./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/queue_longer.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_306d4302-c553-4b70-b520-372b7289b858/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_306d4302-c553-4b70-b520-372b7289b858/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_306d4302-c553-4b70-b520-372b7289b858/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_306d4302-c553-4b70-b520-372b7289b858/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/queue_longer.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_306d4302-c553-4b70-b520-372b7289b858/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_306d4302-c553-4b70-b520-372b7289b858/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 9f874a9872f93f025fac23ebed37f94a1f3b80bd0133ea4d7e298577c4fec427 --- 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 11:53:44,128 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:53:44,131 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:53:44,155 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:53:44,156 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:53:44,159 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:53:44,162 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:53:44,165 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:53:44,170 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:53:44,175 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:53:44,177 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:53:44,179 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:53:44,179 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:53:44,182 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:53:44,184 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:53:44,186 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:53:44,188 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:53:44,189 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:53:44,192 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:53:44,198 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:53:44,200 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:53:44,202 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:53:44,204 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:53:44,205 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:53:44,215 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:53:44,216 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:53:44,216 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:53:44,218 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:53:44,220 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:53:44,221 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:53:44,221 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:53:44,222 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:53:44,224 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:53:44,226 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:53:44,227 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:53:44,227 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:53:44,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:53:44,228 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:53:44,228 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:53:44,230 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:53:44,231 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:53:44,233 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_306d4302-c553-4b70-b520-372b7289b858/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 11:53:44,269 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:53:44,270 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:53:44,271 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:53:44,271 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:53:44,272 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:53:44,272 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:53:44,273 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:53:44,274 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:53:44,274 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:53:44,274 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:53:44,275 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:53:44,276 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:53:44,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:53:44,277 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:53:44,277 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:53:44,277 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:53:44,277 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:53:44,278 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:53:44,278 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 11:53:44,278 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:53:44,278 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:53:44,279 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:53:44,279 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:53:44,279 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:53:44,280 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:53:44,280 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:53:44,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:53:44,281 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:53:44,281 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:53:44,281 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:53:44,281 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:53:44,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:53:44,282 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:53:44,282 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:53:44,282 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:53:44,283 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_306d4302-c553-4b70-b520-372b7289b858/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_306d4302-c553-4b70-b520-372b7289b858/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f874a9872f93f025fac23ebed37f94a1f3b80bd0133ea4d7e298577c4fec427 [2022-11-20 11:53:44,612 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:53:44,634 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:53:44,637 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:53:44,638 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:53:44,639 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:53:44,640 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_306d4302-c553-4b70-b520-372b7289b858/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/pthread/queue_longer.i [2022-11-20 11:53:47,719 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:53:48,000 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:53:48,000 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_306d4302-c553-4b70-b520-372b7289b858/sv-benchmarks/c/pthread/queue_longer.i [2022-11-20 11:53:48,033 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_306d4302-c553-4b70-b520-372b7289b858/bin/uautomizer-ug76WZFUDN/data/f33a7a5bf/c3faaaa985e143bc94ead005d11c8c7f/FLAG77a426bc4 [2022-11-20 11:53:48,054 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_306d4302-c553-4b70-b520-372b7289b858/bin/uautomizer-ug76WZFUDN/data/f33a7a5bf/c3faaaa985e143bc94ead005d11c8c7f [2022-11-20 11:53:48,061 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:53:48,062 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:53:48,067 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:53:48,067 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:53:48,072 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:53:48,072 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:53:48" (1/1) ... [2022-11-20 11:53:48,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12936d14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:48, skipping insertion in model container [2022-11-20 11:53:48,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:53:48" (1/1) ... [2022-11-20 11:53:48,083 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:53:48,152 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:53:48,693 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_306d4302-c553-4b70-b520-372b7289b858/sv-benchmarks/c/pthread/queue_longer.i[43296,43309] [2022-11-20 11:53:48,697 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_306d4302-c553-4b70-b520-372b7289b858/sv-benchmarks/c/pthread/queue_longer.i[43503,43516] [2022-11-20 11:53:48,700 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_306d4302-c553-4b70-b520-372b7289b858/sv-benchmarks/c/pthread/queue_longer.i[43783,43796] [2022-11-20 11:53:48,705 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:53:48,717 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:53:48,763 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_306d4302-c553-4b70-b520-372b7289b858/sv-benchmarks/c/pthread/queue_longer.i[43296,43309] [2022-11-20 11:53:48,765 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_306d4302-c553-4b70-b520-372b7289b858/sv-benchmarks/c/pthread/queue_longer.i[43503,43516] [2022-11-20 11:53:48,768 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_306d4302-c553-4b70-b520-372b7289b858/sv-benchmarks/c/pthread/queue_longer.i[43783,43796] [2022-11-20 11:53:48,771 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:53:48,827 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:53:48,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:48 WrapperNode [2022-11-20 11:53:48,828 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:53:48,830 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:53:48,830 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:53:48,830 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:53:48,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:48" (1/1) ... [2022-11-20 11:53:48,856 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:48" (1/1) ... [2022-11-20 11:53:48,908 INFO L138 Inliner]: procedures = 274, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 259 [2022-11-20 11:53:48,909 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:53:48,910 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:53:48,910 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:53:48,910 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:53:48,920 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:48" (1/1) ... [2022-11-20 11:53:48,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:48" (1/1) ... [2022-11-20 11:53:48,925 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:48" (1/1) ... [2022-11-20 11:53:48,925 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:48" (1/1) ... [2022-11-20 11:53:48,951 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:48" (1/1) ... [2022-11-20 11:53:48,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:48" (1/1) ... [2022-11-20 11:53:48,957 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:48" (1/1) ... [2022-11-20 11:53:48,959 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:48" (1/1) ... [2022-11-20 11:53:48,963 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:53:48,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:53:48,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:53:48,964 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:53:48,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:48" (1/1) ... [2022-11-20 11:53:48,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:53:48,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_306d4302-c553-4b70-b520-372b7289b858/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:53:49,002 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_306d4302-c553-4b70-b520-372b7289b858/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:53:49,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_306d4302-c553-4b70-b520-372b7289b858/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:53:49,043 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-20 11:53:49,043 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-20 11:53:49,044 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-20 11:53:49,044 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-20 11:53:49,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:53:49,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:53:49,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:53:49,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:53:49,044 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 11:53:49,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:53:49,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:53:49,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:53:49,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:53:49,046 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 11:53:49,198 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:53:49,221 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:53:49,751 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:53:49,761 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:53:49,761 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 11:53:49,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:53:49 BoogieIcfgContainer [2022-11-20 11:53:49,769 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:53:49,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:53:49,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:53:49,777 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:53:49,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:53:48" (1/3) ... [2022-11-20 11:53:49,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2021609d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:53:49, skipping insertion in model container [2022-11-20 11:53:49,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:48" (2/3) ... [2022-11-20 11:53:49,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2021609d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:53:49, skipping insertion in model container [2022-11-20 11:53:49,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:53:49" (3/3) ... [2022-11-20 11:53:49,785 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longer.i [2022-11-20 11:53:49,795 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:53:49,806 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:53:49,807 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-20 11:53:49,808 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:53:49,998 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 11:53:50,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 297 places, 305 transitions, 626 flow [2022-11-20 11:53:50,235 INFO L130 PetriNetUnfolder]: 15/303 cut-off events. [2022-11-20 11:53:50,235 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 11:53:50,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 303 events. 15/303 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 469 event pairs, 0 based on Foata normal form. 0/270 useless extension candidates. Maximal degree in co-relation 223. Up to 2 conditions per place. [2022-11-20 11:53:50,248 INFO L82 GeneralOperation]: Start removeDead. Operand has 297 places, 305 transitions, 626 flow [2022-11-20 11:53:50,260 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 285 places, 293 transitions, 595 flow [2022-11-20 11:53:50,279 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:53:50,285 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;@61e6359c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:53:50,286 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2022-11-20 11:53:50,320 INFO L130 PetriNetUnfolder]: 3/110 cut-off events. [2022-11-20 11:53:50,320 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:53:50,321 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:53:50,322 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:53:50,322 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 11:53:50,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:53:50,328 INFO L85 PathProgramCache]: Analyzing trace with hash 2062797442, now seen corresponding path program 1 times [2022-11-20 11:53:50,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:53:50,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267257075] [2022-11-20 11:53:50,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:53:50,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:53:50,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:51,812 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 11:53:51,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:53:51,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267257075] [2022-11-20 11:53:51,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267257075] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:53:51,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:53:51,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 11:53:51,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132622844] [2022-11-20 11:53:51,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:53:51,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:53:51,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:53:51,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:53:51,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:53:51,899 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 305 [2022-11-20 11:53:51,909 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 293 transitions, 595 flow. Second operand has 12 states, 12 states have (on average 230.33333333333334) internal successors, (2764), 12 states have internal predecessors, (2764), 0 states have call successors, (0), 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 11:53:51,909 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:53:51,909 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 305 [2022-11-20 11:53:51,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:53:53,655 INFO L130 PetriNetUnfolder]: 1003/4825 cut-off events. [2022-11-20 11:53:53,655 INFO L131 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2022-11-20 11:53:53,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6349 conditions, 4825 events. 1003/4825 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 42086 event pairs, 789 based on Foata normal form. 203/4356 useless extension candidates. Maximal degree in co-relation 6146. Up to 1435 conditions per place. [2022-11-20 11:53:53,694 INFO L137 encePairwiseOnDemand]: 287/305 looper letters, 52 selfloop transitions, 12 changer transitions 0/279 dead transitions. [2022-11-20 11:53:53,694 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 279 transitions, 695 flow [2022-11-20 11:53:53,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:53:53,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 11:53:53,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3034 transitions. [2022-11-20 11:53:53,723 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7651954602774275 [2022-11-20 11:53:53,724 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3034 transitions. [2022-11-20 11:53:53,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3034 transitions. [2022-11-20 11:53:53,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:53:53,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3034 transitions. [2022-11-20 11:53:53,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 233.3846153846154) internal successors, (3034), 13 states have internal predecessors, (3034), 0 states have call successors, (0), 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 11:53:53,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 305.0) internal successors, (4270), 14 states have internal predecessors, (4270), 0 states have call successors, (0), 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 11:53:53,764 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 305.0) internal successors, (4270), 14 states have internal predecessors, (4270), 0 states have call successors, (0), 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 11:53:53,766 INFO L175 Difference]: Start difference. First operand has 285 places, 293 transitions, 595 flow. Second operand 13 states and 3034 transitions. [2022-11-20 11:53:53,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 279 transitions, 695 flow [2022-11-20 11:53:53,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 279 transitions, 690 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:53:53,783 INFO L231 Difference]: Finished difference. Result has 286 places, 279 transitions, 586 flow [2022-11-20 11:53:53,786 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=586, PETRI_PLACES=286, PETRI_TRANSITIONS=279} [2022-11-20 11:53:53,792 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 1 predicate places. [2022-11-20 11:53:53,793 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 279 transitions, 586 flow [2022-11-20 11:53:53,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 230.33333333333334) internal successors, (2764), 12 states have internal predecessors, (2764), 0 states have call successors, (0), 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 11:53:53,795 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:53:53,795 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:53:53,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:53:53,796 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 11:53:53,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:53:53,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1991466801, now seen corresponding path program 1 times [2022-11-20 11:53:53,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:53:53,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162244282] [2022-11-20 11:53:53,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:53:53,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:53:53,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:53,987 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 11:53:53,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:53:53,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162244282] [2022-11-20 11:53:53,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162244282] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:53:53,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:53:53,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:53:53,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282608122] [2022-11-20 11:53:53,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:53:53,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:53:53,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:53:53,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:53:54,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:53:54,005 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 305 [2022-11-20 11:53:54,006 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 279 transitions, 586 flow. Second operand has 4 states, 4 states have (on average 281.75) internal successors, (1127), 4 states have internal predecessors, (1127), 0 states have call successors, (0), 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 11:53:54,007 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:53:54,007 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 305 [2022-11-20 11:53:54,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:53:54,165 INFO L130 PetriNetUnfolder]: 34/483 cut-off events. [2022-11-20 11:53:54,166 INFO L131 PetriNetUnfolder]: For 19/20 co-relation queries the response was YES. [2022-11-20 11:53:54,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 560 conditions, 483 events. 34/483 cut-off events. For 19/20 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1764 event pairs, 3 based on Foata normal form. 0/415 useless extension candidates. Maximal degree in co-relation 485. Up to 39 conditions per place. [2022-11-20 11:53:54,171 INFO L137 encePairwiseOnDemand]: 298/305 looper letters, 21 selfloop transitions, 4 changer transitions 0/289 dead transitions. [2022-11-20 11:53:54,171 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 289 transitions, 659 flow [2022-11-20 11:53:54,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:53:54,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:53:54,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1428 transitions. [2022-11-20 11:53:54,175 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9363934426229508 [2022-11-20 11:53:54,175 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1428 transitions. [2022-11-20 11:53:54,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1428 transitions. [2022-11-20 11:53:54,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:53:54,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1428 transitions. [2022-11-20 11:53:54,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 285.6) internal successors, (1428), 5 states have internal predecessors, (1428), 0 states have call successors, (0), 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 11:53:54,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 states have internal predecessors, (1830), 0 states have call successors, (0), 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 11:53:54,184 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 states have internal predecessors, (1830), 0 states have call successors, (0), 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 11:53:54,184 INFO L175 Difference]: Start difference. First operand has 286 places, 279 transitions, 586 flow. Second operand 5 states and 1428 transitions. [2022-11-20 11:53:54,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 289 transitions, 659 flow [2022-11-20 11:53:54,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 289 transitions, 636 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-11-20 11:53:54,193 INFO L231 Difference]: Finished difference. Result has 282 places, 282 transitions, 595 flow [2022-11-20 11:53:54,194 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=595, PETRI_PLACES=282, PETRI_TRANSITIONS=282} [2022-11-20 11:53:54,195 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, -3 predicate places. [2022-11-20 11:53:54,195 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 282 transitions, 595 flow [2022-11-20 11:53:54,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 281.75) internal successors, (1127), 4 states have internal predecessors, (1127), 0 states have call successors, (0), 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 11:53:54,196 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:53:54,197 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, 1, 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 11:53:54,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:53:54,197 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 11:53:54,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:53:54,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1277169439, now seen corresponding path program 1 times [2022-11-20 11:53:54,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:53:54,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844103669] [2022-11-20 11:53:54,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:53:54,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:53:54,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:05,878 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 11:54:05,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:05,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844103669] [2022-11-20 11:54:05,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844103669] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:05,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:05,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-20 11:54:05,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711600985] [2022-11-20 11:54:05,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:05,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:54:05,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:05,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:54:05,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:54:05,886 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 305 [2022-11-20 11:54:05,894 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 282 transitions, 595 flow. Second operand has 19 states, 19 states have (on average 211.78947368421052) internal successors, (4024), 19 states have internal predecessors, (4024), 0 states have call successors, (0), 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 11:54:05,894 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:05,894 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 305 [2022-11-20 11:54:05,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:54:15,302 INFO L130 PetriNetUnfolder]: 3593/11407 cut-off events. [2022-11-20 11:54:15,303 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-11-20 11:54:15,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17278 conditions, 11407 events. 3593/11407 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 112241 event pairs, 2883 based on Foata normal form. 0/10030 useless extension candidates. Maximal degree in co-relation 17187. Up to 4855 conditions per place. [2022-11-20 11:54:15,394 INFO L137 encePairwiseOnDemand]: 284/305 looper letters, 119 selfloop transitions, 27 changer transitions 0/345 dead transitions. [2022-11-20 11:54:15,394 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 345 transitions, 1019 flow [2022-11-20 11:54:15,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 11:54:15,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-20 11:54:15,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4350 transitions. [2022-11-20 11:54:15,405 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7131147540983607 [2022-11-20 11:54:15,405 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4350 transitions. [2022-11-20 11:54:15,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4350 transitions. [2022-11-20 11:54:15,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:54:15,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4350 transitions. [2022-11-20 11:54:15,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 217.5) internal successors, (4350), 20 states have internal predecessors, (4350), 0 states have call successors, (0), 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 11:54:15,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 305.0) internal successors, (6405), 21 states have internal predecessors, (6405), 0 states have call successors, (0), 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 11:54:15,432 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 305.0) internal successors, (6405), 21 states have internal predecessors, (6405), 0 states have call successors, (0), 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 11:54:15,433 INFO L175 Difference]: Start difference. First operand has 282 places, 282 transitions, 595 flow. Second operand 20 states and 4350 transitions. [2022-11-20 11:54:15,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 345 transitions, 1019 flow [2022-11-20 11:54:15,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 345 transitions, 1017 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:54:15,444 INFO L231 Difference]: Finished difference. Result has 309 places, 303 transitions, 750 flow [2022-11-20 11:54:15,445 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=750, PETRI_PLACES=309, PETRI_TRANSITIONS=303} [2022-11-20 11:54:15,447 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 24 predicate places. [2022-11-20 11:54:15,447 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 303 transitions, 750 flow [2022-11-20 11:54:15,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 211.78947368421052) internal successors, (4024), 19 states have internal predecessors, (4024), 0 states have call successors, (0), 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 11:54:15,449 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:15,450 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, 1, 1, 1, 1, 1, 1, 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 11:54:15,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:54:15,450 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 11:54:15,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:15,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1336554938, now seen corresponding path program 1 times [2022-11-20 11:54:15,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:15,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176286963] [2022-11-20 11:54:15,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:15,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:15,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:17,785 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 11:54:17,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:17,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176286963] [2022-11-20 11:54:17,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176286963] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:17,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:17,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:54:17,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021031034] [2022-11-20 11:54:17,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:17,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:54:17,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:17,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:54:17,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:54:17,796 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 305 [2022-11-20 11:54:17,800 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 303 transitions, 750 flow. Second operand has 20 states, 20 states have (on average 203.1) internal successors, (4062), 20 states have internal predecessors, (4062), 0 states have call successors, (0), 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 11:54:17,800 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:17,800 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 305 [2022-11-20 11:54:17,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:54:22,253 INFO L130 PetriNetUnfolder]: 4210/14679 cut-off events. [2022-11-20 11:54:22,253 INFO L131 PetriNetUnfolder]: For 1230/1234 co-relation queries the response was YES. [2022-11-20 11:54:22,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23085 conditions, 14679 events. 4210/14679 cut-off events. For 1230/1234 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 153684 event pairs, 964 based on Foata normal form. 102/13199 useless extension candidates. Maximal degree in co-relation 22970. Up to 4446 conditions per place. [2022-11-20 11:54:22,354 INFO L137 encePairwiseOnDemand]: 283/305 looper letters, 190 selfloop transitions, 44 changer transitions 0/426 dead transitions. [2022-11-20 11:54:22,355 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 426 transitions, 1522 flow [2022-11-20 11:54:22,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 11:54:22,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-20 11:54:22,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4644 transitions. [2022-11-20 11:54:22,365 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6921013412816691 [2022-11-20 11:54:22,365 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4644 transitions. [2022-11-20 11:54:22,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4644 transitions. [2022-11-20 11:54:22,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:54:22,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4644 transitions. [2022-11-20 11:54:22,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 211.0909090909091) internal successors, (4644), 22 states have internal predecessors, (4644), 0 states have call successors, (0), 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 11:54:22,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 305.0) internal successors, (7015), 23 states have internal predecessors, (7015), 0 states have call successors, (0), 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 11:54:22,392 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 305.0) internal successors, (7015), 23 states have internal predecessors, (7015), 0 states have call successors, (0), 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 11:54:22,392 INFO L175 Difference]: Start difference. First operand has 309 places, 303 transitions, 750 flow. Second operand 22 states and 4644 transitions. [2022-11-20 11:54:22,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 426 transitions, 1522 flow [2022-11-20 11:54:22,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 426 transitions, 1509 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-20 11:54:22,413 INFO L231 Difference]: Finished difference. Result has 330 places, 332 transitions, 995 flow [2022-11-20 11:54:22,414 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=737, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=995, PETRI_PLACES=330, PETRI_TRANSITIONS=332} [2022-11-20 11:54:22,414 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 45 predicate places. [2022-11-20 11:54:22,415 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 332 transitions, 995 flow [2022-11-20 11:54:22,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 203.1) internal successors, (4062), 20 states have internal predecessors, (4062), 0 states have call successors, (0), 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 11:54:22,417 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:22,417 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:54:22,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:54:22,418 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 11:54:22,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:22,418 INFO L85 PathProgramCache]: Analyzing trace with hash 449135622, now seen corresponding path program 1 times [2022-11-20 11:54:22,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:22,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833407121] [2022-11-20 11:54:22,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:22,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:22,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:22,483 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:54:22,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:22,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833407121] [2022-11-20 11:54:22,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833407121] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:22,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:22,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:54:22,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864198018] [2022-11-20 11:54:22,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:22,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:54:22,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:22,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:54:22,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:54:22,487 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 305 [2022-11-20 11:54:22,489 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 332 transitions, 995 flow. Second operand has 4 states, 4 states have (on average 283.25) internal successors, (1133), 4 states have internal predecessors, (1133), 0 states have call successors, (0), 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 11:54:22,489 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:22,490 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 305 [2022-11-20 11:54:22,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:54:22,883 INFO L130 PetriNetUnfolder]: 168/2271 cut-off events. [2022-11-20 11:54:22,883 INFO L131 PetriNetUnfolder]: For 258/259 co-relation queries the response was YES. [2022-11-20 11:54:22,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3089 conditions, 2271 events. 168/2271 cut-off events. For 258/259 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 19823 event pairs, 18 based on Foata normal form. 19/2042 useless extension candidates. Maximal degree in co-relation 2996. Up to 147 conditions per place. [2022-11-20 11:54:23,028 INFO L137 encePairwiseOnDemand]: 299/305 looper letters, 13 selfloop transitions, 8 changer transitions 0/335 dead transitions. [2022-11-20 11:54:23,028 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 335 transitions, 1044 flow [2022-11-20 11:54:23,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:54:23,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:54:23,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1419 transitions. [2022-11-20 11:54:23,032 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9304918032786885 [2022-11-20 11:54:23,032 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1419 transitions. [2022-11-20 11:54:23,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1419 transitions. [2022-11-20 11:54:23,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:54:23,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1419 transitions. [2022-11-20 11:54:23,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 283.8) internal successors, (1419), 5 states have internal predecessors, (1419), 0 states have call successors, (0), 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 11:54:23,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 states have internal predecessors, (1830), 0 states have call successors, (0), 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 11:54:23,039 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 states have internal predecessors, (1830), 0 states have call successors, (0), 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 11:54:23,039 INFO L175 Difference]: Start difference. First operand has 330 places, 332 transitions, 995 flow. Second operand 5 states and 1419 transitions. [2022-11-20 11:54:23,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 335 transitions, 1044 flow [2022-11-20 11:54:23,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 335 transitions, 1011 flow, removed 9 selfloop flow, removed 8 redundant places. [2022-11-20 11:54:23,054 INFO L231 Difference]: Finished difference. Result has 326 places, 332 transitions, 982 flow [2022-11-20 11:54:23,055 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=958, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=982, PETRI_PLACES=326, PETRI_TRANSITIONS=332} [2022-11-20 11:54:23,057 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 41 predicate places. [2022-11-20 11:54:23,058 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 332 transitions, 982 flow [2022-11-20 11:54:23,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 283.25) internal successors, (1133), 4 states have internal predecessors, (1133), 0 states have call successors, (0), 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 11:54:23,058 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:23,059 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:54:23,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:54:23,059 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 11:54:23,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:23,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1038303261, now seen corresponding path program 1 times [2022-11-20 11:54:23,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:23,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041378671] [2022-11-20 11:54:23,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:23,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:23,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:23,167 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:54:23,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:23,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041378671] [2022-11-20 11:54:23,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041378671] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:54:23,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003429130] [2022-11-20 11:54:23,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:23,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:54:23,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_306d4302-c553-4b70-b520-372b7289b858/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:54:23,175 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_306d4302-c553-4b70-b520-372b7289b858/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:54:23,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_306d4302-c553-4b70-b520-372b7289b858/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:54:23,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:23,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:54:23,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:54:23,402 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:54:23,402 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:54:23,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003429130] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:23,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:54:23,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 11:54:23,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066104055] [2022-11-20 11:54:23,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:23,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:54:23,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:23,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:54:23,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:54:23,407 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 305 [2022-11-20 11:54:23,409 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 332 transitions, 982 flow. Second operand has 6 states, 6 states have (on average 282.3333333333333) internal successors, (1694), 6 states have internal predecessors, (1694), 0 states have call successors, (0), 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 11:54:23,409 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:23,409 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 305 [2022-11-20 11:54:23,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:54:23,902 INFO L130 PetriNetUnfolder]: 166/2252 cut-off events. [2022-11-20 11:54:23,902 INFO L131 PetriNetUnfolder]: For 402/403 co-relation queries the response was YES. [2022-11-20 11:54:23,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3165 conditions, 2252 events. 166/2252 cut-off events. For 402/403 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 19518 event pairs, 3 based on Foata normal form. 19/2026 useless extension candidates. Maximal degree in co-relation 3079. Up to 99 conditions per place. [2022-11-20 11:54:23,925 INFO L137 encePairwiseOnDemand]: 300/305 looper letters, 19 selfloop transitions, 6 changer transitions 0/339 dead transitions. [2022-11-20 11:54:23,926 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 339 transitions, 1049 flow [2022-11-20 11:54:23,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:54:23,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:54:23,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1986 transitions. [2022-11-20 11:54:23,930 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9302107728337237 [2022-11-20 11:54:23,931 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1986 transitions. [2022-11-20 11:54:23,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1986 transitions. [2022-11-20 11:54:23,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:54:23,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1986 transitions. [2022-11-20 11:54:23,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 283.7142857142857) internal successors, (1986), 7 states have internal predecessors, (1986), 0 states have call successors, (0), 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 11:54:23,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 305.0) internal successors, (2440), 8 states have internal predecessors, (2440), 0 states have call successors, (0), 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 11:54:23,941 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 305.0) internal successors, (2440), 8 states have internal predecessors, (2440), 0 states have call successors, (0), 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 11:54:23,941 INFO L175 Difference]: Start difference. First operand has 326 places, 332 transitions, 982 flow. Second operand 7 states and 1986 transitions. [2022-11-20 11:54:23,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 339 transitions, 1049 flow [2022-11-20 11:54:23,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 339 transitions, 1037 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:54:23,952 INFO L231 Difference]: Finished difference. Result has 328 places, 331 transitions, 978 flow [2022-11-20 11:54:23,952 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=966, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=978, PETRI_PLACES=328, PETRI_TRANSITIONS=331} [2022-11-20 11:54:23,953 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 43 predicate places. [2022-11-20 11:54:23,954 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 331 transitions, 978 flow [2022-11-20 11:54:23,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 282.3333333333333) internal successors, (1694), 6 states have internal predecessors, (1694), 0 states have call successors, (0), 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 11:54:23,955 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:23,955 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:54:23,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_306d4302-c553-4b70-b520-372b7289b858/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:54:24,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_306d4302-c553-4b70-b520-372b7289b858/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:54:24,162 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 11:54:24,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:24,163 INFO L85 PathProgramCache]: Analyzing trace with hash 450066360, now seen corresponding path program 1 times [2022-11-20 11:54:24,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:24,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785484720] [2022-11-20 11:54:24,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:24,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:24,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:24,306 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 11:54:24,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:24,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785484720] [2022-11-20 11:54:24,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785484720] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:24,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:24,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:54:24,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755141314] [2022-11-20 11:54:24,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:24,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:54:24,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:24,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:54:24,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:54:24,310 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 305 [2022-11-20 11:54:24,310 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 331 transitions, 978 flow. Second operand has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 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 11:54:24,311 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:24,311 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 305 [2022-11-20 11:54:24,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:54:24,528 INFO L130 PetriNetUnfolder]: 71/1163 cut-off events. [2022-11-20 11:54:24,529 INFO L131 PetriNetUnfolder]: For 121/122 co-relation queries the response was YES. [2022-11-20 11:54:24,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1459 conditions, 1163 events. 71/1163 cut-off events. For 121/122 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4940 event pairs, 5 based on Foata normal form. 0/1014 useless extension candidates. Maximal degree in co-relation 1436. Up to 38 conditions per place. [2022-11-20 11:54:24,538 INFO L137 encePairwiseOnDemand]: 301/305 looper letters, 10 selfloop transitions, 3 changer transitions 0/304 dead transitions. [2022-11-20 11:54:24,538 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 304 transitions, 851 flow [2022-11-20 11:54:24,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:54:24,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:54:24,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 872 transitions. [2022-11-20 11:54:24,541 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9530054644808743 [2022-11-20 11:54:24,541 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 872 transitions. [2022-11-20 11:54:24,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 872 transitions. [2022-11-20 11:54:24,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:54:24,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 872 transitions. [2022-11-20 11:54:24,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 290.6666666666667) internal successors, (872), 3 states have internal predecessors, (872), 0 states have call successors, (0), 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 11:54:24,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 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 11:54:24,546 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 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 11:54:24,546 INFO L175 Difference]: Start difference. First operand has 328 places, 331 transitions, 978 flow. Second operand 3 states and 872 transitions. [2022-11-20 11:54:24,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 304 transitions, 851 flow [2022-11-20 11:54:24,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 304 transitions, 767 flow, removed 2 selfloop flow, removed 21 redundant places. [2022-11-20 11:54:24,553 INFO L231 Difference]: Finished difference. Result has 305 places, 301 transitions, 745 flow [2022-11-20 11:54:24,554 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=745, PETRI_PLACES=305, PETRI_TRANSITIONS=301} [2022-11-20 11:54:24,554 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 20 predicate places. [2022-11-20 11:54:24,554 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 301 transitions, 745 flow [2022-11-20 11:54:24,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 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 11:54:24,555 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:24,555 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:54:24,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:54:24,555 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 11:54:24,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:24,556 INFO L85 PathProgramCache]: Analyzing trace with hash -63631832, now seen corresponding path program 1 times [2022-11-20 11:54:24,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:24,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866799323] [2022-11-20 11:54:24,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:24,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:24,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:28,656 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 11:54:28,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:28,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866799323] [2022-11-20 11:54:28,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866799323] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:28,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:28,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-20 11:54:28,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753369352] [2022-11-20 11:54:28,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:28,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:54:28,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:28,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:54:28,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:54:28,664 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 305 [2022-11-20 11:54:28,670 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 301 transitions, 745 flow. Second operand has 18 states, 18 states have (on average 212.05555555555554) internal successors, (3817), 18 states have internal predecessors, (3817), 0 states have call successors, (0), 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 11:54:28,670 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:28,670 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 305 [2022-11-20 11:54:28,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:54:32,125 INFO L130 PetriNetUnfolder]: 1698/7570 cut-off events. [2022-11-20 11:54:32,125 INFO L131 PetriNetUnfolder]: For 347/351 co-relation queries the response was YES. [2022-11-20 11:54:32,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11339 conditions, 7570 events. 1698/7570 cut-off events. For 347/351 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 70369 event pairs, 1402 based on Foata normal form. 2/6779 useless extension candidates. Maximal degree in co-relation 11322. Up to 2632 conditions per place. [2022-11-20 11:54:32,173 INFO L137 encePairwiseOnDemand]: 283/305 looper letters, 92 selfloop transitions, 33 changer transitions 0/326 dead transitions. [2022-11-20 11:54:32,173 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 326 transitions, 1061 flow [2022-11-20 11:54:32,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 11:54:32,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-20 11:54:32,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4324 transitions. [2022-11-20 11:54:32,182 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7088524590163935 [2022-11-20 11:54:32,182 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4324 transitions. [2022-11-20 11:54:32,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4324 transitions. [2022-11-20 11:54:32,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:54:32,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4324 transitions. [2022-11-20 11:54:32,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 216.2) internal successors, (4324), 20 states have internal predecessors, (4324), 0 states have call successors, (0), 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 11:54:32,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 305.0) internal successors, (6405), 21 states have internal predecessors, (6405), 0 states have call successors, (0), 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 11:54:32,205 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 305.0) internal successors, (6405), 21 states have internal predecessors, (6405), 0 states have call successors, (0), 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 11:54:32,206 INFO L175 Difference]: Start difference. First operand has 305 places, 301 transitions, 745 flow. Second operand 20 states and 4324 transitions. [2022-11-20 11:54:32,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 326 transitions, 1061 flow [2022-11-20 11:54:32,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 326 transitions, 1058 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:54:32,217 INFO L231 Difference]: Finished difference. Result has 328 places, 311 transitions, 881 flow [2022-11-20 11:54:32,218 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=742, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=881, PETRI_PLACES=328, PETRI_TRANSITIONS=311} [2022-11-20 11:54:32,218 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 43 predicate places. [2022-11-20 11:54:32,218 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 311 transitions, 881 flow [2022-11-20 11:54:32,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 212.05555555555554) internal successors, (3817), 18 states have internal predecessors, (3817), 0 states have call successors, (0), 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 11:54:32,220 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:32,220 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:54:32,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:54:32,220 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 11:54:32,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:32,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1270878461, now seen corresponding path program 1 times [2022-11-20 11:54:32,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:32,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042670800] [2022-11-20 11:54:32,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:32,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:32,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:33,485 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 11:54:33,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:33,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042670800] [2022-11-20 11:54:33,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042670800] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:33,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:33,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-20 11:54:33,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497130781] [2022-11-20 11:54:33,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:33,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:54:33,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:33,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:54:33,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:54:33,492 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 305 [2022-11-20 11:54:33,497 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 311 transitions, 881 flow. Second operand has 19 states, 19 states have (on average 203.3684210526316) internal successors, (3864), 19 states have internal predecessors, (3864), 0 states have call successors, (0), 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 11:54:33,497 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:33,497 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 305 [2022-11-20 11:54:33,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:54:36,040 INFO L130 PetriNetUnfolder]: 1729/7723 cut-off events. [2022-11-20 11:54:36,040 INFO L131 PetriNetUnfolder]: For 752/756 co-relation queries the response was YES. [2022-11-20 11:54:36,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11900 conditions, 7723 events. 1729/7723 cut-off events. For 752/756 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 71673 event pairs, 848 based on Foata normal form. 6/6940 useless extension candidates. Maximal degree in co-relation 11878. Up to 2610 conditions per place. [2022-11-20 11:54:36,095 INFO L137 encePairwiseOnDemand]: 283/305 looper letters, 115 selfloop transitions, 43 changer transitions 0/352 dead transitions. [2022-11-20 11:54:36,096 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 352 transitions, 1341 flow [2022-11-20 11:54:36,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 11:54:36,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 11:54:36,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4363 transitions. [2022-11-20 11:54:36,106 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6811865729898516 [2022-11-20 11:54:36,107 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4363 transitions. [2022-11-20 11:54:36,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4363 transitions. [2022-11-20 11:54:36,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:54:36,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4363 transitions. [2022-11-20 11:54:36,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 207.76190476190476) internal successors, (4363), 21 states have internal predecessors, (4363), 0 states have call successors, (0), 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 11:54:36,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 305.0) internal successors, (6710), 22 states have internal predecessors, (6710), 0 states have call successors, (0), 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 11:54:36,130 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 305.0) internal successors, (6710), 22 states have internal predecessors, (6710), 0 states have call successors, (0), 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 11:54:36,130 INFO L175 Difference]: Start difference. First operand has 328 places, 311 transitions, 881 flow. Second operand 21 states and 4363 transitions. [2022-11-20 11:54:36,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 352 transitions, 1341 flow [2022-11-20 11:54:36,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 352 transitions, 1309 flow, removed 2 selfloop flow, removed 12 redundant places. [2022-11-20 11:54:36,142 INFO L231 Difference]: Finished difference. Result has 343 places, 320 transitions, 1033 flow [2022-11-20 11:54:36,143 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=849, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1033, PETRI_PLACES=343, PETRI_TRANSITIONS=320} [2022-11-20 11:54:36,143 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 58 predicate places. [2022-11-20 11:54:36,144 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 320 transitions, 1033 flow [2022-11-20 11:54:36,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 203.3684210526316) internal successors, (3864), 19 states have internal predecessors, (3864), 0 states have call successors, (0), 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 11:54:36,145 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:36,145 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:54:36,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:54:36,146 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 11:54:36,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:36,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1877053161, now seen corresponding path program 2 times [2022-11-20 11:54:36,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:36,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208251409] [2022-11-20 11:54:36,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:36,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:36,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:37,360 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 11:54:37,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:37,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208251409] [2022-11-20 11:54:37,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208251409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:37,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:37,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-20 11:54:37,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280986600] [2022-11-20 11:54:37,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:37,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:54:37,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:37,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:54:37,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:54:37,365 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 305 [2022-11-20 11:54:37,369 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 320 transitions, 1033 flow. Second operand has 19 states, 19 states have (on average 203.3684210526316) internal successors, (3864), 19 states have internal predecessors, (3864), 0 states have call successors, (0), 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 11:54:37,369 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:37,369 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 305 [2022-11-20 11:54:37,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:54:40,090 INFO L130 PetriNetUnfolder]: 1722/7629 cut-off events. [2022-11-20 11:54:40,090 INFO L131 PetriNetUnfolder]: For 917/921 co-relation queries the response was YES. [2022-11-20 11:54:40,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11880 conditions, 7629 events. 1722/7629 cut-off events. For 917/921 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 70807 event pairs, 852 based on Foata normal form. 6/6847 useless extension candidates. Maximal degree in co-relation 11851. Up to 2530 conditions per place. [2022-11-20 11:54:40,155 INFO L137 encePairwiseOnDemand]: 285/305 looper letters, 105 selfloop transitions, 37 changer transitions 0/336 dead transitions. [2022-11-20 11:54:40,155 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 336 transitions, 1369 flow [2022-11-20 11:54:40,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 11:54:40,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-20 11:54:40,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3531 transitions. [2022-11-20 11:54:40,162 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6810028929604629 [2022-11-20 11:54:40,162 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3531 transitions. [2022-11-20 11:54:40,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3531 transitions. [2022-11-20 11:54:40,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:54:40,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3531 transitions. [2022-11-20 11:54:40,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 207.7058823529412) internal successors, (3531), 17 states have internal predecessors, (3531), 0 states have call successors, (0), 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 11:54:40,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 305.0) internal successors, (5490), 18 states have internal predecessors, (5490), 0 states have call successors, (0), 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 11:54:40,181 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 305.0) internal successors, (5490), 18 states have internal predecessors, (5490), 0 states have call successors, (0), 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 11:54:40,181 INFO L175 Difference]: Start difference. First operand has 343 places, 320 transitions, 1033 flow. Second operand 17 states and 3531 transitions. [2022-11-20 11:54:40,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 336 transitions, 1369 flow [2022-11-20 11:54:40,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 336 transitions, 1339 flow, removed 5 selfloop flow, removed 10 redundant places. [2022-11-20 11:54:40,193 INFO L231 Difference]: Finished difference. Result has 347 places, 318 transitions, 1061 flow [2022-11-20 11:54:40,194 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=987, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1061, PETRI_PLACES=347, PETRI_TRANSITIONS=318} [2022-11-20 11:54:40,195 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 62 predicate places. [2022-11-20 11:54:40,195 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 318 transitions, 1061 flow [2022-11-20 11:54:40,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 203.3684210526316) internal successors, (3864), 19 states have internal predecessors, (3864), 0 states have call successors, (0), 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 11:54:40,196 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:40,197 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:54:40,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 11:54:40,197 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 11:54:40,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:40,198 INFO L85 PathProgramCache]: Analyzing trace with hash -539717566, now seen corresponding path program 1 times [2022-11-20 11:54:40,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:40,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398886962] [2022-11-20 11:54:40,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:40,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:40,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:40,273 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 11:54:40,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:40,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398886962] [2022-11-20 11:54:40,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398886962] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:40,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:40,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:54:40,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154756070] [2022-11-20 11:54:40,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:40,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:54:40,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:40,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:54:40,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:54:40,277 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 305 [2022-11-20 11:54:40,278 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 318 transitions, 1061 flow. Second operand has 4 states, 4 states have (on average 277.5) internal successors, (1110), 4 states have internal predecessors, (1110), 0 states have call successors, (0), 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 11:54:40,278 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:40,278 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 305 [2022-11-20 11:54:40,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:54:40,647 INFO L130 PetriNetUnfolder]: 113/1529 cut-off events. [2022-11-20 11:54:40,648 INFO L131 PetriNetUnfolder]: For 207/207 co-relation queries the response was YES. [2022-11-20 11:54:40,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2314 conditions, 1529 events. 113/1529 cut-off events. For 207/207 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 6899 event pairs, 31 based on Foata normal form. 0/1372 useless extension candidates. Maximal degree in co-relation 2285. Up to 191 conditions per place. [2022-11-20 11:54:40,664 INFO L137 encePairwiseOnDemand]: 296/305 looper letters, 27 selfloop transitions, 4 changer transitions 0/330 dead transitions. [2022-11-20 11:54:40,664 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 330 transitions, 1153 flow [2022-11-20 11:54:40,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:54:40,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:54:40,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1416 transitions. [2022-11-20 11:54:40,667 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9285245901639344 [2022-11-20 11:54:40,667 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1416 transitions. [2022-11-20 11:54:40,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1416 transitions. [2022-11-20 11:54:40,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:54:40,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1416 transitions. [2022-11-20 11:54:40,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 283.2) internal successors, (1416), 5 states have internal predecessors, (1416), 0 states have call successors, (0), 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 11:54:40,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 states have internal predecessors, (1830), 0 states have call successors, (0), 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 11:54:40,674 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 states have internal predecessors, (1830), 0 states have call successors, (0), 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 11:54:40,674 INFO L175 Difference]: Start difference. First operand has 347 places, 318 transitions, 1061 flow. Second operand 5 states and 1416 transitions. [2022-11-20 11:54:40,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 330 transitions, 1153 flow [2022-11-20 11:54:40,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 330 transitions, 1079 flow, removed 0 selfloop flow, removed 16 redundant places. [2022-11-20 11:54:40,683 INFO L231 Difference]: Finished difference. Result has 338 places, 321 transitions, 1023 flow [2022-11-20 11:54:40,684 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=987, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1023, PETRI_PLACES=338, PETRI_TRANSITIONS=321} [2022-11-20 11:54:40,685 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 53 predicate places. [2022-11-20 11:54:40,685 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 321 transitions, 1023 flow [2022-11-20 11:54:40,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 277.5) internal successors, (1110), 4 states have internal predecessors, (1110), 0 states have call successors, (0), 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 11:54:40,686 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:40,686 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:54:40,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 11:54:40,687 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 11:54:40,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:40,687 INFO L85 PathProgramCache]: Analyzing trace with hash -870761161, now seen corresponding path program 1 times [2022-11-20 11:54:40,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:40,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364760466] [2022-11-20 11:54:40,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:40,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:40,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:40,762 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:54:40,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:40,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364760466] [2022-11-20 11:54:40,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364760466] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:40,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:40,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:54:40,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373109580] [2022-11-20 11:54:40,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:40,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:54:40,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:40,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:54:40,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:54:40,770 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 305 [2022-11-20 11:54:40,771 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 321 transitions, 1023 flow. Second operand has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 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 11:54:40,771 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:40,772 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 305 [2022-11-20 11:54:40,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:54:41,126 INFO L130 PetriNetUnfolder]: 109/1505 cut-off events. [2022-11-20 11:54:41,126 INFO L131 PetriNetUnfolder]: For 193/193 co-relation queries the response was YES. [2022-11-20 11:54:41,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2312 conditions, 1505 events. 109/1505 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 6750 event pairs, 10 based on Foata normal form. 20/1418 useless extension candidates. Maximal degree in co-relation 2280. Up to 80 conditions per place. [2022-11-20 11:54:41,138 INFO L137 encePairwiseOnDemand]: 298/305 looper letters, 16 selfloop transitions, 8 changer transitions 0/323 dead transitions. [2022-11-20 11:54:41,138 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 323 transitions, 1077 flow [2022-11-20 11:54:41,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:54:41,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:54:41,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1403 transitions. [2022-11-20 11:54:41,141 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.92 [2022-11-20 11:54:41,141 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1403 transitions. [2022-11-20 11:54:41,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1403 transitions. [2022-11-20 11:54:41,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:54:41,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1403 transitions. [2022-11-20 11:54:41,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 280.6) internal successors, (1403), 5 states have internal predecessors, (1403), 0 states have call successors, (0), 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 11:54:41,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 states have internal predecessors, (1830), 0 states have call successors, (0), 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 11:54:41,148 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 states have internal predecessors, (1830), 0 states have call successors, (0), 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 11:54:41,148 INFO L175 Difference]: Start difference. First operand has 338 places, 321 transitions, 1023 flow. Second operand 5 states and 1403 transitions. [2022-11-20 11:54:41,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 323 transitions, 1077 flow [2022-11-20 11:54:41,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 323 transitions, 1075 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:54:41,157 INFO L231 Difference]: Finished difference. Result has 340 places, 320 transitions, 1037 flow [2022-11-20 11:54:41,158 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=1013, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1037, PETRI_PLACES=340, PETRI_TRANSITIONS=320} [2022-11-20 11:54:41,158 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 55 predicate places. [2022-11-20 11:54:41,159 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 320 transitions, 1037 flow [2022-11-20 11:54:41,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 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 11:54:41,159 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:41,160 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:54:41,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 11:54:41,160 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 11:54:41,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:41,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1223791416, now seen corresponding path program 1 times [2022-11-20 11:54:41,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:41,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115249176] [2022-11-20 11:54:41,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:41,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:41,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:41,275 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:54:41,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:41,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115249176] [2022-11-20 11:54:41,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115249176] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:54:41,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369951110] [2022-11-20 11:54:41,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:41,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:54:41,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_306d4302-c553-4b70-b520-372b7289b858/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:54:41,280 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_306d4302-c553-4b70-b520-372b7289b858/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:54:41,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_306d4302-c553-4b70-b520-372b7289b858/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:54:41,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:41,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:54:41,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:54:41,499 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:54:41,499 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:54:41,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369951110] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:41,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:54:41,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 11:54:41,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260071262] [2022-11-20 11:54:41,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:41,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:54:41,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:41,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:54:41,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:54:41,503 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 305 [2022-11-20 11:54:41,504 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 320 transitions, 1037 flow. Second operand has 6 states, 6 states have (on average 278.1666666666667) internal successors, (1669), 6 states have internal predecessors, (1669), 0 states have call successors, (0), 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 11:54:41,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:41,504 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 305 [2022-11-20 11:54:41,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:54:41,881 INFO L130 PetriNetUnfolder]: 105/1481 cut-off events. [2022-11-20 11:54:41,881 INFO L131 PetriNetUnfolder]: For 253/253 co-relation queries the response was YES. [2022-11-20 11:54:41,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2307 conditions, 1481 events. 105/1481 cut-off events. For 253/253 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 6587 event pairs, 3 based on Foata normal form. 20/1394 useless extension candidates. Maximal degree in co-relation 2275. Up to 84 conditions per place. [2022-11-20 11:54:41,897 INFO L137 encePairwiseOnDemand]: 299/305 looper letters, 23 selfloop transitions, 6 changer transitions 0/328 dead transitions. [2022-11-20 11:54:41,897 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 328 transitions, 1117 flow [2022-11-20 11:54:41,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:54:41,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:54:41,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1963 transitions. [2022-11-20 11:54:41,901 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9194379391100702 [2022-11-20 11:54:41,901 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1963 transitions. [2022-11-20 11:54:41,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1963 transitions. [2022-11-20 11:54:41,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:54:41,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1963 transitions. [2022-11-20 11:54:41,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 280.42857142857144) internal successors, (1963), 7 states have internal predecessors, (1963), 0 states have call successors, (0), 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 11:54:41,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 305.0) internal successors, (2440), 8 states have internal predecessors, (2440), 0 states have call successors, (0), 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 11:54:41,910 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 305.0) internal successors, (2440), 8 states have internal predecessors, (2440), 0 states have call successors, (0), 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 11:54:41,910 INFO L175 Difference]: Start difference. First operand has 340 places, 320 transitions, 1037 flow. Second operand 7 states and 1963 transitions. [2022-11-20 11:54:41,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 328 transitions, 1117 flow [2022-11-20 11:54:41,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 328 transitions, 1105 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:54:41,919 INFO L231 Difference]: Finished difference. Result has 341 places, 318 transitions, 1029 flow [2022-11-20 11:54:41,920 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=1017, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1029, PETRI_PLACES=341, PETRI_TRANSITIONS=318} [2022-11-20 11:54:41,921 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 56 predicate places. [2022-11-20 11:54:41,921 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 318 transitions, 1029 flow [2022-11-20 11:54:41,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 278.1666666666667) internal successors, (1669), 6 states have internal predecessors, (1669), 0 states have call successors, (0), 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 11:54:41,922 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:41,922 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:54:41,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_306d4302-c553-4b70-b520-372b7289b858/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:54:42,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_306d4302-c553-4b70-b520-372b7289b858/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:54:42,129 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 11:54:42,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:42,130 INFO L85 PathProgramCache]: Analyzing trace with hash -273658069, now seen corresponding path program 1 times [2022-11-20 11:54:42,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:42,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840420766] [2022-11-20 11:54:42,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:42,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:42,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:43,230 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 11:54:43,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:43,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840420766] [2022-11-20 11:54:43,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840420766] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:43,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:43,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-20 11:54:43,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695259623] [2022-11-20 11:54:43,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:43,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 11:54:43,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:43,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 11:54:43,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:54:43,235 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 305 [2022-11-20 11:54:43,239 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 318 transitions, 1029 flow. Second operand has 17 states, 17 states have (on average 218.8235294117647) internal successors, (3720), 17 states have internal predecessors, (3720), 0 states have call successors, (0), 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 11:54:43,239 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:43,239 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 305 [2022-11-20 11:54:43,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:54:45,475 INFO L130 PetriNetUnfolder]: 1763/7839 cut-off events. [2022-11-20 11:54:45,475 INFO L131 PetriNetUnfolder]: For 1105/1109 co-relation queries the response was YES. [2022-11-20 11:54:45,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12421 conditions, 7839 events. 1763/7839 cut-off events. For 1105/1109 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 70413 event pairs, 1362 based on Foata normal form. 2/7129 useless extension candidates. Maximal degree in co-relation 12388. Up to 2756 conditions per place. [2022-11-20 11:54:45,534 INFO L137 encePairwiseOnDemand]: 289/305 looper letters, 85 selfloop transitions, 29 changer transitions 0/326 dead transitions. [2022-11-20 11:54:45,534 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 326 transitions, 1277 flow [2022-11-20 11:54:45,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 11:54:45,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-20 11:54:45,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3341 transitions. [2022-11-20 11:54:45,540 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7302732240437159 [2022-11-20 11:54:45,540 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3341 transitions. [2022-11-20 11:54:45,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3341 transitions. [2022-11-20 11:54:45,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:54:45,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3341 transitions. [2022-11-20 11:54:45,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 222.73333333333332) internal successors, (3341), 15 states have internal predecessors, (3341), 0 states have call successors, (0), 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 11:54:45,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 305.0) internal successors, (4880), 16 states have internal predecessors, (4880), 0 states have call successors, (0), 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 11:54:45,556 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 305.0) internal successors, (4880), 16 states have internal predecessors, (4880), 0 states have call successors, (0), 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 11:54:45,556 INFO L175 Difference]: Start difference. First operand has 341 places, 318 transitions, 1029 flow. Second operand 15 states and 3341 transitions. [2022-11-20 11:54:45,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 326 transitions, 1277 flow [2022-11-20 11:54:45,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 326 transitions, 1262 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-20 11:54:45,569 INFO L231 Difference]: Finished difference. Result has 353 places, 321 transitions, 1108 flow [2022-11-20 11:54:45,570 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=1006, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1108, PETRI_PLACES=353, PETRI_TRANSITIONS=321} [2022-11-20 11:54:45,570 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 68 predicate places. [2022-11-20 11:54:45,571 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 321 transitions, 1108 flow [2022-11-20 11:54:45,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 218.8235294117647) internal successors, (3720), 17 states have internal predecessors, (3720), 0 states have call successors, (0), 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 11:54:45,572 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:45,572 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:54:45,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 11:54:45,573 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 11:54:45,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:45,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1528622662, now seen corresponding path program 1 times [2022-11-20 11:54:45,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:45,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290313539] [2022-11-20 11:54:45,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:45,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:45,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:51,737 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 11:54:51,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:51,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290313539] [2022-11-20 11:54:51,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290313539] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:51,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:51,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:54:51,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101498697] [2022-11-20 11:54:51,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:51,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:54:51,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:51,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:54:51,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:54:51,742 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 305 [2022-11-20 11:54:51,746 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 321 transitions, 1108 flow. Second operand has 20 states, 20 states have (on average 209.8) internal successors, (4196), 20 states have internal predecessors, (4196), 0 states have call successors, (0), 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 11:54:51,746 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:51,746 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 305 [2022-11-20 11:54:51,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:54:57,154 INFO L130 PetriNetUnfolder]: 1622/7688 cut-off events. [2022-11-20 11:54:57,155 INFO L131 PetriNetUnfolder]: For 1102/1106 co-relation queries the response was YES. [2022-11-20 11:54:57,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12169 conditions, 7688 events. 1622/7688 cut-off events. For 1102/1106 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 70297 event pairs, 1322 based on Foata normal form. 8/7015 useless extension candidates. Maximal degree in co-relation 12134. Up to 2493 conditions per place. [2022-11-20 11:54:57,216 INFO L137 encePairwiseOnDemand]: 286/305 looper letters, 95 selfloop transitions, 42 changer transitions 0/342 dead transitions. [2022-11-20 11:54:57,217 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 342 transitions, 1451 flow [2022-11-20 11:54:57,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 11:54:57,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-20 11:54:57,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4259 transitions. [2022-11-20 11:54:57,224 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6981967213114754 [2022-11-20 11:54:57,225 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4259 transitions. [2022-11-20 11:54:57,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4259 transitions. [2022-11-20 11:54:57,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:54:57,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4259 transitions. [2022-11-20 11:54:57,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 212.95) internal successors, (4259), 20 states have internal predecessors, (4259), 0 states have call successors, (0), 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 11:54:57,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 305.0) internal successors, (6405), 21 states have internal predecessors, (6405), 0 states have call successors, (0), 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 11:54:57,248 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 305.0) internal successors, (6405), 21 states have internal predecessors, (6405), 0 states have call successors, (0), 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 11:54:57,249 INFO L175 Difference]: Start difference. First operand has 353 places, 321 transitions, 1108 flow. Second operand 20 states and 4259 transitions. [2022-11-20 11:54:57,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 342 transitions, 1451 flow [2022-11-20 11:54:57,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 342 transitions, 1424 flow, removed 2 selfloop flow, removed 10 redundant places. [2022-11-20 11:54:57,263 INFO L231 Difference]: Finished difference. Result has 365 places, 324 transitions, 1223 flow [2022-11-20 11:54:57,264 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=1076, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1223, PETRI_PLACES=365, PETRI_TRANSITIONS=324} [2022-11-20 11:54:57,265 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 80 predicate places. [2022-11-20 11:54:57,265 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 324 transitions, 1223 flow [2022-11-20 11:54:57,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 209.8) internal successors, (4196), 20 states have internal predecessors, (4196), 0 states have call successors, (0), 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 11:54:57,267 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:57,267 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:54:57,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 11:54:57,268 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 11:54:57,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:57,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1387768118, now seen corresponding path program 2 times [2022-11-20 11:54:57,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:57,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120198167] [2022-11-20 11:54:57,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:57,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:57,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:58,983 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 11:54:58,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:58,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120198167] [2022-11-20 11:54:58,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120198167] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:58,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:58,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-20 11:54:58,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060522996] [2022-11-20 11:54:58,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:58,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:54:58,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:58,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:54:58,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:54:58,991 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 305 [2022-11-20 11:54:58,994 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 324 transitions, 1223 flow. Second operand has 18 states, 18 states have (on average 210.11111111111111) internal successors, (3782), 18 states have internal predecessors, (3782), 0 states have call successors, (0), 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 11:54:58,995 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:58,995 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 305 [2022-11-20 11:54:58,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:55:01,599 INFO L130 PetriNetUnfolder]: 1618/7707 cut-off events. [2022-11-20 11:55:01,599 INFO L131 PetriNetUnfolder]: For 1364/1368 co-relation queries the response was YES. [2022-11-20 11:55:01,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12326 conditions, 7707 events. 1618/7707 cut-off events. For 1364/1368 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 70993 event pairs, 787 based on Foata normal form. 3/7028 useless extension candidates. Maximal degree in co-relation 12288. Up to 2417 conditions per place. [2022-11-20 11:55:01,660 INFO L137 encePairwiseOnDemand]: 288/305 looper letters, 95 selfloop transitions, 31 changer transitions 0/331 dead transitions. [2022-11-20 11:55:01,660 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 331 transitions, 1493 flow [2022-11-20 11:55:01,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:55:01,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-20 11:55:01,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2995 transitions. [2022-11-20 11:55:01,667 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7014051522248244 [2022-11-20 11:55:01,667 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2995 transitions. [2022-11-20 11:55:01,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2995 transitions. [2022-11-20 11:55:01,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:55:01,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2995 transitions. [2022-11-20 11:55:01,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 213.92857142857142) internal successors, (2995), 14 states have internal predecessors, (2995), 0 states have call successors, (0), 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 11:55:01,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 305.0) internal successors, (4575), 15 states have internal predecessors, (4575), 0 states have call successors, (0), 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 11:55:01,682 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 305.0) internal successors, (4575), 15 states have internal predecessors, (4575), 0 states have call successors, (0), 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 11:55:01,682 INFO L175 Difference]: Start difference. First operand has 365 places, 324 transitions, 1223 flow. Second operand 14 states and 2995 transitions. [2022-11-20 11:55:01,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 331 transitions, 1493 flow [2022-11-20 11:55:01,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 331 transitions, 1425 flow, removed 5 selfloop flow, removed 19 redundant places. [2022-11-20 11:55:01,699 INFO L231 Difference]: Finished difference. Result has 357 places, 321 transitions, 1205 flow [2022-11-20 11:55:01,699 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=1143, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1205, PETRI_PLACES=357, PETRI_TRANSITIONS=321} [2022-11-20 11:55:01,700 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 72 predicate places. [2022-11-20 11:55:01,700 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 321 transitions, 1205 flow [2022-11-20 11:55:01,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 210.11111111111111) internal successors, (3782), 18 states have internal predecessors, (3782), 0 states have call successors, (0), 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 11:55:01,701 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:55:01,702 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:55:01,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 11:55:01,702 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 11:55:01,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:55:01,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1693646516, now seen corresponding path program 1 times [2022-11-20 11:55:01,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:55:01,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807696784] [2022-11-20 11:55:01,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:55:01,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:55:01,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:55:05,212 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 11:55:05,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:55:05,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807696784] [2022-11-20 11:55:05,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807696784] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:55:05,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:55:05,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-11-20 11:55:05,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314194712] [2022-11-20 11:55:05,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:55:05,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-20 11:55:05,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:55:05,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-20 11:55:05,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=802, Unknown=0, NotChecked=0, Total=930 [2022-11-20 11:55:05,220 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 305 [2022-11-20 11:55:05,225 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 321 transitions, 1205 flow. Second operand has 31 states, 31 states have (on average 195.0) internal successors, (6045), 31 states have internal predecessors, (6045), 0 states have call successors, (0), 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 11:55:05,225 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:55:05,225 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 305 [2022-11-20 11:55:05,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:55:11,321 INFO L130 PetriNetUnfolder]: 2661/10800 cut-off events. [2022-11-20 11:55:11,322 INFO L131 PetriNetUnfolder]: For 1870/1874 co-relation queries the response was YES. [2022-11-20 11:55:11,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17767 conditions, 10800 events. 2661/10800 cut-off events. For 1870/1874 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 104452 event pairs, 1986 based on Foata normal form. 2/9759 useless extension candidates. Maximal degree in co-relation 17734. Up to 4022 conditions per place. [2022-11-20 11:55:11,461 INFO L137 encePairwiseOnDemand]: 266/305 looper letters, 138 selfloop transitions, 68 changer transitions 0/389 dead transitions. [2022-11-20 11:55:11,461 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 389 transitions, 1902 flow [2022-11-20 11:55:11,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-20 11:55:11,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-20 11:55:11,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 7332 transitions. [2022-11-20 11:55:11,470 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6497120070890563 [2022-11-20 11:55:11,470 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 7332 transitions. [2022-11-20 11:55:11,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 7332 transitions. [2022-11-20 11:55:11,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:55:11,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 7332 transitions. [2022-11-20 11:55:11,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 198.16216216216216) internal successors, (7332), 37 states have internal predecessors, (7332), 0 states have call successors, (0), 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 11:55:11,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 305.0) internal successors, (11590), 38 states have internal predecessors, (11590), 0 states have call successors, (0), 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 11:55:11,504 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 305.0) internal successors, (11590), 38 states have internal predecessors, (11590), 0 states have call successors, (0), 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 11:55:11,505 INFO L175 Difference]: Start difference. First operand has 357 places, 321 transitions, 1205 flow. Second operand 37 states and 7332 transitions. [2022-11-20 11:55:11,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 389 transitions, 1902 flow [2022-11-20 11:55:11,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 389 transitions, 1840 flow, removed 0 selfloop flow, removed 13 redundant places. [2022-11-20 11:55:11,526 INFO L231 Difference]: Finished difference. Result has 395 places, 355 transitions, 1604 flow [2022-11-20 11:55:11,526 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=1143, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=1604, PETRI_PLACES=395, PETRI_TRANSITIONS=355} [2022-11-20 11:55:11,527 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 110 predicate places. [2022-11-20 11:55:11,527 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 355 transitions, 1604 flow [2022-11-20 11:55:11,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 195.0) internal successors, (6045), 31 states have internal predecessors, (6045), 0 states have call successors, (0), 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 11:55:11,528 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:55:11,529 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:55:11,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 11:55:11,529 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 11:55:11,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:55:11,530 INFO L85 PathProgramCache]: Analyzing trace with hash 963435259, now seen corresponding path program 1 times [2022-11-20 11:55:11,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:55:11,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019517970] [2022-11-20 11:55:11,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:55:11,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:55:11,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:55:13,011 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 11:55:13,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:55:13,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019517970] [2022-11-20 11:55:13,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019517970] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:55:13,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:55:13,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 11:55:13,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240014335] [2022-11-20 11:55:13,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:55:13,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 11:55:13,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:55:13,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 11:55:13,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2022-11-20 11:55:13,017 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 305 [2022-11-20 11:55:13,021 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 355 transitions, 1604 flow. Second operand has 23 states, 23 states have (on average 208.65217391304347) internal successors, (4799), 23 states have internal predecessors, (4799), 0 states have call successors, (0), 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 11:55:13,021 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:55:13,021 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 305 [2022-11-20 11:55:13,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:55:22,951 INFO L130 PetriNetUnfolder]: 6583/21347 cut-off events. [2022-11-20 11:55:22,952 INFO L131 PetriNetUnfolder]: For 3745/3785 co-relation queries the response was YES. [2022-11-20 11:55:23,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38440 conditions, 21347 events. 6583/21347 cut-off events. For 3745/3785 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 215685 event pairs, 1104 based on Foata normal form. 132/19951 useless extension candidates. Maximal degree in co-relation 38392. Up to 3159 conditions per place. [2022-11-20 11:55:23,147 INFO L137 encePairwiseOnDemand]: 274/305 looper letters, 408 selfloop transitions, 141 changer transitions 0/750 dead transitions. [2022-11-20 11:55:23,147 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 750 transitions, 3817 flow [2022-11-20 11:55:23,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-20 11:55:23,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-20 11:55:23,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 8726 transitions. [2022-11-20 11:55:23,161 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7152459016393443 [2022-11-20 11:55:23,162 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 8726 transitions. [2022-11-20 11:55:23,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 8726 transitions. [2022-11-20 11:55:23,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:55:23,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 8726 transitions. [2022-11-20 11:55:23,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 218.15) internal successors, (8726), 40 states have internal predecessors, (8726), 0 states have call successors, (0), 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 11:55:23,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 305.0) internal successors, (12505), 41 states have internal predecessors, (12505), 0 states have call successors, (0), 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 11:55:23,193 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 305.0) internal successors, (12505), 41 states have internal predecessors, (12505), 0 states have call successors, (0), 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 11:55:23,193 INFO L175 Difference]: Start difference. First operand has 395 places, 355 transitions, 1604 flow. Second operand 40 states and 8726 transitions. [2022-11-20 11:55:23,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 750 transitions, 3817 flow [2022-11-20 11:55:23,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 750 transitions, 3550 flow, removed 88 selfloop flow, removed 19 redundant places. [2022-11-20 11:55:23,241 INFO L231 Difference]: Finished difference. Result has 426 places, 456 transitions, 2203 flow [2022-11-20 11:55:23,242 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=1395, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=2203, PETRI_PLACES=426, PETRI_TRANSITIONS=456} [2022-11-20 11:55:23,242 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 141 predicate places. [2022-11-20 11:55:23,243 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 456 transitions, 2203 flow [2022-11-20 11:55:23,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 208.65217391304347) internal successors, (4799), 23 states have internal predecessors, (4799), 0 states have call successors, (0), 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 11:55:23,244 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:55:23,244 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:55:23,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 11:55:23,244 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 11:55:23,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:55:23,245 INFO L85 PathProgramCache]: Analyzing trace with hash 578067855, now seen corresponding path program 1 times [2022-11-20 11:55:23,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:55:23,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85612886] [2022-11-20 11:55:23,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:55:23,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:55:23,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:55:27,945 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 11:55:27,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:55:27,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85612886] [2022-11-20 11:55:27,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85612886] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:55:27,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:55:27,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-11-20 11:55:27,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379527288] [2022-11-20 11:55:27,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:55:27,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-20 11:55:27,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:55:27,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-20 11:55:27,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=967, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 11:55:27,953 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 305 [2022-11-20 11:55:27,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 456 transitions, 2203 flow. Second operand has 34 states, 34 states have (on average 186.05882352941177) internal successors, (6326), 34 states have internal predecessors, (6326), 0 states have call successors, (0), 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 11:55:27,957 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:55:27,957 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 305 [2022-11-20 11:55:27,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:55:39,270 INFO L130 PetriNetUnfolder]: 7601/24417 cut-off events. [2022-11-20 11:55:39,270 INFO L131 PetriNetUnfolder]: For 9586/9814 co-relation queries the response was YES. [2022-11-20 11:55:39,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48451 conditions, 24417 events. 7601/24417 cut-off events. For 9586/9814 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 258663 event pairs, 3226 based on Foata normal form. 24/22355 useless extension candidates. Maximal degree in co-relation 48394. Up to 11359 conditions per place. [2022-11-20 11:55:39,531 INFO L137 encePairwiseOnDemand]: 267/305 looper letters, 259 selfloop transitions, 95 changer transitions 0/542 dead transitions. [2022-11-20 11:55:39,531 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 542 transitions, 3230 flow [2022-11-20 11:55:39,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-20 11:55:39,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-20 11:55:39,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 7015 transitions. [2022-11-20 11:55:39,539 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6216216216216216 [2022-11-20 11:55:39,540 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 7015 transitions. [2022-11-20 11:55:39,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 7015 transitions. [2022-11-20 11:55:39,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:55:39,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 7015 transitions. [2022-11-20 11:55:39,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 189.59459459459458) internal successors, (7015), 37 states have internal predecessors, (7015), 0 states have call successors, (0), 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 11:55:39,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 305.0) internal successors, (11590), 38 states have internal predecessors, (11590), 0 states have call successors, (0), 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 11:55:39,570 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 305.0) internal successors, (11590), 38 states have internal predecessors, (11590), 0 states have call successors, (0), 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 11:55:39,570 INFO L175 Difference]: Start difference. First operand has 426 places, 456 transitions, 2203 flow. Second operand 37 states and 7015 transitions. [2022-11-20 11:55:39,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 542 transitions, 3230 flow [2022-11-20 11:55:39,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 542 transitions, 3140 flow, removed 38 selfloop flow, removed 7 redundant places. [2022-11-20 11:55:39,681 INFO L231 Difference]: Finished difference. Result has 466 places, 474 transitions, 2531 flow [2022-11-20 11:55:39,682 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=2119, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=2531, PETRI_PLACES=466, PETRI_TRANSITIONS=474} [2022-11-20 11:55:39,682 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 181 predicate places. [2022-11-20 11:55:39,682 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 474 transitions, 2531 flow [2022-11-20 11:55:39,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 186.05882352941177) internal successors, (6326), 34 states have internal predecessors, (6326), 0 states have call successors, (0), 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 11:55:39,684 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:55:39,684 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:55:39,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 11:55:39,684 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 11:55:39,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:55:39,685 INFO L85 PathProgramCache]: Analyzing trace with hash 67393768, now seen corresponding path program 1 times [2022-11-20 11:55:39,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:55:39,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908278526] [2022-11-20 11:55:39,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:55:39,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:55:39,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:55:41,552 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 11:55:41,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:55:41,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908278526] [2022-11-20 11:55:41,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908278526] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:55:41,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:55:41,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-20 11:55:41,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566364697] [2022-11-20 11:55:41,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:55:41,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-20 11:55:41,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:55:41,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-20 11:55:41,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2022-11-20 11:55:41,561 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 305 [2022-11-20 11:55:41,567 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 474 transitions, 2531 flow. Second operand has 25 states, 25 states have (on average 205.56) internal successors, (5139), 25 states have internal predecessors, (5139), 0 states have call successors, (0), 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 11:55:41,568 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:55:41,568 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 305 [2022-11-20 11:55:41,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:55:53,751 INFO L130 PetriNetUnfolder]: 7774/26161 cut-off events. [2022-11-20 11:55:53,751 INFO L131 PetriNetUnfolder]: For 13404/13701 co-relation queries the response was YES. [2022-11-20 11:55:53,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52699 conditions, 26161 events. 7774/26161 cut-off events. For 13404/13701 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 279200 event pairs, 1332 based on Foata normal form. 195/24341 useless extension candidates. Maximal degree in co-relation 52631. Up to 2899 conditions per place. [2022-11-20 11:55:54,041 INFO L137 encePairwiseOnDemand]: 274/305 looper letters, 418 selfloop transitions, 185 changer transitions 0/802 dead transitions. [2022-11-20 11:55:54,042 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 802 transitions, 4766 flow [2022-11-20 11:55:54,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-20 11:55:54,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-11-20 11:55:54,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 8764 transitions. [2022-11-20 11:55:54,053 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7008396641343463 [2022-11-20 11:55:54,053 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 8764 transitions. [2022-11-20 11:55:54,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 8764 transitions. [2022-11-20 11:55:54,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:55:54,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 8764 transitions. [2022-11-20 11:55:54,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 213.7560975609756) internal successors, (8764), 41 states have internal predecessors, (8764), 0 states have call successors, (0), 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 11:55:54,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 305.0) internal successors, (12810), 42 states have internal predecessors, (12810), 0 states have call successors, (0), 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 11:55:54,086 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 305.0) internal successors, (12810), 42 states have internal predecessors, (12810), 0 states have call successors, (0), 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 11:55:54,086 INFO L175 Difference]: Start difference. First operand has 466 places, 474 transitions, 2531 flow. Second operand 41 states and 8764 transitions. [2022-11-20 11:55:54,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 802 transitions, 4766 flow [2022-11-20 11:55:54,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 802 transitions, 4587 flow, removed 27 selfloop flow, removed 26 redundant places. [2022-11-20 11:55:54,220 INFO L231 Difference]: Finished difference. Result has 489 places, 540 transitions, 3305 flow [2022-11-20 11:55:54,221 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=2367, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=3305, PETRI_PLACES=489, PETRI_TRANSITIONS=540} [2022-11-20 11:55:54,222 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 204 predicate places. [2022-11-20 11:55:54,222 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 540 transitions, 3305 flow [2022-11-20 11:55:54,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 205.56) internal successors, (5139), 25 states have internal predecessors, (5139), 0 states have call successors, (0), 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 11:55:54,223 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:55:54,223 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:55:54,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 11:55:54,224 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 11:55:54,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:55:54,224 INFO L85 PathProgramCache]: Analyzing trace with hash 2048569117, now seen corresponding path program 1 times [2022-11-20 11:55:54,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:55:54,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16518237] [2022-11-20 11:55:54,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:55:54,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:55:54,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:55:56,745 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 11:55:56,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:55:56,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16518237] [2022-11-20 11:55:56,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16518237] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:55:56,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:55:56,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-20 11:55:56,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760752210] [2022-11-20 11:55:56,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:55:56,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-20 11:55:56,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:55:56,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-20 11:55:56,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2022-11-20 11:55:56,751 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 305 [2022-11-20 11:55:56,755 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 540 transitions, 3305 flow. Second operand has 27 states, 27 states have (on average 209.22222222222223) internal successors, (5649), 27 states have internal predecessors, (5649), 0 states have call successors, (0), 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 11:55:56,755 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:55:56,755 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 305 [2022-11-20 11:55:56,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:56:08,597 INFO L130 PetriNetUnfolder]: 8169/29270 cut-off events. [2022-11-20 11:56:08,597 INFO L131 PetriNetUnfolder]: For 20531/21056 co-relation queries the response was YES. [2022-11-20 11:56:08,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60341 conditions, 29270 events. 8169/29270 cut-off events. For 20531/21056 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 326071 event pairs, 4674 based on Foata normal form. 87/26843 useless extension candidates. Maximal degree in co-relation 60265. Up to 10329 conditions per place. [2022-11-20 11:56:09,332 INFO L137 encePairwiseOnDemand]: 271/305 looper letters, 334 selfloop transitions, 114 changer transitions 0/721 dead transitions. [2022-11-20 11:56:09,332 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 524 places, 721 transitions, 5021 flow [2022-11-20 11:56:09,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-20 11:56:09,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-20 11:56:09,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 7707 transitions. [2022-11-20 11:56:09,339 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7019125683060109 [2022-11-20 11:56:09,340 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 7707 transitions. [2022-11-20 11:56:09,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 7707 transitions. [2022-11-20 11:56:09,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:56:09,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 7707 transitions. [2022-11-20 11:56:09,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 214.08333333333334) internal successors, (7707), 36 states have internal predecessors, (7707), 0 states have call successors, (0), 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 11:56:09,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 305.0) internal successors, (11285), 37 states have internal predecessors, (11285), 0 states have call successors, (0), 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 11:56:09,365 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 305.0) internal successors, (11285), 37 states have internal predecessors, (11285), 0 states have call successors, (0), 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 11:56:09,365 INFO L175 Difference]: Start difference. First operand has 489 places, 540 transitions, 3305 flow. Second operand 36 states and 7707 transitions. [2022-11-20 11:56:09,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 524 places, 721 transitions, 5021 flow [2022-11-20 11:56:09,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 721 transitions, 4930 flow, removed 24 selfloop flow, removed 11 redundant places. [2022-11-20 11:56:09,600 INFO L231 Difference]: Finished difference. Result has 525 places, 597 transitions, 4093 flow [2022-11-20 11:56:09,601 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=3219, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=4093, PETRI_PLACES=525, PETRI_TRANSITIONS=597} [2022-11-20 11:56:09,602 INFO L288 CegarLoopForPetriNet]: 285 programPoint places, 240 predicate places. [2022-11-20 11:56:09,602 INFO L495 AbstractCegarLoop]: Abstraction has has 525 places, 597 transitions, 4093 flow [2022-11-20 11:56:09,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 209.22222222222223) internal successors, (5649), 27 states have internal predecessors, (5649), 0 states have call successors, (0), 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 11:56:09,603 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:56:09,603 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:56:09,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-20 11:56:09,604 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 11:56:09,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:56:09,604 INFO L85 PathProgramCache]: Analyzing trace with hash -918865980, now seen corresponding path program 1 times [2022-11-20 11:56:09,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:56:09,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436555837] [2022-11-20 11:56:09,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:56:09,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:56:09,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:11,138 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 11:56:11,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:56:11,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436555837] [2022-11-20 11:56:11,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436555837] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:56:11,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:56:11,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-20 11:56:11,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108496201] [2022-11-20 11:56:11,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:56:11,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 11:56:11,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:56:11,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 11:56:11,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2022-11-20 11:56:11,143 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 305 [2022-11-20 11:56:11,146 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 597 transitions, 4093 flow. Second operand has 22 states, 22 states have (on average 208.9090909090909) internal successors, (4596), 22 states have internal predecessors, (4596), 0 states have call successors, (0), 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 11:56:11,146 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:56:11,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 305 [2022-11-20 11:56:11,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand