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 12:07:53,927 INFO L175 Difference]: Start difference. First operand has 199 places, 148 transitions, 1136 flow. Second operand 38 states and 1500 transitions. [2022-11-20 12:07:53,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 173 transitions, 1578 flow [2022-11-20 12:07:53,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 173 transitions, 1351 flow, removed 47 selfloop flow, removed 17 redundant places. [2022-11-20 12:07:53,942 INFO L231 Difference]: Finished difference. Result has 226 places, 158 transitions, 1289 flow [2022-11-20 12:07:53,943 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=952, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=1289, PETRI_PLACES=226, PETRI_TRANSITIONS=158} [2022-11-20 12:07:53,944 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 155 predicate places. [2022-11-20 12:07:53,945 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 158 transitions, 1289 flow [2022-11-20 12:07:53,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 38.86666666666667) internal successors, (583), 15 states have internal predecessors, (583), 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 12:07:53,945 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:07:53,945 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] [2022-11-20 12:07:53,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 12:07:53,947 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 12:07:53,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:07:53,948 INFO L85 PathProgramCache]: Analyzing trace with hash -2083743537, now seen corresponding path program 8 times [2022-11-20 12:07:53,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:07:53,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565782856] [2022-11-20 12:07:53,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:53,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:07:53,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:54,286 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 12:07:54,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:07:54,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565782856] [2022-11-20 12:07:54,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565782856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:07:54,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:07:54,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-20 12:07:54,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036361080] [2022-11-20 12:07:54,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:07:54,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 12:07:54,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:07:54,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 12:07:54,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:07:54,289 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 85 [2022-11-20 12:07:54,289 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 158 transitions, 1289 flow. Second operand has 15 states, 15 states have (on average 38.86666666666667) internal successors, (583), 15 states have internal predecessors, (583), 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 12:07:54,289 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:07:54,290 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 85 [2022-11-20 12:07:54,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:07:55,114 INFO L130 PetriNetUnfolder]: 57/302 cut-off events. [2022-11-20 12:07:55,114 INFO L131 PetriNetUnfolder]: For 1137/1143 co-relation queries the response was YES. [2022-11-20 12:07:55,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1281 conditions, 302 events. 57/302 cut-off events. For 1137/1143 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1393 event pairs, 0 based on Foata normal form. 8/303 useless extension candidates. Maximal degree in co-relation 1200. Up to 72 conditions per place. [2022-11-20 12:07:55,117 INFO L137 encePairwiseOnDemand]: 66/85 looper letters, 36 selfloop transitions, 100 changer transitions 0/166 dead transitions. [2022-11-20 12:07:55,118 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 166 transitions, 1570 flow [2022-11-20 12:07:55,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 12:07:55,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-20 12:07:55,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1217 transitions. [2022-11-20 12:07:55,121 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4618595825426945 [2022-11-20 12:07:55,121 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1217 transitions. [2022-11-20 12:07:55,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1217 transitions. [2022-11-20 12:07:55,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:07:55,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1217 transitions. [2022-11-20 12:07:55,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 39.25806451612903) internal successors, (1217), 31 states have internal predecessors, (1217), 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 12:07:55,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 85.0) internal successors, (2720), 32 states have internal predecessors, (2720), 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 12:07:55,129 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 85.0) internal successors, (2720), 32 states have internal predecessors, (2720), 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 12:07:55,130 INFO L175 Difference]: Start difference. First operand has 226 places, 158 transitions, 1289 flow. Second operand 31 states and 1217 transitions. [2022-11-20 12:07:55,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 166 transitions, 1570 flow [2022-11-20 12:07:55,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 166 transitions, 1374 flow, removed 15 selfloop flow, removed 31 redundant places. [2022-11-20 12:07:55,144 INFO L231 Difference]: Finished difference. Result has 223 places, 157 transitions, 1280 flow [2022-11-20 12:07:55,145 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=1080, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1280, PETRI_PLACES=223, PETRI_TRANSITIONS=157} [2022-11-20 12:07:55,145 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 152 predicate places. [2022-11-20 12:07:55,146 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 157 transitions, 1280 flow [2022-11-20 12:07:55,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 38.86666666666667) internal successors, (583), 15 states have internal predecessors, (583), 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 12:07:55,146 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:07:55,146 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 12:07:55,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 12:07:55,147 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:07:55,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:07:55,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1890786567, now seen corresponding path program 1 times [2022-11-20 12:07:55,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:07:55,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367003135] [2022-11-20 12:07:55,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:55,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:07:55,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:55,324 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 12:07:55,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:07:55,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367003135] [2022-11-20 12:07:55,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367003135] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:07:55,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:07:55,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 12:07:55,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378954842] [2022-11-20 12:07:55,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:07:55,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:07:55,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:07:55,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:07:55,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:07:55,327 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 85 [2022-11-20 12:07:55,328 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 157 transitions, 1280 flow. Second operand has 9 states, 9 states have (on average 51.55555555555556) internal successors, (464), 9 states have internal predecessors, (464), 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 12:07:55,328 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:07:55,328 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 85 [2022-11-20 12:07:55,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:07:55,564 INFO L130 PetriNetUnfolder]: 62/347 cut-off events. [2022-11-20 12:07:55,565 INFO L131 PetriNetUnfolder]: For 1574/1580 co-relation queries the response was YES. [2022-11-20 12:07:55,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1515 conditions, 347 events. 62/347 cut-off events. For 1574/1580 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1815 event pairs, 28 based on Foata normal form. 14/350 useless extension candidates. Maximal degree in co-relation 1435. Up to 150 conditions per place. [2022-11-20 12:07:55,568 INFO L137 encePairwiseOnDemand]: 76/85 looper letters, 74 selfloop transitions, 23 changer transitions 37/181 dead transitions. [2022-11-20 12:07:55,568 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 181 transitions, 1768 flow [2022-11-20 12:07:55,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:07:55,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 12:07:55,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 542 transitions. [2022-11-20 12:07:55,570 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6376470588235295 [2022-11-20 12:07:55,570 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 542 transitions. [2022-11-20 12:07:55,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 542 transitions. [2022-11-20 12:07:55,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:07:55,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 542 transitions. [2022-11-20 12:07:55,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 54.2) internal successors, (542), 10 states have internal predecessors, (542), 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 12:07:55,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:55,574 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:55,574 INFO L175 Difference]: Start difference. First operand has 223 places, 157 transitions, 1280 flow. Second operand 10 states and 542 transitions. [2022-11-20 12:07:55,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 181 transitions, 1768 flow [2022-11-20 12:07:55,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 181 transitions, 1490 flow, removed 7 selfloop flow, removed 32 redundant places. [2022-11-20 12:07:55,589 INFO L231 Difference]: Finished difference. Result has 206 places, 139 transitions, 942 flow [2022-11-20 12:07:55,589 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=1023, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=942, PETRI_PLACES=206, PETRI_TRANSITIONS=139} [2022-11-20 12:07:55,590 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 135 predicate places. [2022-11-20 12:07:55,590 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 139 transitions, 942 flow [2022-11-20 12:07:55,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 51.55555555555556) internal successors, (464), 9 states have internal predecessors, (464), 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 12:07:55,590 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:07:55,591 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 12:07:55,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 12:07:55,591 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:07:55,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:07:55,592 INFO L85 PathProgramCache]: Analyzing trace with hash -2022250554, now seen corresponding path program 1 times [2022-11-20 12:07:55,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:07:55,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39300473] [2022-11-20 12:07:55,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:55,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:07:55,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:55,741 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 12:07:55,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:07:55,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39300473] [2022-11-20 12:07:55,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39300473] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:07:55,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:07:55,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 12:07:55,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258362388] [2022-11-20 12:07:55,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:07:55,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:07:55,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:07:55,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:07:55,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:07:55,745 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 85 [2022-11-20 12:07:55,745 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 139 transitions, 942 flow. Second operand has 9 states, 9 states have (on average 51.55555555555556) internal successors, (464), 9 states have internal predecessors, (464), 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 12:07:55,746 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:07:55,746 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 85 [2022-11-20 12:07:55,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:07:55,968 INFO L130 PetriNetUnfolder]: 48/261 cut-off events. [2022-11-20 12:07:55,968 INFO L131 PetriNetUnfolder]: For 1004/1008 co-relation queries the response was YES. [2022-11-20 12:07:55,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1042 conditions, 261 events. 48/261 cut-off events. For 1004/1008 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1100 event pairs, 24 based on Foata normal form. 5/260 useless extension candidates. Maximal degree in co-relation 1001. Up to 140 conditions per place. [2022-11-20 12:07:55,971 INFO L137 encePairwiseOnDemand]: 76/85 looper letters, 75 selfloop transitions, 22 changer transitions 15/144 dead transitions. [2022-11-20 12:07:55,971 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 144 transitions, 1171 flow [2022-11-20 12:07:55,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:07:55,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 12:07:55,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 535 transitions. [2022-11-20 12:07:55,973 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6294117647058823 [2022-11-20 12:07:55,973 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 535 transitions. [2022-11-20 12:07:55,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 535 transitions. [2022-11-20 12:07:55,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:07:55,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 535 transitions. [2022-11-20 12:07:55,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 53.5) internal successors, (535), 10 states have internal predecessors, (535), 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 12:07:55,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:55,978 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:55,978 INFO L175 Difference]: Start difference. First operand has 206 places, 139 transitions, 942 flow. Second operand 10 states and 535 transitions. [2022-11-20 12:07:55,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 144 transitions, 1171 flow [2022-11-20 12:07:55,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 144 transitions, 1052 flow, removed 15 selfloop flow, removed 15 redundant places. [2022-11-20 12:07:55,987 INFO L231 Difference]: Finished difference. Result has 179 places, 125 transitions, 813 flow [2022-11-20 12:07:55,988 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=820, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=813, PETRI_PLACES=179, PETRI_TRANSITIONS=125} [2022-11-20 12:07:55,988 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 108 predicate places. [2022-11-20 12:07:55,989 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 125 transitions, 813 flow [2022-11-20 12:07:55,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 51.55555555555556) internal successors, (464), 9 states have internal predecessors, (464), 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 12:07:55,990 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:07:55,990 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 12:07:55,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 12:07:55,991 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:07:55,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:07:55,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1270780837, now seen corresponding path program 2 times [2022-11-20 12:07:55,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:07:55,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927376920] [2022-11-20 12:07:55,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:55,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:07:56,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:56,165 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 12:07:56,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:07:56,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927376920] [2022-11-20 12:07:56,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927376920] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:07:56,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:07:56,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 12:07:56,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931592027] [2022-11-20 12:07:56,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:07:56,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:07:56,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:07:56,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:07:56,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:07:56,169 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 85 [2022-11-20 12:07:56,169 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 125 transitions, 813 flow. Second operand has 9 states, 9 states have (on average 51.55555555555556) internal successors, (464), 9 states have internal predecessors, (464), 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 12:07:56,169 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:07:56,170 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 85 [2022-11-20 12:07:56,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:07:56,386 INFO L130 PetriNetUnfolder]: 51/262 cut-off events. [2022-11-20 12:07:56,386 INFO L131 PetriNetUnfolder]: For 853/855 co-relation queries the response was YES. [2022-11-20 12:07:56,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1021 conditions, 262 events. 51/262 cut-off events. For 853/855 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1105 event pairs, 23 based on Foata normal form. 8/263 useless extension candidates. Maximal degree in co-relation 988. Up to 119 conditions per place. [2022-11-20 12:07:56,388 INFO L137 encePairwiseOnDemand]: 76/85 looper letters, 57 selfloop transitions, 20 changer transitions 25/144 dead transitions. [2022-11-20 12:07:56,389 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 144 transitions, 1150 flow [2022-11-20 12:07:56,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:07:56,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 12:07:56,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 534 transitions. [2022-11-20 12:07:56,390 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6282352941176471 [2022-11-20 12:07:56,391 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 534 transitions. [2022-11-20 12:07:56,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 534 transitions. [2022-11-20 12:07:56,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:07:56,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 534 transitions. [2022-11-20 12:07:56,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 53.4) internal successors, (534), 10 states have internal predecessors, (534), 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 12:07:56,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:56,394 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:56,394 INFO L175 Difference]: Start difference. First operand has 179 places, 125 transitions, 813 flow. Second operand 10 states and 534 transitions. [2022-11-20 12:07:56,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 144 transitions, 1150 flow [2022-11-20 12:07:56,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 144 transitions, 1063 flow, removed 2 selfloop flow, removed 8 redundant places. [2022-11-20 12:07:56,403 INFO L231 Difference]: Finished difference. Result has 170 places, 116 transitions, 750 flow [2022-11-20 12:07:56,403 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=750, PETRI_PLACES=170, PETRI_TRANSITIONS=116} [2022-11-20 12:07:56,404 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 99 predicate places. [2022-11-20 12:07:56,404 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 116 transitions, 750 flow [2022-11-20 12:07:56,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 51.55555555555556) internal successors, (464), 9 states have internal predecessors, (464), 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 12:07:56,405 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:07:56,405 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 12:07:56,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 12:07:56,405 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:07:56,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:07:56,406 INFO L85 PathProgramCache]: Analyzing trace with hash 294420667, now seen corresponding path program 3 times [2022-11-20 12:07:56,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:07:56,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530217363] [2022-11-20 12:07:56,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:56,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:07:56,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:56,577 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 12:07:56,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:07:56,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530217363] [2022-11-20 12:07:56,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530217363] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:07:56,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:07:56,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 12:07:56,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031619927] [2022-11-20 12:07:56,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:07:56,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:07:56,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:07:56,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:07:56,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:07:56,581 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 85 [2022-11-20 12:07:56,581 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 116 transitions, 750 flow. Second operand has 9 states, 9 states have (on average 51.55555555555556) internal successors, (464), 9 states have internal predecessors, (464), 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 12:07:56,581 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:07:56,582 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 85 [2022-11-20 12:07:56,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:07:56,837 INFO L130 PetriNetUnfolder]: 41/216 cut-off events. [2022-11-20 12:07:56,837 INFO L131 PetriNetUnfolder]: For 684/686 co-relation queries the response was YES. [2022-11-20 12:07:56,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 866 conditions, 216 events. 41/216 cut-off events. For 684/686 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 790 event pairs, 12 based on Foata normal form. 8/219 useless extension candidates. Maximal degree in co-relation 828. Up to 75 conditions per place. [2022-11-20 12:07:56,840 INFO L137 encePairwiseOnDemand]: 76/85 looper letters, 42 selfloop transitions, 5 changer transitions 42/127 dead transitions. [2022-11-20 12:07:56,840 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 127 transitions, 993 flow [2022-11-20 12:07:56,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:07:56,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 12:07:56,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 583 transitions. [2022-11-20 12:07:56,842 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6235294117647059 [2022-11-20 12:07:56,842 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 583 transitions. [2022-11-20 12:07:56,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 583 transitions. [2022-11-20 12:07:56,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:07:56,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 583 transitions. [2022-11-20 12:07:56,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 53.0) internal successors, (583), 11 states have internal predecessors, (583), 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 12:07:56,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 85.0) internal successors, (1020), 12 states have internal predecessors, (1020), 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 12:07:56,847 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 85.0) internal successors, (1020), 12 states have internal predecessors, (1020), 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 12:07:56,847 INFO L175 Difference]: Start difference. First operand has 170 places, 116 transitions, 750 flow. Second operand 11 states and 583 transitions. [2022-11-20 12:07:56,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 127 transitions, 993 flow [2022-11-20 12:07:56,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 127 transitions, 901 flow, removed 9 selfloop flow, removed 14 redundant places. [2022-11-20 12:07:56,856 INFO L231 Difference]: Finished difference. Result has 155 places, 84 transitions, 415 flow [2022-11-20 12:07:56,856 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=415, PETRI_PLACES=155, PETRI_TRANSITIONS=84} [2022-11-20 12:07:56,857 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 84 predicate places. [2022-11-20 12:07:56,857 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 84 transitions, 415 flow [2022-11-20 12:07:56,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 51.55555555555556) internal successors, (464), 9 states have internal predecessors, (464), 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 12:07:56,857 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:07:56,858 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 12:07:56,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 12:07:56,858 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:07:56,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:07:56,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1307434553, now seen corresponding path program 4 times [2022-11-20 12:07:56,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:07:56,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340940651] [2022-11-20 12:07:56,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:56,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:07:56,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:57,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:07:57,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:07:57,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340940651] [2022-11-20 12:07:57,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340940651] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:07:57,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:07:57,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 12:07:57,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903194058] [2022-11-20 12:07:57,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:07:57,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:07:57,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:07:57,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:07:57,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:07:57,057 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 85 [2022-11-20 12:07:57,058 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 84 transitions, 415 flow. Second operand has 9 states, 9 states have (on average 51.55555555555556) internal successors, (464), 9 states have internal predecessors, (464), 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 12:07:57,058 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:07:57,058 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 85 [2022-11-20 12:07:57,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:07:57,254 INFO L130 PetriNetUnfolder]: 22/130 cut-off events. [2022-11-20 12:07:57,254 INFO L131 PetriNetUnfolder]: For 231/231 co-relation queries the response was YES. [2022-11-20 12:07:57,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 449 conditions, 130 events. 22/130 cut-off events. For 231/231 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 266 event pairs, 10 based on Foata normal form. 2/129 useless extension candidates. Maximal degree in co-relation 416. Up to 50 conditions per place. [2022-11-20 12:07:57,256 INFO L137 encePairwiseOnDemand]: 76/85 looper letters, 26 selfloop transitions, 14 changer transitions 12/89 dead transitions. [2022-11-20 12:07:57,256 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 89 transitions, 539 flow [2022-11-20 12:07:57,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:07:57,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 12:07:57,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 528 transitions. [2022-11-20 12:07:57,261 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6211764705882353 [2022-11-20 12:07:57,261 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 528 transitions. [2022-11-20 12:07:57,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 528 transitions. [2022-11-20 12:07:57,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:07:57,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 528 transitions. [2022-11-20 12:07:57,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 52.8) internal successors, (528), 10 states have internal predecessors, (528), 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 12:07:57,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:57,268 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:57,268 INFO L175 Difference]: Start difference. First operand has 155 places, 84 transitions, 415 flow. Second operand 10 states and 528 transitions. [2022-11-20 12:07:57,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 89 transitions, 539 flow [2022-11-20 12:07:57,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 89 transitions, 443 flow, removed 18 selfloop flow, removed 22 redundant places. [2022-11-20 12:07:57,272 INFO L231 Difference]: Finished difference. Result has 113 places, 77 transitions, 312 flow [2022-11-20 12:07:57,272 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=312, PETRI_PLACES=113, PETRI_TRANSITIONS=77} [2022-11-20 12:07:57,273 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 42 predicate places. [2022-11-20 12:07:57,274 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 77 transitions, 312 flow [2022-11-20 12:07:57,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 51.55555555555556) internal successors, (464), 9 states have internal predecessors, (464), 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 12:07:57,274 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:07:57,274 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 12:07:57,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 12:07:57,275 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:07:57,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:07:57,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1486445875, now seen corresponding path program 5 times [2022-11-20 12:07:57,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:07:57,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097473894] [2022-11-20 12:07:57,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:57,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:07:57,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:57,497 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 12:07:57,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:07:57,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097473894] [2022-11-20 12:07:57,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097473894] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:07:57,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:07:57,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 12:07:57,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515164284] [2022-11-20 12:07:57,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:07:57,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:07:57,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:07:57,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:07:57,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:07:57,501 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 85 [2022-11-20 12:07:57,502 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 77 transitions, 312 flow. Second operand has 9 states, 9 states have (on average 51.55555555555556) internal successors, (464), 9 states have internal predecessors, (464), 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 12:07:57,502 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:07:57,502 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 85 [2022-11-20 12:07:57,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:07:57,685 INFO L130 PetriNetUnfolder]: 16/104 cut-off events. [2022-11-20 12:07:57,686 INFO L131 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2022-11-20 12:07:57,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 301 conditions, 104 events. 16/104 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 153 event pairs, 6 based on Foata normal form. 2/104 useless extension candidates. Maximal degree in co-relation 283. Up to 26 conditions per place. [2022-11-20 12:07:57,687 INFO L137 encePairwiseOnDemand]: 76/85 looper letters, 23 selfloop transitions, 7 changer transitions 16/81 dead transitions. [2022-11-20 12:07:57,687 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 81 transitions, 408 flow [2022-11-20 12:07:57,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:07:57,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 12:07:57,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 579 transitions. [2022-11-20 12:07:57,689 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6192513368983957 [2022-11-20 12:07:57,689 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 579 transitions. [2022-11-20 12:07:57,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 579 transitions. [2022-11-20 12:07:57,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:07:57,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 579 transitions. [2022-11-20 12:07:57,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 52.63636363636363) internal successors, (579), 11 states have internal predecessors, (579), 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 12:07:57,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 85.0) internal successors, (1020), 12 states have internal predecessors, (1020), 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 12:07:57,693 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 85.0) internal successors, (1020), 12 states have internal predecessors, (1020), 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 12:07:57,693 INFO L175 Difference]: Start difference. First operand has 113 places, 77 transitions, 312 flow. Second operand 11 states and 579 transitions. [2022-11-20 12:07:57,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 81 transitions, 408 flow [2022-11-20 12:07:57,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 81 transitions, 355 flow, removed 4 selfloop flow, removed 10 redundant places. [2022-11-20 12:07:57,697 INFO L231 Difference]: Finished difference. Result has 104 places, 65 transitions, 203 flow [2022-11-20 12:07:57,698 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=203, PETRI_PLACES=104, PETRI_TRANSITIONS=65} [2022-11-20 12:07:57,699 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 33 predicate places. [2022-11-20 12:07:57,699 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 65 transitions, 203 flow [2022-11-20 12:07:57,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 51.55555555555556) internal successors, (464), 9 states have internal predecessors, (464), 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 12:07:57,699 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:07:57,700 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 12:07:57,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 12:07:57,700 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:07:57,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:07:57,700 INFO L85 PathProgramCache]: Analyzing trace with hash -549651739, now seen corresponding path program 6 times [2022-11-20 12:07:57,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:07:57,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899366997] [2022-11-20 12:07:57,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:57,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:07:57,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:57,880 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 12:07:57,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:07:57,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899366997] [2022-11-20 12:07:57,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899366997] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:07:57,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:07:57,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 12:07:57,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595455007] [2022-11-20 12:07:57,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:07:57,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:07:57,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:07:57,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:07:57,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:07:57,884 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 85 [2022-11-20 12:07:57,885 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 65 transitions, 203 flow. Second operand has 9 states, 9 states have (on average 51.55555555555556) internal successors, (464), 9 states have internal predecessors, (464), 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 12:07:57,885 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:07:57,885 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 85 [2022-11-20 12:07:57,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:07:58,070 INFO L130 PetriNetUnfolder]: 9/77 cut-off events. [2022-11-20 12:07:58,070 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-11-20 12:07:58,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 77 events. 9/77 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 46 event pairs, 0 based on Foata normal form. 2/79 useless extension candidates. Maximal degree in co-relation 169. Up to 11 conditions per place. [2022-11-20 12:07:58,070 INFO L137 encePairwiseOnDemand]: 76/85 looper letters, 0 selfloop transitions, 0 changer transitions 68/68 dead transitions. [2022-11-20 12:07:58,071 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 68 transitions, 273 flow [2022-11-20 12:07:58,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 12:07:58,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-20 12:07:58,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 620 transitions. [2022-11-20 12:07:58,072 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6078431372549019 [2022-11-20 12:07:58,073 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 620 transitions. [2022-11-20 12:07:58,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 620 transitions. [2022-11-20 12:07:58,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:07:58,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 620 transitions. [2022-11-20 12:07:58,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 51.666666666666664) internal successors, (620), 12 states have internal predecessors, (620), 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 12:07:58,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 85.0) internal successors, (1105), 13 states have internal predecessors, (1105), 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 12:07:58,076 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 85.0) internal successors, (1105), 13 states have internal predecessors, (1105), 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 12:07:58,076 INFO L175 Difference]: Start difference. First operand has 104 places, 65 transitions, 203 flow. Second operand 12 states and 620 transitions. [2022-11-20 12:07:58,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 68 transitions, 273 flow [2022-11-20 12:07:58,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 68 transitions, 223 flow, removed 5 selfloop flow, removed 15 redundant places. [2022-11-20 12:07:58,078 INFO L231 Difference]: Finished difference. Result has 84 places, 0 transitions, 0 flow [2022-11-20 12:07:58,078 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=84, PETRI_TRANSITIONS=0} [2022-11-20 12:07:58,078 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 13 predicate places. [2022-11-20 12:07:58,078 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 0 transitions, 0 flow [2022-11-20 12:07:58,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 51.55555555555556) internal successors, (464), 9 states have internal predecessors, (464), 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 12:07:58,084 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 7 remaining) [2022-11-20 12:07:58,085 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 7 remaining) [2022-11-20 12:07:58,085 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2022-11-20 12:07:58,085 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 7 remaining) [2022-11-20 12:07:58,085 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 7 remaining) [2022-11-20 12:07:58,085 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 7 remaining) [2022-11-20 12:07:58,086 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 7 remaining) [2022-11-20 12:07:58,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-20 12:07:58,086 INFO L444 BasicCegarLoop]: Path program histogram: [8, 6, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:07:58,094 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 12:07:58,094 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 12:07:58,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 12:07:58 BasicIcfg [2022-11-20 12:07:58,099 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 12:07:58,100 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 12:07:58,100 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 12:07:58,100 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 12:07:58,101 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:07:39" (3/4) ... [2022-11-20 12:07:58,104 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 12:07:58,110 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-11-20 12:07:58,116 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2022-11-20 12:07:58,116 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-20 12:07:58,117 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 12:07:58,156 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a368fbf2-0555-4705-9ba5-697cb02c9fd1/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 12:07:58,156 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 12:07:58,157 INFO L158 Benchmark]: Toolchain (without parser) took 20239.72ms. Allocated memory was 148.9MB in the beginning and 314.6MB in the end (delta: 165.7MB). Free memory was 107.9MB in the beginning and 233.9MB in the end (delta: -126.0MB). Peak memory consumption was 39.0MB. Max. memory is 16.1GB. [2022-11-20 12:07:58,157 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 111.1MB. Free memory is still 82.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:07:58,157 INFO L158 Benchmark]: CACSL2BoogieTranslator took 849.98ms. Allocated memory is still 148.9MB. Free memory was 107.9MB in the beginning and 102.3MB in the end (delta: 5.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 12:07:58,158 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.66ms. Allocated memory is still 148.9MB. Free memory was 102.3MB in the beginning and 100.0MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:07:58,158 INFO L158 Benchmark]: Boogie Preprocessor took 59.32ms. Allocated memory is still 148.9MB. Free memory was 100.0MB in the beginning and 98.1MB in the end (delta: 1.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 12:07:58,158 INFO L158 Benchmark]: RCFGBuilder took 543.10ms. Allocated memory is still 148.9MB. Free memory was 98.1MB in the beginning and 84.2MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 12:07:58,159 INFO L158 Benchmark]: TraceAbstraction took 18646.43ms. Allocated memory was 148.9MB in the beginning and 314.6MB in the end (delta: 165.7MB). Free memory was 83.5MB in the beginning and 236.1MB in the end (delta: -152.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-20 12:07:58,159 INFO L158 Benchmark]: Witness Printer took 56.36ms. Allocated memory is still 314.6MB. Free memory was 236.1MB in the beginning and 233.9MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:07:58,163 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 111.1MB. Free memory is still 82.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 849.98ms. Allocated memory is still 148.9MB. Free memory was 107.9MB in the beginning and 102.3MB in the end (delta: 5.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 77.66ms. Allocated memory is still 148.9MB. Free memory was 102.3MB in the beginning and 100.0MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 59.32ms. Allocated memory is still 148.9MB. Free memory was 100.0MB in the beginning and 98.1MB in the end (delta: 1.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 543.10ms. Allocated memory is still 148.9MB. Free memory was 98.1MB in the beginning and 84.2MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 18646.43ms. Allocated memory was 148.9MB in the beginning and 314.6MB in the end (delta: 165.7MB). Free memory was 83.5MB in the beginning and 236.1MB in the end (delta: -152.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 56.36ms. Allocated memory is still 314.6MB. Free memory was 236.1MB in the beginning and 233.9MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 936]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 936]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 924]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 924]: 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, 103 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: 18.5s, OverallIterations: 21, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 11.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2136 SdHoareTripleChecker+Valid, 3.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2136 mSDsluCounter, 2940 SdHoareTripleChecker+Invalid, 2.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2506 mSDsCounter, 77 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4425 IncrementalHoareTripleChecker+Invalid, 4502 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 77 mSolverCounterUnsat, 434 mSDtfsCounter, 4425 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 557 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 524 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3228 ImplicationChecksByTransitivity, 7.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1289occurred in iteration=13, InterpolantAutomatonStates: 389, 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, 1113 NumberOfCodeBlocks, 1113 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 1092 ConstructedInterpolants, 0 QuantifiedInterpolants, 4766 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 21 InterpolantComputations, 21 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 12:07:58,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a368fbf2-0555-4705-9ba5-697cb02c9fd1/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