./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8 --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 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 --- 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-2329fc7 [2022-12-13 16:26:52,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 16:26:52,576 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 16:26:52,595 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 16:26:52,595 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 16:26:52,596 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 16:26:52,598 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 16:26:52,599 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 16:26:52,601 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 16:26:52,602 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 16:26:52,603 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 16:26:52,604 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 16:26:52,604 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 16:26:52,605 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 16:26:52,606 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 16:26:52,607 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 16:26:52,608 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 16:26:52,609 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 16:26:52,611 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 16:26:52,612 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 16:26:52,614 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 16:26:52,615 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 16:26:52,616 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 16:26:52,617 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 16:26:52,620 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 16:26:52,621 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 16:26:52,621 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 16:26:52,622 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 16:26:52,622 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 16:26:52,623 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 16:26:52,624 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 16:26:52,624 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 16:26:52,625 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 16:26:52,626 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 16:26:52,627 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 16:26:52,627 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 16:26:52,628 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 16:26:52,628 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 16:26:52,628 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 16:26:52,629 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 16:26:52,630 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 16:26:52,631 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 16:26:52,651 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 16:26:52,652 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 16:26:52,652 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 16:26:52,652 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 16:26:52,653 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 16:26:52,653 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 16:26:52,654 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 16:26:52,654 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 16:26:52,654 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 16:26:52,654 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 16:26:52,654 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 16:26:52,655 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 16:26:52,655 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 16:26:52,655 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 16:26:52,655 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 16:26:52,655 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 16:26:52,656 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 16:26:52,656 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 16:26:52,656 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 16:26:52,656 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 16:26:52,656 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 16:26:52,656 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 16:26:52,657 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 16:26:52,657 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 16:26:52,657 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 16:26:52,657 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 16:26:52,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:26:52,658 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 16:26:52,658 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 16:26:52,658 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 16:26:52,658 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 16:26:52,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 16:26:52,659 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 16:26:52,659 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 16:26:52,659 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 16:26:52,659 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 16:26:52,659 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 16:26:52,659 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 [2022-12-13 16:26:52,847 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 16:26:52,863 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 16:26:52,865 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 16:26:52,866 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 16:26:52,866 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 16:26:52,867 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2022-12-13 16:26:55,454 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 16:26:55,613 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 16:26:55,614 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2022-12-13 16:26:55,629 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/data/0a285a6eb/b72778948ecb419da0a4f01d440b360e/FLAGf3cb2aac1 [2022-12-13 16:26:55,640 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/data/0a285a6eb/b72778948ecb419da0a4f01d440b360e [2022-12-13 16:26:55,642 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 16:26:55,643 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 16:26:55,645 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 16:26:55,645 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 16:26:55,648 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 16:26:55,648 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:26:55" (1/1) ... [2022-12-13 16:26:55,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6029aceb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:26:55, skipping insertion in model container [2022-12-13 16:26:55,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:26:55" (1/1) ... [2022-12-13 16:26:55,654 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 16:26:55,676 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 16:26:55,795 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_4ce6e7f9-562a-4751-9e35-60f266605add/sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i[1115,1128] [2022-12-13 16:26:55,900 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:26:55,909 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 16:26:55,917 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_4ce6e7f9-562a-4751-9e35-60f266605add/sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i[1115,1128] [2022-12-13 16:26:55,938 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:26:55,965 INFO L208 MainTranslator]: Completed translation [2022-12-13 16:26:55,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:26:55 WrapperNode [2022-12-13 16:26:55,966 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 16:26:55,966 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 16:26:55,967 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 16:26:55,967 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 16:26:55,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:26:55" (1/1) ... [2022-12-13 16:26:55,982 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:26:55" (1/1) ... [2022-12-13 16:26:55,998 INFO L138 Inliner]: procedures = 165, calls = 35, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 124 [2022-12-13 16:26:55,998 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 16:26:55,999 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 16:26:55,999 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 16:26:55,999 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 16:26:56,006 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:26:55" (1/1) ... [2022-12-13 16:26:56,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:26:55" (1/1) ... [2022-12-13 16:26:56,008 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:26:55" (1/1) ... [2022-12-13 16:26:56,008 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:26:55" (1/1) ... [2022-12-13 16:26:56,012 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:26:55" (1/1) ... [2022-12-13 16:26:56,015 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:26:55" (1/1) ... [2022-12-13 16:26:56,016 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:26:55" (1/1) ... [2022-12-13 16:26:56,017 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:26:55" (1/1) ... [2022-12-13 16:26:56,018 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 16:26:56,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 16:26:56,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 16:26:56,019 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 16:26:56,020 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:26:55" (1/1) ... [2022-12-13 16:26:56,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:26:56,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:26:56,042 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 16:26:56,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 16:26:56,069 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 16:26:56,069 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2022-12-13 16:26:56,069 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2022-12-13 16:26:56,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 16:26:56,069 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 16:26:56,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 16:26:56,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 16:26:56,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 16:26:56,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 16:26:56,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 16:26:56,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 16:26:56,071 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 16:26:56,169 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 16:26:56,171 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 16:26:56,346 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 16:26:56,352 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 16:26:56,352 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-13 16:26:56,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:26:56 BoogieIcfgContainer [2022-12-13 16:26:56,354 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 16:26:56,356 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 16:26:56,356 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 16:26:56,358 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 16:26:56,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 04:26:55" (1/3) ... [2022-12-13 16:26:56,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7abbd4e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:26:56, skipping insertion in model container [2022-12-13 16:26:56,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:26:55" (2/3) ... [2022-12-13 16:26:56,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7abbd4e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:26:56, skipping insertion in model container [2022-12-13 16:26:56,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:26:56" (3/3) ... [2022-12-13 16:26:56,360 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2022-12-13 16:26:56,367 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 16:26:56,374 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 16:26:56,374 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-12-13 16:26:56,374 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 16:26:56,427 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 16:26:56,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 152 transitions, 309 flow [2022-12-13 16:26:56,506 INFO L130 PetriNetUnfolder]: 10/151 cut-off events. [2022-12-13 16:26:56,506 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 16:26:56,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 151 events. 10/151 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 270 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 110. Up to 2 conditions per place. [2022-12-13 16:26:56,510 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 152 transitions, 309 flow [2022-12-13 16:26:56,514 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 145 places, 151 transitions, 305 flow [2022-12-13 16:26:56,517 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 16:26:56,524 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 145 places, 151 transitions, 305 flow [2022-12-13 16:26:56,526 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 145 places, 151 transitions, 305 flow [2022-12-13 16:26:56,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 151 transitions, 305 flow [2022-12-13 16:26:56,552 INFO L130 PetriNetUnfolder]: 10/151 cut-off events. [2022-12-13 16:26:56,552 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 16:26:56,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 151 events. 10/151 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 270 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 110. Up to 2 conditions per place. [2022-12-13 16:26:56,555 INFO L119 LiptonReduction]: Number of co-enabled transitions 5888 [2022-12-13 16:26:59,916 INFO L134 LiptonReduction]: Checked pairs total: 8395 [2022-12-13 16:26:59,916 INFO L136 LiptonReduction]: Total number of compositions: 152 [2022-12-13 16:26:59,927 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 16:26:59,931 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;@6d7ff2aa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 16:26:59,931 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-12-13 16:26:59,935 INFO L130 PetriNetUnfolder]: 4/21 cut-off events. [2022-12-13 16:26:59,935 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 16:26:59,935 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:26:59,936 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 16:26:59,936 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-12-13 16:26:59,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:26:59,940 INFO L85 PathProgramCache]: Analyzing trace with hash 398027413, now seen corresponding path program 1 times [2022-12-13 16:26:59,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:26:59,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724991781] [2022-12-13 16:26:59,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:26:59,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:27:00,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:27:00,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:27:00,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:27:00,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724991781] [2022-12-13 16:27:00,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724991781] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:27:00,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:27:00,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:27:00,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676069173] [2022-12-13 16:27:00,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:27:00,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:27:00,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:27:00,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:27:00,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:27:00,252 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 304 [2022-12-13 16:27:00,255 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 32 transitions, 67 flow. Second operand has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:00,255 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:27:00,255 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 304 [2022-12-13 16:27:00,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:27:00,382 INFO L130 PetriNetUnfolder]: 232/421 cut-off events. [2022-12-13 16:27:00,382 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 16:27:00,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 846 conditions, 421 events. 232/421 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1572 event pairs, 97 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 837. Up to 335 conditions per place. [2022-12-13 16:27:00,386 INFO L137 encePairwiseOnDemand]: 297/304 looper letters, 41 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2022-12-13 16:27:00,386 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 46 transitions, 185 flow [2022-12-13 16:27:00,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:27:00,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:27:00,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 464 transitions. [2022-12-13 16:27:00,401 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5087719298245614 [2022-12-13 16:27:00,402 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 464 transitions. [2022-12-13 16:27:00,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 464 transitions. [2022-12-13 16:27:00,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:27:00,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 464 transitions. [2022-12-13 16:27:00,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:00,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 304.0) internal successors, (1216), 4 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:00,418 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 304.0) internal successors, (1216), 4 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:00,419 INFO L175 Difference]: Start difference. First operand has 30 places, 32 transitions, 67 flow. Second operand 3 states and 464 transitions. [2022-12-13 16:27:00,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 46 transitions, 185 flow [2022-12-13 16:27:00,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 46 transitions, 184 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:27:00,424 INFO L231 Difference]: Finished difference. Result has 32 places, 33 transitions, 92 flow [2022-12-13 16:27:00,426 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=32, PETRI_TRANSITIONS=33} [2022-12-13 16:27:00,430 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2022-12-13 16:27:00,430 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 33 transitions, 92 flow [2022-12-13 16:27:00,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:00,431 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:27:00,431 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 16:27:00,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 16:27:00,431 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-12-13 16:27:00,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:27:00,432 INFO L85 PathProgramCache]: Analyzing trace with hash 398027412, now seen corresponding path program 1 times [2022-12-13 16:27:00,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:27:00,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345082722] [2022-12-13 16:27:00,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:27:00,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:27:00,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:27:00,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:27:00,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:27:00,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345082722] [2022-12-13 16:27:00,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345082722] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:27:00,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:27:00,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:27:00,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484079888] [2022-12-13 16:27:00,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:27:00,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 16:27:00,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:27:00,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 16:27:00,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:27:00,750 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 304 [2022-12-13 16:27:00,752 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 33 transitions, 92 flow. Second operand has 5 states, 5 states have (on average 137.2) internal successors, (686), 5 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:00,752 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:27:00,752 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 304 [2022-12-13 16:27:00,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:27:00,924 INFO L130 PetriNetUnfolder]: 422/753 cut-off events. [2022-12-13 16:27:00,924 INFO L131 PetriNetUnfolder]: For 217/217 co-relation queries the response was YES. [2022-12-13 16:27:00,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1761 conditions, 753 events. 422/753 cut-off events. For 217/217 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3104 event pairs, 65 based on Foata normal form. 44/622 useless extension candidates. Maximal degree in co-relation 1751. Up to 385 conditions per place. [2022-12-13 16:27:00,927 INFO L137 encePairwiseOnDemand]: 297/304 looper letters, 74 selfloop transitions, 11 changer transitions 0/86 dead transitions. [2022-12-13 16:27:00,928 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 86 transitions, 402 flow [2022-12-13 16:27:00,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 16:27:00,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 16:27:00,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 762 transitions. [2022-12-13 16:27:00,931 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5013157894736842 [2022-12-13 16:27:00,931 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 762 transitions. [2022-12-13 16:27:00,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 762 transitions. [2022-12-13 16:27:00,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:27:00,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 762 transitions. [2022-12-13 16:27:00,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 152.4) internal successors, (762), 5 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:00,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 304.0) internal successors, (1824), 6 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:00,936 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 304.0) internal successors, (1824), 6 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:00,936 INFO L175 Difference]: Start difference. First operand has 32 places, 33 transitions, 92 flow. Second operand 5 states and 762 transitions. [2022-12-13 16:27:00,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 86 transitions, 402 flow [2022-12-13 16:27:00,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 86 transitions, 382 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 16:27:00,939 INFO L231 Difference]: Finished difference. Result has 38 places, 43 transitions, 186 flow [2022-12-13 16:27:00,939 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=186, PETRI_PLACES=38, PETRI_TRANSITIONS=43} [2022-12-13 16:27:00,939 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 8 predicate places. [2022-12-13 16:27:00,939 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 43 transitions, 186 flow [2022-12-13 16:27:00,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 137.2) internal successors, (686), 5 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:00,940 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:27:00,940 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:27:00,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 16:27:00,940 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-12-13 16:27:00,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:27:00,941 INFO L85 PathProgramCache]: Analyzing trace with hash 454422558, now seen corresponding path program 1 times [2022-12-13 16:27:00,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:27:00,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895541650] [2022-12-13 16:27:00,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:27:00,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:27:00,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:27:01,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:27:01,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:27:01,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895541650] [2022-12-13 16:27:01,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895541650] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:27:01,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:27:01,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:27:01,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169617703] [2022-12-13 16:27:01,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:27:01,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:27:01,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:27:01,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:27:01,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:27:01,102 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 304 [2022-12-13 16:27:01,103 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 43 transitions, 186 flow. Second operand has 4 states, 4 states have (on average 137.75) internal successors, (551), 4 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:01,103 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:27:01,104 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 304 [2022-12-13 16:27:01,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:27:01,240 INFO L130 PetriNetUnfolder]: 269/495 cut-off events. [2022-12-13 16:27:01,240 INFO L131 PetriNetUnfolder]: For 439/439 co-relation queries the response was YES. [2022-12-13 16:27:01,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1318 conditions, 495 events. 269/495 cut-off events. For 439/439 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1805 event pairs, 108 based on Foata normal form. 0/406 useless extension candidates. Maximal degree in co-relation 1303. Up to 387 conditions per place. [2022-12-13 16:27:01,244 INFO L137 encePairwiseOnDemand]: 299/304 looper letters, 53 selfloop transitions, 7 changer transitions 3/64 dead transitions. [2022-12-13 16:27:01,244 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 64 transitions, 370 flow [2022-12-13 16:27:01,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 16:27:01,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 16:27:01,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 740 transitions. [2022-12-13 16:27:01,246 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2022-12-13 16:27:01,246 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 740 transitions. [2022-12-13 16:27:01,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 740 transitions. [2022-12-13 16:27:01,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:27:01,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 740 transitions. [2022-12-13 16:27:01,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:01,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 304.0) internal successors, (1824), 6 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:01,261 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 304.0) internal successors, (1824), 6 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:01,261 INFO L175 Difference]: Start difference. First operand has 38 places, 43 transitions, 186 flow. Second operand 5 states and 740 transitions. [2022-12-13 16:27:01,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 64 transitions, 370 flow [2022-12-13 16:27:01,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 64 transitions, 334 flow, removed 5 selfloop flow, removed 3 redundant places. [2022-12-13 16:27:01,265 INFO L231 Difference]: Finished difference. Result has 43 places, 40 transitions, 177 flow [2022-12-13 16:27:01,265 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=177, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2022-12-13 16:27:01,265 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 13 predicate places. [2022-12-13 16:27:01,265 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 177 flow [2022-12-13 16:27:01,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 137.75) internal successors, (551), 4 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:01,266 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:27:01,266 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:27:01,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 16:27:01,266 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-12-13 16:27:01,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:27:01,267 INFO L85 PathProgramCache]: Analyzing trace with hash -770820790, now seen corresponding path program 1 times [2022-12-13 16:27:01,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:27:01,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262668474] [2022-12-13 16:27:01,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:27:01,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:27:01,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:27:01,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:27:01,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:27:01,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262668474] [2022-12-13 16:27:01,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262668474] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:27:01,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:27:01,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:27:01,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913090791] [2022-12-13 16:27:01,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:27:01,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:27:01,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:27:01,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:27:01,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:27:01,306 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 304 [2022-12-13 16:27:01,307 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 177 flow. Second operand has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:01,307 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:27:01,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 304 [2022-12-13 16:27:01,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:27:01,421 INFO L130 PetriNetUnfolder]: 301/555 cut-off events. [2022-12-13 16:27:01,422 INFO L131 PetriNetUnfolder]: For 369/369 co-relation queries the response was YES. [2022-12-13 16:27:01,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1505 conditions, 555 events. 301/555 cut-off events. For 369/369 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2224 event pairs, 74 based on Foata normal form. 0/476 useless extension candidates. Maximal degree in co-relation 1487. Up to 476 conditions per place. [2022-12-13 16:27:01,424 INFO L137 encePairwiseOnDemand]: 300/304 looper letters, 56 selfloop transitions, 2 changer transitions 1/60 dead transitions. [2022-12-13 16:27:01,424 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 60 transitions, 357 flow [2022-12-13 16:27:01,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:27:01,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:27:01,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 471 transitions. [2022-12-13 16:27:01,426 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5164473684210527 [2022-12-13 16:27:01,426 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 471 transitions. [2022-12-13 16:27:01,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 471 transitions. [2022-12-13 16:27:01,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:27:01,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 471 transitions. [2022-12-13 16:27:01,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:01,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 304.0) internal successors, (1216), 4 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:01,429 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 304.0) internal successors, (1216), 4 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:01,429 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 177 flow. Second operand 3 states and 471 transitions. [2022-12-13 16:27:01,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 60 transitions, 357 flow [2022-12-13 16:27:01,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 60 transitions, 357 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 16:27:01,431 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 191 flow [2022-12-13 16:27:01,431 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=191, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2022-12-13 16:27:01,432 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 16 predicate places. [2022-12-13 16:27:01,432 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 191 flow [2022-12-13 16:27:01,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:01,432 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:27:01,432 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:27:01,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 16:27:01,432 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-12-13 16:27:01,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:27:01,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1670553804, now seen corresponding path program 1 times [2022-12-13 16:27:01,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:27:01,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376803450] [2022-12-13 16:27:01,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:27:01,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:27:01,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:27:01,555 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:27:01,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:27:01,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376803450] [2022-12-13 16:27:01,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376803450] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:27:01,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174639259] [2022-12-13 16:27:01,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:27:01,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:27:01,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:27:01,557 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:27:01,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 16:27:01,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:27:01,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-13 16:27:01,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:27:01,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 16:27:01,801 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:27:01,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:27:01,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2022-12-13 16:27:01,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:27:01,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174639259] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:27:01,862 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:27:01,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2022-12-13 16:27:01,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725095740] [2022-12-13 16:27:01,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:27:01,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 16:27:01,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:27:01,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 16:27:01,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-12-13 16:27:02,141 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 304 [2022-12-13 16:27:02,143 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 191 flow. Second operand has 12 states, 12 states have (on average 138.5) internal successors, (1662), 12 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:02,143 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:27:02,143 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 304 [2022-12-13 16:27:02,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:27:02,258 INFO L130 PetriNetUnfolder]: 270/497 cut-off events. [2022-12-13 16:27:02,258 INFO L131 PetriNetUnfolder]: For 429/429 co-relation queries the response was YES. [2022-12-13 16:27:02,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1406 conditions, 497 events. 270/497 cut-off events. For 429/429 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1812 event pairs, 146 based on Foata normal form. 27/450 useless extension candidates. Maximal degree in co-relation 1386. Up to 479 conditions per place. [2022-12-13 16:27:02,260 INFO L137 encePairwiseOnDemand]: 301/304 looper letters, 39 selfloop transitions, 2 changer transitions 1/43 dead transitions. [2022-12-13 16:27:02,260 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 43 transitions, 279 flow [2022-12-13 16:27:02,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:27:02,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 16:27:02,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 578 transitions. [2022-12-13 16:27:02,262 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4753289473684211 [2022-12-13 16:27:02,262 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 578 transitions. [2022-12-13 16:27:02,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 578 transitions. [2022-12-13 16:27:02,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:27:02,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 578 transitions. [2022-12-13 16:27:02,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 144.5) internal successors, (578), 4 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:02,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 304.0) internal successors, (1520), 5 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:02,265 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 304.0) internal successors, (1520), 5 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:02,265 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 191 flow. Second operand 4 states and 578 transitions. [2022-12-13 16:27:02,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 43 transitions, 279 flow [2022-12-13 16:27:02,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 43 transitions, 270 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-12-13 16:27:02,267 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 176 flow [2022-12-13 16:27:02,268 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=176, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2022-12-13 16:27:02,268 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 16 predicate places. [2022-12-13 16:27:02,268 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 176 flow [2022-12-13 16:27:02,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 138.5) internal successors, (1662), 12 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:02,269 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:27:02,269 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:27:02,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 16:27:02,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:27:02,471 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-12-13 16:27:02,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:27:02,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1242864645, now seen corresponding path program 1 times [2022-12-13 16:27:02,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:27:02,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248835229] [2022-12-13 16:27:02,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:27:02,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:27:02,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:27:02,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:27:02,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:27:02,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248835229] [2022-12-13 16:27:02,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248835229] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:27:02,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:27:02,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 16:27:02,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121717800] [2022-12-13 16:27:02,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:27:02,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 16:27:02,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:27:02,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 16:27:02,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:27:02,776 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 304 [2022-12-13 16:27:02,777 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 176 flow. Second operand has 5 states, 5 states have (on average 136.4) internal successors, (682), 5 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:02,777 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:27:02,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 304 [2022-12-13 16:27:02,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:27:03,030 INFO L130 PetriNetUnfolder]: 673/1202 cut-off events. [2022-12-13 16:27:03,030 INFO L131 PetriNetUnfolder]: For 745/745 co-relation queries the response was YES. [2022-12-13 16:27:03,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3245 conditions, 1202 events. 673/1202 cut-off events. For 745/745 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5623 event pairs, 124 based on Foata normal form. 0/1008 useless extension candidates. Maximal degree in co-relation 3225. Up to 475 conditions per place. [2022-12-13 16:27:03,035 INFO L137 encePairwiseOnDemand]: 296/304 looper letters, 109 selfloop transitions, 16 changer transitions 0/126 dead transitions. [2022-12-13 16:27:03,036 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 126 transitions, 758 flow [2022-12-13 16:27:03,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 16:27:03,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 16:27:03,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 908 transitions. [2022-12-13 16:27:03,038 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49780701754385964 [2022-12-13 16:27:03,038 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 908 transitions. [2022-12-13 16:27:03,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 908 transitions. [2022-12-13 16:27:03,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:27:03,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 908 transitions. [2022-12-13 16:27:03,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 151.33333333333334) internal successors, (908), 6 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:03,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 304.0) internal successors, (2128), 7 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:03,042 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 304.0) internal successors, (2128), 7 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:03,042 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 176 flow. Second operand 6 states and 908 transitions. [2022-12-13 16:27:03,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 126 transitions, 758 flow [2022-12-13 16:27:03,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 126 transitions, 753 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 16:27:03,045 INFO L231 Difference]: Finished difference. Result has 54 places, 54 transitions, 319 flow [2022-12-13 16:27:03,046 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=319, PETRI_PLACES=54, PETRI_TRANSITIONS=54} [2022-12-13 16:27:03,046 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 24 predicate places. [2022-12-13 16:27:03,046 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 54 transitions, 319 flow [2022-12-13 16:27:03,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 136.4) internal successors, (682), 5 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:03,047 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:27:03,047 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:27:03,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 16:27:03,047 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-12-13 16:27:03,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:27:03,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1056112965, now seen corresponding path program 2 times [2022-12-13 16:27:03,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:27:03,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781473755] [2022-12-13 16:27:03,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:27:03,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:27:03,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:27:03,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:27:03,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:27:03,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781473755] [2022-12-13 16:27:03,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781473755] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:27:03,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:27:03,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 16:27:03,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078725944] [2022-12-13 16:27:03,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:27:03,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 16:27:03,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:27:03,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 16:27:03,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:27:03,273 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 304 [2022-12-13 16:27:03,275 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 54 transitions, 319 flow. Second operand has 5 states, 5 states have (on average 137.4) internal successors, (687), 5 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:03,275 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:27:03,275 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 304 [2022-12-13 16:27:03,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:27:03,594 INFO L130 PetriNetUnfolder]: 1231/2149 cut-off events. [2022-12-13 16:27:03,594 INFO L131 PetriNetUnfolder]: For 2830/2830 co-relation queries the response was YES. [2022-12-13 16:27:03,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7019 conditions, 2149 events. 1231/2149 cut-off events. For 2830/2830 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 11412 event pairs, 355 based on Foata normal form. 17/2021 useless extension candidates. Maximal degree in co-relation 6996. Up to 1247 conditions per place. [2022-12-13 16:27:03,604 INFO L137 encePairwiseOnDemand]: 295/304 looper letters, 115 selfloop transitions, 32 changer transitions 2/150 dead transitions. [2022-12-13 16:27:03,604 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 150 transitions, 1111 flow [2022-12-13 16:27:03,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 16:27:03,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 16:27:03,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1047 transitions. [2022-12-13 16:27:03,609 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49201127819548873 [2022-12-13 16:27:03,609 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1047 transitions. [2022-12-13 16:27:03,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1047 transitions. [2022-12-13 16:27:03,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:27:03,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1047 transitions. [2022-12-13 16:27:03,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 149.57142857142858) internal successors, (1047), 7 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:03,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 304.0) internal successors, (2432), 8 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:03,613 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 304.0) internal successors, (2432), 8 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:03,613 INFO L175 Difference]: Start difference. First operand has 54 places, 54 transitions, 319 flow. Second operand 7 states and 1047 transitions. [2022-12-13 16:27:03,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 150 transitions, 1111 flow [2022-12-13 16:27:03,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 150 transitions, 1103 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-12-13 16:27:03,619 INFO L231 Difference]: Finished difference. Result has 64 places, 82 transitions, 680 flow [2022-12-13 16:27:03,619 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=680, PETRI_PLACES=64, PETRI_TRANSITIONS=82} [2022-12-13 16:27:03,619 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 34 predicate places. [2022-12-13 16:27:03,619 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 82 transitions, 680 flow [2022-12-13 16:27:03,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 137.4) internal successors, (687), 5 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:03,620 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:27:03,620 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:27:03,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 16:27:03,620 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-12-13 16:27:03,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:27:03,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1118353052, now seen corresponding path program 1 times [2022-12-13 16:27:03,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:27:03,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798530143] [2022-12-13 16:27:03,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:27:03,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:27:03,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:27:03,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:27:03,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:27:03,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798530143] [2022-12-13 16:27:03,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798530143] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:27:03,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:27:03,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:27:03,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612300510] [2022-12-13 16:27:03,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:27:03,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:27:03,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:27:03,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:27:03,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:27:03,686 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 304 [2022-12-13 16:27:03,687 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 82 transitions, 680 flow. Second operand has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:03,687 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:27:03,687 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 304 [2022-12-13 16:27:03,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:27:03,994 INFO L130 PetriNetUnfolder]: 1313/2397 cut-off events. [2022-12-13 16:27:03,995 INFO L131 PetriNetUnfolder]: For 7333/7333 co-relation queries the response was YES. [2022-12-13 16:27:03,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8661 conditions, 2397 events. 1313/2397 cut-off events. For 7333/7333 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 13757 event pairs, 226 based on Foata normal form. 210/2414 useless extension candidates. Maximal degree in co-relation 8633. Up to 1475 conditions per place. [2022-12-13 16:27:04,014 INFO L137 encePairwiseOnDemand]: 298/304 looper letters, 87 selfloop transitions, 18 changer transitions 0/106 dead transitions. [2022-12-13 16:27:04,014 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 106 transitions, 1040 flow [2022-12-13 16:27:04,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:27:04,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:27:04,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 457 transitions. [2022-12-13 16:27:04,016 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5010964912280702 [2022-12-13 16:27:04,016 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 457 transitions. [2022-12-13 16:27:04,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 457 transitions. [2022-12-13 16:27:04,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:27:04,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 457 transitions. [2022-12-13 16:27:04,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:04,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 304.0) internal successors, (1216), 4 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:04,018 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 304.0) internal successors, (1216), 4 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:04,018 INFO L175 Difference]: Start difference. First operand has 64 places, 82 transitions, 680 flow. Second operand 3 states and 457 transitions. [2022-12-13 16:27:04,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 106 transitions, 1040 flow [2022-12-13 16:27:04,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 106 transitions, 1038 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-12-13 16:27:04,024 INFO L231 Difference]: Finished difference. Result has 68 places, 87 transitions, 836 flow [2022-12-13 16:27:04,024 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=618, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=836, PETRI_PLACES=68, PETRI_TRANSITIONS=87} [2022-12-13 16:27:04,025 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 38 predicate places. [2022-12-13 16:27:04,025 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 87 transitions, 836 flow [2022-12-13 16:27:04,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:04,025 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:27:04,025 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:27:04,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 16:27:04,026 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-12-13 16:27:04,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:27:04,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1118353051, now seen corresponding path program 3 times [2022-12-13 16:27:04,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:27:04,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673156768] [2022-12-13 16:27:04,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:27:04,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:27:04,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:27:04,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:27:04,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:27:04,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673156768] [2022-12-13 16:27:04,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673156768] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:27:04,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:27:04,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 16:27:04,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78308812] [2022-12-13 16:27:04,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:27:04,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 16:27:04,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:27:04,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 16:27:04,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:27:04,220 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 304 [2022-12-13 16:27:04,221 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 87 transitions, 836 flow. Second operand has 5 states, 5 states have (on average 136.4) internal successors, (682), 5 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:04,221 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:27:04,221 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 304 [2022-12-13 16:27:04,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:27:04,542 INFO L130 PetriNetUnfolder]: 1290/2328 cut-off events. [2022-12-13 16:27:04,542 INFO L131 PetriNetUnfolder]: For 8978/8978 co-relation queries the response was YES. [2022-12-13 16:27:04,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9279 conditions, 2328 events. 1290/2328 cut-off events. For 8978/8978 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 12839 event pairs, 566 based on Foata normal form. 19/2164 useless extension candidates. Maximal degree in co-relation 9249. Up to 2288 conditions per place. [2022-12-13 16:27:04,554 INFO L137 encePairwiseOnDemand]: 300/304 looper letters, 92 selfloop transitions, 7 changer transitions 3/103 dead transitions. [2022-12-13 16:27:04,554 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 103 transitions, 1110 flow [2022-12-13 16:27:04,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 16:27:04,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 16:27:04,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 852 transitions. [2022-12-13 16:27:04,556 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46710526315789475 [2022-12-13 16:27:04,556 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 852 transitions. [2022-12-13 16:27:04,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 852 transitions. [2022-12-13 16:27:04,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:27:04,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 852 transitions. [2022-12-13 16:27:04,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:04,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 304.0) internal successors, (2128), 7 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:04,560 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 304.0) internal successors, (2128), 7 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:04,560 INFO L175 Difference]: Start difference. First operand has 68 places, 87 transitions, 836 flow. Second operand 6 states and 852 transitions. [2022-12-13 16:27:04,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 103 transitions, 1110 flow [2022-12-13 16:27:04,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 103 transitions, 1039 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-12-13 16:27:04,570 INFO L231 Difference]: Finished difference. Result has 68 places, 86 transitions, 771 flow [2022-12-13 16:27:04,570 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=757, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=771, PETRI_PLACES=68, PETRI_TRANSITIONS=86} [2022-12-13 16:27:04,570 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 38 predicate places. [2022-12-13 16:27:04,571 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 86 transitions, 771 flow [2022-12-13 16:27:04,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 136.4) internal successors, (682), 5 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:04,571 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:27:04,571 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:27:04,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 16:27:04,571 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-12-13 16:27:04,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:27:04,572 INFO L85 PathProgramCache]: Analyzing trace with hash 247562148, now seen corresponding path program 1 times [2022-12-13 16:27:04,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:27:04,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355036845] [2022-12-13 16:27:04,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:27:04,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:27:04,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:27:04,600 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:27:04,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:27:04,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355036845] [2022-12-13 16:27:04,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355036845] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:27:04,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890554048] [2022-12-13 16:27:04,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:27:04,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:27:04,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:27:04,602 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:27:04,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 16:27:04,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:27:04,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 16:27:04,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:27:04,683 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:27:04,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:27:04,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:27:04,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890554048] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:27:04,701 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:27:04,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 16:27:04,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046409073] [2022-12-13 16:27:04,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:27:04,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:27:04,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:27:04,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:27:04,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:27:04,717 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 304 [2022-12-13 16:27:04,718 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 86 transitions, 771 flow. Second operand has 7 states, 7 states have (on average 144.42857142857142) internal successors, (1011), 7 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:04,718 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:27:04,718 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 304 [2022-12-13 16:27:04,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:27:05,579 INFO L130 PetriNetUnfolder]: 4087/7112 cut-off events. [2022-12-13 16:27:05,580 INFO L131 PetriNetUnfolder]: For 21142/21142 co-relation queries the response was YES. [2022-12-13 16:27:05,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27240 conditions, 7112 events. 4087/7112 cut-off events. For 21142/21142 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 44212 event pairs, 642 based on Foata normal form. 0/6661 useless extension candidates. Maximal degree in co-relation 27211. Up to 1935 conditions per place. [2022-12-13 16:27:05,614 INFO L137 encePairwiseOnDemand]: 300/304 looper letters, 345 selfloop transitions, 9 changer transitions 2/357 dead transitions. [2022-12-13 16:27:05,614 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 357 transitions, 3859 flow [2022-12-13 16:27:05,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 16:27:05,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 16:27:05,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1107 transitions. [2022-12-13 16:27:05,617 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5202067669172933 [2022-12-13 16:27:05,617 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1107 transitions. [2022-12-13 16:27:05,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1107 transitions. [2022-12-13 16:27:05,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:27:05,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1107 transitions. [2022-12-13 16:27:05,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 158.14285714285714) internal successors, (1107), 7 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:05,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 304.0) internal successors, (2432), 8 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:05,625 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 304.0) internal successors, (2432), 8 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:05,625 INFO L175 Difference]: Start difference. First operand has 68 places, 86 transitions, 771 flow. Second operand 7 states and 1107 transitions. [2022-12-13 16:27:05,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 357 transitions, 3859 flow [2022-12-13 16:27:05,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 357 transitions, 3839 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-12-13 16:27:05,642 INFO L231 Difference]: Finished difference. Result has 74 places, 92 transitions, 818 flow [2022-12-13 16:27:05,642 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=759, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=818, PETRI_PLACES=74, PETRI_TRANSITIONS=92} [2022-12-13 16:27:05,643 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 44 predicate places. [2022-12-13 16:27:05,643 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 92 transitions, 818 flow [2022-12-13 16:27:05,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 144.42857142857142) internal successors, (1011), 7 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:05,644 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:27:05,644 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:27:05,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-13 16:27:05,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 16:27:05,845 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-12-13 16:27:05,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:27:05,845 INFO L85 PathProgramCache]: Analyzing trace with hash 247562123, now seen corresponding path program 1 times [2022-12-13 16:27:05,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:27:05,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528633989] [2022-12-13 16:27:05,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:27:05,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:27:05,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:27:05,935 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:27:05,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:27:05,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528633989] [2022-12-13 16:27:05,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528633989] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:27:05,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165053996] [2022-12-13 16:27:05,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:27:05,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:27:05,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:27:05,939 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:27:05,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 16:27:06,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:27:06,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 16:27:06,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:27:06,027 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:27:06,028 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:27:06,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165053996] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:27:06,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:27:06,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-12-13 16:27:06,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011539601] [2022-12-13 16:27:06,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:27:06,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:27:06,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:27:06,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:27:06,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:27:06,039 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 304 [2022-12-13 16:27:06,040 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 92 transitions, 818 flow. Second operand has 4 states, 4 states have (on average 143.25) internal successors, (573), 4 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:06,040 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:27:06,040 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 304 [2022-12-13 16:27:06,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:27:06,726 INFO L130 PetriNetUnfolder]: 3709/6643 cut-off events. [2022-12-13 16:27:06,726 INFO L131 PetriNetUnfolder]: For 22136/22136 co-relation queries the response was YES. [2022-12-13 16:27:06,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26648 conditions, 6643 events. 3709/6643 cut-off events. For 22136/22136 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 42982 event pairs, 965 based on Foata normal form. 178/6821 useless extension candidates. Maximal degree in co-relation 26618. Up to 6403 conditions per place. [2022-12-13 16:27:06,757 INFO L137 encePairwiseOnDemand]: 301/304 looper letters, 114 selfloop transitions, 2 changer transitions 1/118 dead transitions. [2022-12-13 16:27:06,757 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 118 transitions, 1255 flow [2022-12-13 16:27:06,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:27:06,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 16:27:06,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 606 transitions. [2022-12-13 16:27:06,759 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49835526315789475 [2022-12-13 16:27:06,759 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 606 transitions. [2022-12-13 16:27:06,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 606 transitions. [2022-12-13 16:27:06,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:27:06,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 606 transitions. [2022-12-13 16:27:06,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 151.5) internal successors, (606), 4 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:06,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 304.0) internal successors, (1520), 5 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:06,763 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 304.0) internal successors, (1520), 5 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:06,764 INFO L175 Difference]: Start difference. First operand has 74 places, 92 transitions, 818 flow. Second operand 4 states and 606 transitions. [2022-12-13 16:27:06,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 118 transitions, 1255 flow [2022-12-13 16:27:06,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 118 transitions, 1247 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-12-13 16:27:06,780 INFO L231 Difference]: Finished difference. Result has 74 places, 88 transitions, 787 flow [2022-12-13 16:27:06,780 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=783, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=787, PETRI_PLACES=74, PETRI_TRANSITIONS=88} [2022-12-13 16:27:06,781 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 44 predicate places. [2022-12-13 16:27:06,781 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 88 transitions, 787 flow [2022-12-13 16:27:06,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 143.25) internal successors, (573), 4 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:06,781 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:27:06,781 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:27:06,786 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 16:27:06,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:27:06,982 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-12-13 16:27:06,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:27:06,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1303879206, now seen corresponding path program 1 times [2022-12-13 16:27:06,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:27:06,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518444762] [2022-12-13 16:27:06,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:27:06,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:27:06,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:27:07,181 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:27:07,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:27:07,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518444762] [2022-12-13 16:27:07,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518444762] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:27:07,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989041061] [2022-12-13 16:27:07,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:27:07,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:27:07,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:27:07,183 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:27:07,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 16:27:07,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:27:07,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 40 conjunts are in the unsatisfiable core [2022-12-13 16:27:07,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:27:07,355 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 16:27:07,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-12-13 16:27:07,518 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:27:07,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:27:07,694 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:27:07,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989041061] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 16:27:07,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 16:27:07,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 8] total 18 [2022-12-13 16:27:07,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305134439] [2022-12-13 16:27:07,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:27:07,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 16:27:07,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:27:07,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 16:27:07,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2022-12-13 16:27:08,190 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 304 [2022-12-13 16:27:08,191 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 88 transitions, 787 flow. Second operand has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:08,191 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:27:08,191 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 304 [2022-12-13 16:27:08,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:27:09,399 INFO L130 PetriNetUnfolder]: 5432/9774 cut-off events. [2022-12-13 16:27:09,399 INFO L131 PetriNetUnfolder]: For 34651/34651 co-relation queries the response was YES. [2022-12-13 16:27:09,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39356 conditions, 9774 events. 5432/9774 cut-off events. For 34651/34651 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 68669 event pairs, 852 based on Foata normal form. 125/9898 useless extension candidates. Maximal degree in co-relation 39325. Up to 4900 conditions per place. [2022-12-13 16:27:09,436 INFO L137 encePairwiseOnDemand]: 294/304 looper letters, 121 selfloop transitions, 63 changer transitions 1/186 dead transitions. [2022-12-13 16:27:09,436 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 186 transitions, 1937 flow [2022-12-13 16:27:09,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 16:27:09,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 16:27:09,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 727 transitions. [2022-12-13 16:27:09,438 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47828947368421054 [2022-12-13 16:27:09,438 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 727 transitions. [2022-12-13 16:27:09,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 727 transitions. [2022-12-13 16:27:09,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:27:09,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 727 transitions. [2022-12-13 16:27:09,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 145.4) internal successors, (727), 5 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:09,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 304.0) internal successors, (1824), 6 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:09,440 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 304.0) internal successors, (1824), 6 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:09,440 INFO L175 Difference]: Start difference. First operand has 74 places, 88 transitions, 787 flow. Second operand 5 states and 727 transitions. [2022-12-13 16:27:09,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 186 transitions, 1937 flow [2022-12-13 16:27:09,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 186 transitions, 1930 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 16:27:09,455 INFO L231 Difference]: Finished difference. Result has 80 places, 132 transitions, 1507 flow [2022-12-13 16:27:09,455 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=784, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1507, PETRI_PLACES=80, PETRI_TRANSITIONS=132} [2022-12-13 16:27:09,456 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 50 predicate places. [2022-12-13 16:27:09,456 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 132 transitions, 1507 flow [2022-12-13 16:27:09,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:09,456 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:27:09,456 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:27:09,462 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 16:27:09,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:27:09,657 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-12-13 16:27:09,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:27:09,657 INFO L85 PathProgramCache]: Analyzing trace with hash -701601616, now seen corresponding path program 2 times [2022-12-13 16:27:09,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:27:09,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591784682] [2022-12-13 16:27:09,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:27:09,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:27:09,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:27:09,807 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:27:09,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:27:09,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591784682] [2022-12-13 16:27:09,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591784682] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:27:09,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607985072] [2022-12-13 16:27:09,807 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 16:27:09,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:27:09,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:27:09,808 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:27:09,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 16:27:09,881 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 16:27:09,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:27:09,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 16:27:09,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:27:09,932 INFO L321 Elim1Store]: treesize reduction 16, result has 63.6 percent of original size [2022-12-13 16:27:09,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 43 [2022-12-13 16:27:09,961 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 16:27:09,961 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:27:09,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607985072] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:27:09,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:27:09,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2022-12-13 16:27:09,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934327672] [2022-12-13 16:27:09,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:27:09,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 16:27:09,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:27:09,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 16:27:09,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-12-13 16:27:10,027 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 304 [2022-12-13 16:27:10,028 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 132 transitions, 1507 flow. Second operand has 5 states, 5 states have (on average 136.2) internal successors, (681), 5 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:10,028 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:27:10,028 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 304 [2022-12-13 16:27:10,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:27:11,221 INFO L130 PetriNetUnfolder]: 5240/9753 cut-off events. [2022-12-13 16:27:11,221 INFO L131 PetriNetUnfolder]: For 58984/58984 co-relation queries the response was YES. [2022-12-13 16:27:11,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45472 conditions, 9753 events. 5240/9753 cut-off events. For 58984/58984 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 69697 event pairs, 1142 based on Foata normal form. 441/10193 useless extension candidates. Maximal degree in co-relation 45438. Up to 4567 conditions per place. [2022-12-13 16:27:11,260 INFO L137 encePairwiseOnDemand]: 296/304 looper letters, 106 selfloop transitions, 86 changer transitions 1/194 dead transitions. [2022-12-13 16:27:11,260 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 194 transitions, 2470 flow [2022-12-13 16:27:11,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 16:27:11,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 16:27:11,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 728 transitions. [2022-12-13 16:27:11,262 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4789473684210526 [2022-12-13 16:27:11,262 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 728 transitions. [2022-12-13 16:27:11,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 728 transitions. [2022-12-13 16:27:11,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:27:11,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 728 transitions. [2022-12-13 16:27:11,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 145.6) internal successors, (728), 5 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:11,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 304.0) internal successors, (1824), 6 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:11,265 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 304.0) internal successors, (1824), 6 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:11,265 INFO L175 Difference]: Start difference. First operand has 80 places, 132 transitions, 1507 flow. Second operand 5 states and 728 transitions. [2022-12-13 16:27:11,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 194 transitions, 2470 flow [2022-12-13 16:27:11,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 194 transitions, 2456 flow, removed 7 selfloop flow, removed 0 redundant places. [2022-12-13 16:27:11,315 INFO L231 Difference]: Finished difference. Result has 88 places, 149 transitions, 2114 flow [2022-12-13 16:27:11,315 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=1375, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2114, PETRI_PLACES=88, PETRI_TRANSITIONS=149} [2022-12-13 16:27:11,315 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 58 predicate places. [2022-12-13 16:27:11,315 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 149 transitions, 2114 flow [2022-12-13 16:27:11,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 136.2) internal successors, (681), 5 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:11,316 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:27:11,316 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:27:11,320 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 16:27:11,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:27:11,517 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-12-13 16:27:11,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:27:11,517 INFO L85 PathProgramCache]: Analyzing trace with hash 2073237558, now seen corresponding path program 1 times [2022-12-13 16:27:11,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:27:11,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252947379] [2022-12-13 16:27:11,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:27:11,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:27:11,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:27:11,654 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:27:11,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:27:11,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252947379] [2022-12-13 16:27:11,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252947379] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:27:11,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588486101] [2022-12-13 16:27:11,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:27:11,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:27:11,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:27:11,655 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:27:11,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 16:27:11,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:27:11,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 40 conjunts are in the unsatisfiable core [2022-12-13 16:27:11,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:27:11,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 16:27:11,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-12-13 16:27:11,953 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:27:11,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:27:12,031 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 16:27:12,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588486101] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 16:27:12,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 16:27:12,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 8] total 17 [2022-12-13 16:27:12,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462683947] [2022-12-13 16:27:12,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:27:12,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 16:27:12,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:27:12,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 16:27:12,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2022-12-13 16:27:12,277 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 304 [2022-12-13 16:27:12,278 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 149 transitions, 2114 flow. Second operand has 5 states, 5 states have (on average 135.4) internal successors, (677), 5 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:12,278 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:27:12,278 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 304 [2022-12-13 16:27:12,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:27:13,680 INFO L130 PetriNetUnfolder]: 5810/10863 cut-off events. [2022-12-13 16:27:13,680 INFO L131 PetriNetUnfolder]: For 93609/93609 co-relation queries the response was YES. [2022-12-13 16:27:13,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58345 conditions, 10863 events. 5810/10863 cut-off events. For 93609/93609 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 80001 event pairs, 2111 based on Foata normal form. 108/10970 useless extension candidates. Maximal degree in co-relation 58307. Up to 8568 conditions per place. [2022-12-13 16:27:13,730 INFO L137 encePairwiseOnDemand]: 297/304 looper letters, 136 selfloop transitions, 99 changer transitions 0/236 dead transitions. [2022-12-13 16:27:13,730 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 236 transitions, 3859 flow [2022-12-13 16:27:13,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 16:27:13,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 16:27:13,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 710 transitions. [2022-12-13 16:27:13,732 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46710526315789475 [2022-12-13 16:27:13,732 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 710 transitions. [2022-12-13 16:27:13,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 710 transitions. [2022-12-13 16:27:13,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:27:13,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 710 transitions. [2022-12-13 16:27:13,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:13,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 304.0) internal successors, (1824), 6 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:13,735 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 304.0) internal successors, (1824), 6 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:13,735 INFO L175 Difference]: Start difference. First operand has 88 places, 149 transitions, 2114 flow. Second operand 5 states and 710 transitions. [2022-12-13 16:27:13,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 236 transitions, 3859 flow [2022-12-13 16:27:13,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 236 transitions, 3835 flow, removed 12 selfloop flow, removed 0 redundant places. [2022-12-13 16:27:13,835 INFO L231 Difference]: Finished difference. Result has 95 places, 203 transitions, 3459 flow [2022-12-13 16:27:13,836 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=2102, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3459, PETRI_PLACES=95, PETRI_TRANSITIONS=203} [2022-12-13 16:27:13,836 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 65 predicate places. [2022-12-13 16:27:13,836 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 203 transitions, 3459 flow [2022-12-13 16:27:13,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 135.4) internal successors, (677), 5 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:13,837 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:27:13,837 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:27:13,842 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 16:27:14,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 16:27:14,038 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-12-13 16:27:14,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:27:14,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1858366192, now seen corresponding path program 2 times [2022-12-13 16:27:14,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:27:14,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886789166] [2022-12-13 16:27:14,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:27:14,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:27:14,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:27:14,337 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:27:14,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:27:14,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886789166] [2022-12-13 16:27:14,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886789166] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:27:14,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678658205] [2022-12-13 16:27:14,338 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 16:27:14,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:27:14,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:27:14,339 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:27:14,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 16:27:14,414 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 16:27:14,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:27:14,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 16:27:14,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:27:14,470 INFO L321 Elim1Store]: treesize reduction 16, result has 63.6 percent of original size [2022-12-13 16:27:14,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 43 [2022-12-13 16:27:14,499 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 16:27:14,499 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:27:14,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678658205] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:27:14,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:27:14,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2022-12-13 16:27:14,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560936943] [2022-12-13 16:27:14,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:27:14,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 16:27:14,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:27:14,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 16:27:14,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-12-13 16:27:14,594 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 304 [2022-12-13 16:27:14,594 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 203 transitions, 3459 flow. Second operand has 5 states, 5 states have (on average 136.4) internal successors, (682), 5 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:14,594 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:27:14,595 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 304 [2022-12-13 16:27:14,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:27:16,357 INFO L130 PetriNetUnfolder]: 6316/11774 cut-off events. [2022-12-13 16:27:16,357 INFO L131 PetriNetUnfolder]: For 124807/124807 co-relation queries the response was YES. [2022-12-13 16:27:16,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69607 conditions, 11774 events. 6316/11774 cut-off events. For 124807/124807 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 87202 event pairs, 1643 based on Foata normal form. 124/11897 useless extension candidates. Maximal degree in co-relation 69565. Up to 7756 conditions per place. [2022-12-13 16:27:16,434 INFO L137 encePairwiseOnDemand]: 298/304 looper letters, 144 selfloop transitions, 172 changer transitions 0/317 dead transitions. [2022-12-13 16:27:16,435 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 317 transitions, 5799 flow [2022-12-13 16:27:16,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 16:27:16,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 16:27:16,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 722 transitions. [2022-12-13 16:27:16,437 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.475 [2022-12-13 16:27:16,437 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 722 transitions. [2022-12-13 16:27:16,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 722 transitions. [2022-12-13 16:27:16,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:27:16,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 722 transitions. [2022-12-13 16:27:16,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 144.4) internal successors, (722), 5 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:16,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 304.0) internal successors, (1824), 6 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:16,441 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 304.0) internal successors, (1824), 6 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:16,441 INFO L175 Difference]: Start difference. First operand has 95 places, 203 transitions, 3459 flow. Second operand 5 states and 722 transitions. [2022-12-13 16:27:16,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 317 transitions, 5799 flow [2022-12-13 16:27:16,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 317 transitions, 5757 flow, removed 21 selfloop flow, removed 0 redundant places. [2022-12-13 16:27:16,604 INFO L231 Difference]: Finished difference. Result has 102 places, 267 transitions, 5317 flow [2022-12-13 16:27:16,604 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=3435, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=5317, PETRI_PLACES=102, PETRI_TRANSITIONS=267} [2022-12-13 16:27:16,605 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 72 predicate places. [2022-12-13 16:27:16,605 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 267 transitions, 5317 flow [2022-12-13 16:27:16,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 136.4) internal successors, (682), 5 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:16,605 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:27:16,605 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:27:16,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-13 16:27:16,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 16:27:16,807 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-12-13 16:27:16,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:27:16,809 INFO L85 PathProgramCache]: Analyzing trace with hash -198981470, now seen corresponding path program 3 times [2022-12-13 16:27:16,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:27:16,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416959842] [2022-12-13 16:27:16,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:27:16,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:27:16,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:27:17,346 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:27:17,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:27:17,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416959842] [2022-12-13 16:27:17,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416959842] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:27:17,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080643718] [2022-12-13 16:27:17,346 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 16:27:17,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:27:17,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:27:17,348 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:27:17,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 16:27:17,432 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 16:27:17,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:27:17,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 16:27:17,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:27:17,475 INFO L321 Elim1Store]: treesize reduction 16, result has 63.6 percent of original size [2022-12-13 16:27:17,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 41 [2022-12-13 16:27:17,561 INFO L321 Elim1Store]: treesize reduction 16, result has 63.6 percent of original size [2022-12-13 16:27:17,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 45 [2022-12-13 16:27:17,592 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 16:27:17,592 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:27:17,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080643718] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:27:17,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:27:17,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2022-12-13 16:27:17,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460200308] [2022-12-13 16:27:17,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:27:17,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 16:27:17,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:27:17,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 16:27:17,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-12-13 16:27:17,690 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 304 [2022-12-13 16:27:17,691 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 267 transitions, 5317 flow. Second operand has 6 states, 6 states have (on average 134.83333333333334) internal successors, (809), 6 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:17,691 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:27:17,691 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 304 [2022-12-13 16:27:17,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:27:19,435 INFO L130 PetriNetUnfolder]: 6250/11591 cut-off events. [2022-12-13 16:27:19,435 INFO L131 PetriNetUnfolder]: For 140720/140720 co-relation queries the response was YES. [2022-12-13 16:27:19,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74056 conditions, 11591 events. 6250/11591 cut-off events. For 140720/140720 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 85328 event pairs, 1587 based on Foata normal form. 57/11647 useless extension candidates. Maximal degree in co-relation 74010. Up to 6760 conditions per place. [2022-12-13 16:27:19,494 INFO L137 encePairwiseOnDemand]: 298/304 looper letters, 109 selfloop transitions, 207 changer transitions 0/317 dead transitions. [2022-12-13 16:27:19,494 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 317 transitions, 6436 flow [2022-12-13 16:27:19,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 16:27:19,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 16:27:19,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 838 transitions. [2022-12-13 16:27:19,496 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4594298245614035 [2022-12-13 16:27:19,496 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 838 transitions. [2022-12-13 16:27:19,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 838 transitions. [2022-12-13 16:27:19,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:27:19,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 838 transitions. [2022-12-13 16:27:19,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 139.66666666666666) internal successors, (838), 6 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:19,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 304.0) internal successors, (2128), 7 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:19,500 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 304.0) internal successors, (2128), 7 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:19,500 INFO L175 Difference]: Start difference. First operand has 102 places, 267 transitions, 5317 flow. Second operand 6 states and 838 transitions. [2022-12-13 16:27:19,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 317 transitions, 6436 flow [2022-12-13 16:27:19,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 317 transitions, 6265 flow, removed 44 selfloop flow, removed 1 redundant places. [2022-12-13 16:27:19,735 INFO L231 Difference]: Finished difference. Result has 105 places, 272 transitions, 5663 flow [2022-12-13 16:27:19,735 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=5098, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5663, PETRI_PLACES=105, PETRI_TRANSITIONS=272} [2022-12-13 16:27:19,735 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 75 predicate places. [2022-12-13 16:27:19,735 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 272 transitions, 5663 flow [2022-12-13 16:27:19,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 134.83333333333334) internal successors, (809), 6 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:19,735 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:27:19,736 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:27:19,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-13 16:27:19,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 16:27:19,937 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-12-13 16:27:19,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:27:19,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1322658663, now seen corresponding path program 2 times [2022-12-13 16:27:19,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:27:19,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132104522] [2022-12-13 16:27:19,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:27:19,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:27:19,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:27:20,014 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:27:20,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:27:20,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132104522] [2022-12-13 16:27:20,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132104522] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:27:20,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847399903] [2022-12-13 16:27:20,015 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 16:27:20,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:27:20,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:27:20,016 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:27:20,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 16:27:20,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 16:27:20,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:27:20,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 16:27:20,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:27:20,144 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:27:20,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:27:20,191 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:27:20,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847399903] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:27:20,192 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:27:20,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-12-13 16:27:20,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822850453] [2022-12-13 16:27:20,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:27:20,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 16:27:20,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:27:20,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 16:27:20,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-13 16:27:20,212 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 304 [2022-12-13 16:27:20,213 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 272 transitions, 5663 flow. Second operand has 13 states, 13 states have (on average 144.23076923076923) internal successors, (1875), 13 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:20,214 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:27:20,214 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 304 [2022-12-13 16:27:20,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:27:25,617 INFO L130 PetriNetUnfolder]: 16072/29831 cut-off events. [2022-12-13 16:27:25,618 INFO L131 PetriNetUnfolder]: For 414184/414184 co-relation queries the response was YES. [2022-12-13 16:27:25,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197668 conditions, 29831 events. 16072/29831 cut-off events. For 414184/414184 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 230515 event pairs, 1887 based on Foata normal form. 1032/30863 useless extension candidates. Maximal degree in co-relation 197622. Up to 8168 conditions per place. [2022-12-13 16:27:25,822 INFO L137 encePairwiseOnDemand]: 301/304 looper letters, 2452 selfloop transitions, 11 changer transitions 2/2466 dead transitions. [2022-12-13 16:27:25,822 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 2466 transitions, 57494 flow [2022-12-13 16:27:25,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 16:27:25,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 16:27:25,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1916 transitions. [2022-12-13 16:27:25,825 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5252192982456141 [2022-12-13 16:27:25,825 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1916 transitions. [2022-12-13 16:27:25,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1916 transitions. [2022-12-13 16:27:25,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:27:25,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1916 transitions. [2022-12-13 16:27:25,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 159.66666666666666) internal successors, (1916), 12 states have internal predecessors, (1916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:25,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 304.0) internal successors, (3952), 13 states have internal predecessors, (3952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:25,831 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 304.0) internal successors, (3952), 13 states have internal predecessors, (3952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:25,831 INFO L175 Difference]: Start difference. First operand has 105 places, 272 transitions, 5663 flow. Second operand 12 states and 1916 transitions. [2022-12-13 16:27:25,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 2466 transitions, 57494 flow [2022-12-13 16:27:26,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 2466 transitions, 56840 flow, removed 327 selfloop flow, removed 0 redundant places. [2022-12-13 16:27:26,560 INFO L231 Difference]: Finished difference. Result has 122 places, 278 transitions, 5677 flow [2022-12-13 16:27:26,560 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=5593, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5677, PETRI_PLACES=122, PETRI_TRANSITIONS=278} [2022-12-13 16:27:26,560 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 92 predicate places. [2022-12-13 16:27:26,561 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 278 transitions, 5677 flow [2022-12-13 16:27:26,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 144.23076923076923) internal successors, (1875), 13 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:26,561 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:27:26,561 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:27:26,565 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 16:27:26,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 16:27:26,762 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-12-13 16:27:26,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:27:26,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1253036098, now seen corresponding path program 1 times [2022-12-13 16:27:26,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:27:26,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760265262] [2022-12-13 16:27:26,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:27:26,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:27:26,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:27:26,948 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:27:26,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:27:26,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760265262] [2022-12-13 16:27:26,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760265262] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:27:26,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700986613] [2022-12-13 16:27:26,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:27:26,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:27:26,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:27:26,950 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:27:26,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 16:27:27,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:27:27,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 53 conjunts are in the unsatisfiable core [2022-12-13 16:27:27,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:27:27,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 16:27:27,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-12-13 16:27:27,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-12-13 16:27:27,322 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 16:27:27,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:27:27,549 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 16:27:27,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700986613] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:27:27,549 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:27:27,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 7] total 23 [2022-12-13 16:27:27,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058303926] [2022-12-13 16:27:27,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:27:27,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 16:27:27,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:27:27,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 16:27:27,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=447, Unknown=0, NotChecked=0, Total=552 [2022-12-13 16:27:29,565 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 304 [2022-12-13 16:27:29,567 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 278 transitions, 5677 flow. Second operand has 24 states, 24 states have (on average 126.83333333333333) internal successors, (3044), 24 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:29,567 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:27:29,567 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 304 [2022-12-13 16:27:29,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:27:41,607 INFO L130 PetriNetUnfolder]: 30066/57228 cut-off events. [2022-12-13 16:27:41,608 INFO L131 PetriNetUnfolder]: For 804384/804384 co-relation queries the response was YES. [2022-12-13 16:27:41,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379039 conditions, 57228 events. 30066/57228 cut-off events. For 804384/804384 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 500809 event pairs, 2901 based on Foata normal form. 2728/59955 useless extension candidates. Maximal degree in co-relation 378986. Up to 14674 conditions per place. [2022-12-13 16:27:42,093 INFO L137 encePairwiseOnDemand]: 290/304 looper letters, 372 selfloop transitions, 556 changer transitions 15/944 dead transitions. [2022-12-13 16:27:42,094 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 944 transitions, 17774 flow [2022-12-13 16:27:42,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-13 16:27:42,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-13 16:27:42,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 4503 transitions. [2022-12-13 16:27:42,100 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43566176470588236 [2022-12-13 16:27:42,100 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 4503 transitions. [2022-12-13 16:27:42,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 4503 transitions. [2022-12-13 16:27:42,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:27:42,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 4503 transitions. [2022-12-13 16:27:42,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 132.44117647058823) internal successors, (4503), 34 states have internal predecessors, (4503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:42,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 304.0) internal successors, (10640), 35 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:42,115 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 304.0) internal successors, (10640), 35 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:42,115 INFO L175 Difference]: Start difference. First operand has 122 places, 278 transitions, 5677 flow. Second operand 34 states and 4503 transitions. [2022-12-13 16:27:42,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 944 transitions, 17774 flow [2022-12-13 16:27:44,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 944 transitions, 17089 flow, removed 156 selfloop flow, removed 6 redundant places. [2022-12-13 16:27:44,508 INFO L231 Difference]: Finished difference. Result has 164 places, 634 transitions, 14942 flow [2022-12-13 16:27:44,508 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=5485, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=14942, PETRI_PLACES=164, PETRI_TRANSITIONS=634} [2022-12-13 16:27:44,508 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 134 predicate places. [2022-12-13 16:27:44,508 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 634 transitions, 14942 flow [2022-12-13 16:27:44,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 126.83333333333333) internal successors, (3044), 24 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:44,509 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:27:44,509 INFO L209 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:27:44,514 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 16:27:44,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 16:27:44,710 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-12-13 16:27:44,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:27:44,712 INFO L85 PathProgramCache]: Analyzing trace with hash 2086575469, now seen corresponding path program 3 times [2022-12-13 16:27:44,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:27:44,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072723093] [2022-12-13 16:27:44,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:27:44,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:27:44,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:27:44,855 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:27:44,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:27:44,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072723093] [2022-12-13 16:27:44,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072723093] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:27:44,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350778888] [2022-12-13 16:27:44,856 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 16:27:44,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:27:44,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:27:44,857 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:27:44,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 16:27:44,970 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 16:27:44,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:27:44,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 50 conjunts are in the unsatisfiable core [2022-12-13 16:27:44,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:27:44,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-12-13 16:27:44,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:27:44,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 16:27:45,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-12-13 16:27:45,243 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 19 proven. 29 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-12-13 16:27:45,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:27:45,390 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 19 proven. 29 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-12-13 16:27:45,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350778888] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:27:45,390 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:27:45,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 6] total 23 [2022-12-13 16:27:45,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178267881] [2022-12-13 16:27:45,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:27:45,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 16:27:45,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:27:45,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 16:27:45,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2022-12-13 16:27:45,995 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 304 [2022-12-13 16:27:45,996 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 634 transitions, 14942 flow. Second operand has 23 states, 23 states have (on average 132.43478260869566) internal successors, (3046), 23 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:27:45,996 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:27:45,996 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 304 [2022-12-13 16:27:45,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:28:01,672 INFO L130 PetriNetUnfolder]: 29618/56098 cut-off events. [2022-12-13 16:28:01,672 INFO L131 PetriNetUnfolder]: For 1138507/1138507 co-relation queries the response was YES. [2022-12-13 16:28:02,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 452681 conditions, 56098 events. 29618/56098 cut-off events. For 1138507/1138507 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 475093 event pairs, 2821 based on Foata normal form. 587/56685 useless extension candidates. Maximal degree in co-relation 452611. Up to 14775 conditions per place. [2022-12-13 16:28:02,356 INFO L137 encePairwiseOnDemand]: 294/304 looper letters, 4510 selfloop transitions, 2743 changer transitions 0/7254 dead transitions. [2022-12-13 16:28:02,356 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 7254 transitions, 181141 flow [2022-12-13 16:28:02,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-13 16:28:02,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-12-13 16:28:02,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5118 transitions. [2022-12-13 16:28:02,361 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46765350877192985 [2022-12-13 16:28:02,361 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5118 transitions. [2022-12-13 16:28:02,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5118 transitions. [2022-12-13 16:28:02,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:28:02,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5118 transitions. [2022-12-13 16:28:02,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 142.16666666666666) internal successors, (5118), 36 states have internal predecessors, (5118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:28:02,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 304.0) internal successors, (11248), 37 states have internal predecessors, (11248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:28:02,376 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 304.0) internal successors, (11248), 37 states have internal predecessors, (11248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:28:02,376 INFO L175 Difference]: Start difference. First operand has 164 places, 634 transitions, 14942 flow. Second operand 36 states and 5118 transitions. [2022-12-13 16:28:02,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 7254 transitions, 181141 flow [2022-12-13 16:28:09,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 7254 transitions, 174488 flow, removed 3303 selfloop flow, removed 4 redundant places. [2022-12-13 16:28:10,022 INFO L231 Difference]: Finished difference. Result has 203 places, 3131 transitions, 89703 flow [2022-12-13 16:28:10,022 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=14347, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=634, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=267, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=89703, PETRI_PLACES=203, PETRI_TRANSITIONS=3131} [2022-12-13 16:28:10,023 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 173 predicate places. [2022-12-13 16:28:10,023 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 3131 transitions, 89703 flow [2022-12-13 16:28:10,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 132.43478260869566) internal successors, (3046), 23 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:28:10,023 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:28:10,023 INFO L209 CegarLoopForPetriNet]: trace histogram [12, 11, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1] [2022-12-13 16:28:10,028 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 16:28:10,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:28:10,224 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-12-13 16:28:10,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:28:10,224 INFO L85 PathProgramCache]: Analyzing trace with hash 681303868, now seen corresponding path program 4 times [2022-12-13 16:28:10,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:28:10,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434562094] [2022-12-13 16:28:10,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:28:10,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:28:10,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:28:10,375 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:28:10,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:28:10,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434562094] [2022-12-13 16:28:10,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434562094] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:28:10,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715450553] [2022-12-13 16:28:10,376 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 16:28:10,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:28:10,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:28:10,377 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:28:10,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 16:28:10,495 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 16:28:10,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:28:10,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 16:28:10,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:28:10,545 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:28:10,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:28:10,723 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:28:10,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715450553] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:28:10,724 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:28:10,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2022-12-13 16:28:10,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505797447] [2022-12-13 16:28:10,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:28:10,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-13 16:28:10,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:28:10,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-13 16:28:10,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2022-12-13 16:28:10,770 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 304 [2022-12-13 16:28:10,772 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 3131 transitions, 89703 flow. Second operand has 27 states, 27 states have (on average 144.40740740740742) internal successors, (3899), 27 states have internal predecessors, (3899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:28:10,772 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:28:10,772 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 304 [2022-12-13 16:28:10,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:29:36,910 INFO L130 PetriNetUnfolder]: 65797/124426 cut-off events. [2022-12-13 16:29:36,910 INFO L131 PetriNetUnfolder]: For 3029137/3029137 co-relation queries the response was YES. [2022-12-13 16:29:37,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1042229 conditions, 124426 events. 65797/124426 cut-off events. For 3029137/3029137 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 1066813 event pairs, 7076 based on Foata normal form. 4940/129366 useless extension candidates. Maximal degree in co-relation 1042150. Up to 32554 conditions per place. [2022-12-13 16:29:38,577 INFO L137 encePairwiseOnDemand]: 301/304 looper letters, 14257 selfloop transitions, 28 changer transitions 0/14286 dead transitions. [2022-12-13 16:29:38,577 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 14286 transitions, 379068 flow [2022-12-13 16:29:38,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-13 16:29:38,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-12-13 16:29:38,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4128 transitions. [2022-12-13 16:29:38,581 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5222672064777328 [2022-12-13 16:29:38,581 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4128 transitions. [2022-12-13 16:29:38,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4128 transitions. [2022-12-13 16:29:38,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:29:38,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4128 transitions. [2022-12-13 16:29:38,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 158.76923076923077) internal successors, (4128), 26 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:29:38,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 304.0) internal successors, (8208), 27 states have internal predecessors, (8208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:29:38,591 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 304.0) internal successors, (8208), 27 states have internal predecessors, (8208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:29:38,591 INFO L175 Difference]: Start difference. First operand has 203 places, 3131 transitions, 89703 flow. Second operand 26 states and 4128 transitions. [2022-12-13 16:29:38,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 14286 transitions, 379068 flow [2022-12-13 16:30:36,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 14286 transitions, 378310 flow, removed 359 selfloop flow, removed 12 redundant places. [2022-12-13 16:30:36,462 INFO L231 Difference]: Finished difference. Result has 229 places, 3144 transitions, 89787 flow [2022-12-13 16:30:36,463 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=89573, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=89787, PETRI_PLACES=229, PETRI_TRANSITIONS=3144} [2022-12-13 16:30:36,464 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 199 predicate places. [2022-12-13 16:30:36,464 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 3144 transitions, 89787 flow [2022-12-13 16:30:36,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 144.40740740740742) internal successors, (3899), 27 states have internal predecessors, (3899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:30:36,464 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:30:36,464 INFO L209 CegarLoopForPetriNet]: trace histogram [25, 24, 22, 22, 3, 3, 3, 3, 1, 1, 1, 1] [2022-12-13 16:30:36,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-12-13 16:30:36,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:30:36,665 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-12-13 16:30:36,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:30:36,666 INFO L85 PathProgramCache]: Analyzing trace with hash -443841783, now seen corresponding path program 5 times [2022-12-13 16:30:36,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:30:36,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962624840] [2022-12-13 16:30:36,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:30:36,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:30:36,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:30:37,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 0 proven. 1140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:30:37,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:30:37,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962624840] [2022-12-13 16:30:37,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962624840] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:30:37,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843879720] [2022-12-13 16:30:37,162 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 16:30:37,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:30:37,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:30:37,163 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:30:37,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 16:30:37,654 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2022-12-13 16:30:37,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:30:37,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 885 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-13 16:30:37,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:30:37,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 0 proven. 1140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:30:37,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:30:38,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 0 proven. 1140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:30:38,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843879720] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:30:38,213 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:30:38,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 52 [2022-12-13 16:30:38,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864387396] [2022-12-13 16:30:38,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:30:38,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-12-13 16:30:38,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:30:38,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-12-13 16:30:38,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2022-12-13 16:30:38,308 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 304 [2022-12-13 16:30:38,311 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 3144 transitions, 89787 flow. Second operand has 53 states, 53 states have (on average 144.20754716981133) internal successors, (7643), 53 states have internal predecessors, (7643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:30:38,311 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:30:38,311 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 304 [2022-12-13 16:30:38,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:34:30,796 INFO L130 PetriNetUnfolder]: 138155/261082 cut-off events. [2022-12-13 16:34:30,796 INFO L131 PetriNetUnfolder]: For 8650160/8650160 co-relation queries the response was YES. [2022-12-13 16:34:33,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2205362 conditions, 261082 events. 138155/261082 cut-off events. For 8650160/8650160 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 2252463 event pairs, 14382 based on Foata normal form. 9880/270962 useless extension candidates. Maximal degree in co-relation 2205270. Up to 68278 conditions per place. [2022-12-13 16:34:35,087 INFO L137 encePairwiseOnDemand]: 301/304 looper letters, 29779 selfloop transitions, 54 changer transitions 0/29834 dead transitions. [2022-12-13 16:34:35,087 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 29834 transitions, 790286 flow [2022-12-13 16:34:35,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-12-13 16:34:35,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-12-13 16:34:35,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 8275 transitions. [2022-12-13 16:34:35,098 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5234691295546559 [2022-12-13 16:34:35,098 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 8275 transitions. [2022-12-13 16:34:35,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 8275 transitions. [2022-12-13 16:34:35,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:34:35,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 8275 transitions. [2022-12-13 16:34:35,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 159.1346153846154) internal successors, (8275), 52 states have internal predecessors, (8275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:34:35,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 304.0) internal successors, (16112), 53 states have internal predecessors, (16112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:34:35,128 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 304.0) internal successors, (16112), 53 states have internal predecessors, (16112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:34:35,128 INFO L175 Difference]: Start difference. First operand has 229 places, 3144 transitions, 89787 flow. Second operand 52 states and 8275 transitions. [2022-12-13 16:34:35,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 29834 transitions, 790286 flow [2022-12-13 16:39:44,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 29834 transitions, 790124 flow, removed 66 selfloop flow, removed 12 redundant places. [2022-12-13 16:39:45,051 INFO L231 Difference]: Finished difference. Result has 294 places, 3170 transitions, 90099 flow [2022-12-13 16:39:45,052 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=89677, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=90099, PETRI_PLACES=294, PETRI_TRANSITIONS=3170} [2022-12-13 16:39:45,052 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 264 predicate places. [2022-12-13 16:39:45,052 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 3170 transitions, 90099 flow [2022-12-13 16:39:45,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 144.20754716981133) internal successors, (7643), 53 states have internal predecessors, (7643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:39:45,053 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:39:45,053 INFO L209 CegarLoopForPetriNet]: trace histogram [51, 50, 48, 48, 3, 3, 3, 3, 1, 1, 1, 1] [2022-12-13 16:39:45,059 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-13 16:39:45,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-12-13 16:39:45,255 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-12-13 16:39:45,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:39:45,256 INFO L85 PathProgramCache]: Analyzing trace with hash -363465437, now seen corresponding path program 6 times [2022-12-13 16:39:45,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:39:45,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047066752] [2022-12-13 16:39:45,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:39:45,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:39:45,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:39:46,919 INFO L134 CoverageAnalysis]: Checked inductivity of 4962 backedges. 0 proven. 4962 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:39:46,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:39:46,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047066752] [2022-12-13 16:39:46,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047066752] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:39:46,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49896401] [2022-12-13 16:39:46,920 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 16:39:46,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:39:46,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:39:46,921 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:39:46,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ce6e7f9-562a-4751-9e35-60f266605add/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 16:39:47,291 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2022-12-13 16:39:47,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:39:47,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 80 conjunts are in the unsatisfiable core [2022-12-13 16:39:47,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:39:47,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-12-13 16:39:47,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:39:47,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 16:39:47,443 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-12-13 16:39:47,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-12-13 16:39:47,700 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-12-13 16:39:48,358 INFO L134 CoverageAnalysis]: Checked inductivity of 4962 backedges. 520 proven. 384 refuted. 0 times theorem prover too weak. 4058 trivial. 0 not checked. [2022-12-13 16:39:48,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:39:49,073 INFO L134 CoverageAnalysis]: Checked inductivity of 4962 backedges. 475 proven. 429 refuted. 0 times theorem prover too weak. 4058 trivial. 0 not checked. [2022-12-13 16:39:49,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49896401] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:39:49,073 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:39:49,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 12, 12] total 75 [2022-12-13 16:39:49,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525638438] [2022-12-13 16:39:49,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:39:49,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-12-13 16:39:49,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:39:49,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-12-13 16:39:49,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1582, Invalid=3968, Unknown=0, NotChecked=0, Total=5550 [2022-12-13 16:39:50,701 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 304 [2022-12-13 16:39:50,705 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 3170 transitions, 90099 flow. Second operand has 75 states, 75 states have (on average 131.6) internal successors, (9870), 75 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:39:50,705 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:39:50,705 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 304 [2022-12-13 16:39:50,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand