./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-deagle/reorder_c11_good-10.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a 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_27d0b485-4956-42ff-9ce2-06420dfd5549/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d0b485-4956-42ff-9ce2-06420dfd5549/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d0b485-4956-42ff-9ce2-06420dfd5549/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d0b485-4956-42ff-9ce2-06420dfd5549/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-deagle/reorder_c11_good-10.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d0b485-4956-42ff-9ce2-06420dfd5549/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d0b485-4956-42ff-9ce2-06420dfd5549/bin/utaipan-ByfvJB40ur --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 053c2020ab3922d27be669eca0e75ac8051424727a4d2b2d1ab69540cc43f0a3 --- 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-38b53e6 [2022-11-25 23:34:39,741 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:34:39,743 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:34:39,771 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:34:39,772 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:34:39,775 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:34:39,780 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:34:39,784 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:34:39,786 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:34:39,791 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:34:39,794 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:34:39,796 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:34:39,796 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:34:39,799 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:34:39,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:34:39,804 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:34:39,806 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:34:39,807 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:34:39,808 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:34:39,815 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:34:39,817 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:34:39,819 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:34:39,820 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:34:39,821 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:34:39,831 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:34:39,831 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:34:39,832 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:34:39,834 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:34:39,834 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:34:39,835 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:34:39,836 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:34:39,837 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:34:39,838 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:34:39,839 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:34:39,840 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:34:39,841 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:34:39,841 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:34:39,842 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:34:39,842 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:34:39,843 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:34:39,843 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:34:39,844 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d0b485-4956-42ff-9ce2-06420dfd5549/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-25 23:34:39,890 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:34:39,890 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:34:39,891 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:34:39,891 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:34:39,892 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:34:39,892 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:34:39,892 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:34:39,893 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:34:39,893 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:34:39,893 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:34:39,894 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:34:39,894 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:34:39,895 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:34:39,895 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:34:39,895 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:34:39,895 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:34:39,895 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:34:39,896 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:34:39,897 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:34:39,897 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 23:34:39,897 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 23:34:39,897 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:34:39,898 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 23:34:39,898 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:34:39,898 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:34:39,898 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:34:39,899 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:34:39,899 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 23:34:39,899 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 23:34:39,899 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:34:39,900 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:34:39,900 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:34:39,900 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:34:39,900 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:34:39,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:34:39,901 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:34:39,901 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:34:39,901 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:34:39,901 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:34:39,902 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:34:39,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:34:39,902 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:34:39,902 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:34:39,902 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d0b485-4956-42ff-9ce2-06420dfd5549/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d0b485-4956-42ff-9ce2-06420dfd5549/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 053c2020ab3922d27be669eca0e75ac8051424727a4d2b2d1ab69540cc43f0a3 [2022-11-25 23:34:40,185 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:34:40,207 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:34:40,209 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:34:40,211 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:34:40,211 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:34:40,213 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d0b485-4956-42ff-9ce2-06420dfd5549/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/pthread-deagle/reorder_c11_good-10.i [2022-11-25 23:34:43,280 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:34:43,542 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:34:43,543 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d0b485-4956-42ff-9ce2-06420dfd5549/sv-benchmarks/c/pthread-deagle/reorder_c11_good-10.i [2022-11-25 23:34:43,556 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d0b485-4956-42ff-9ce2-06420dfd5549/bin/utaipan-ByfvJB40ur/data/c9346a728/6f252e1715bf4e83864e1abed853f172/FLAG946cc046e [2022-11-25 23:34:43,571 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d0b485-4956-42ff-9ce2-06420dfd5549/bin/utaipan-ByfvJB40ur/data/c9346a728/6f252e1715bf4e83864e1abed853f172 [2022-11-25 23:34:43,574 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:34:43,576 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:34:43,577 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:34:43,577 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:34:43,581 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:34:43,585 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:34:43" (1/1) ... [2022-11-25 23:34:43,586 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10ac3f97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:34:43, skipping insertion in model container [2022-11-25 23:34:43,586 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:34:43" (1/1) ... [2022-11-25 23:34:43,594 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:34:43,653 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:34:44,014 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:34:44,015 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:34:44,015 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:34:44,016 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:34:44,022 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_27d0b485-4956-42ff-9ce2-06420dfd5549/sv-benchmarks/c/pthread-deagle/reorder_c11_good-10.i[30195,30208] [2022-11-25 23:34:44,047 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:34:44,057 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:34:44,089 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:34:44,089 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:34:44,090 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 23:34:44,090 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 23:34:44,091 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_27d0b485-4956-42ff-9ce2-06420dfd5549/sv-benchmarks/c/pthread-deagle/reorder_c11_good-10.i[30195,30208] [2022-11-25 23:34:44,098 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:34:44,129 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:34:44,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:34:44 WrapperNode [2022-11-25 23:34:44,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:34:44,131 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:34:44,132 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:34:44,132 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:34:44,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:34:44" (1/1) ... [2022-11-25 23:34:44,152 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:34:44" (1/1) ... [2022-11-25 23:34:44,172 INFO L138 Inliner]: procedures = 163, calls = 21, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 79 [2022-11-25 23:34:44,173 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:34:44,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:34:44,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:34:44,174 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:34:44,183 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:34:44" (1/1) ... [2022-11-25 23:34:44,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:34:44" (1/1) ... [2022-11-25 23:34:44,186 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:34:44" (1/1) ... [2022-11-25 23:34:44,186 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:34:44" (1/1) ... [2022-11-25 23:34:44,191 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:34:44" (1/1) ... [2022-11-25 23:34:44,196 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:34:44" (1/1) ... [2022-11-25 23:34:44,197 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:34:44" (1/1) ... [2022-11-25 23:34:44,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:34:44" (1/1) ... [2022-11-25 23:34:44,201 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:34:44,202 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:34:44,202 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:34:44,202 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:34:44,203 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:34:44" (1/1) ... [2022-11-25 23:34:44,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:34:44,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d0b485-4956-42ff-9ce2-06420dfd5549/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:34:44,245 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d0b485-4956-42ff-9ce2-06420dfd5549/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:34:44,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d0b485-4956-42ff-9ce2-06420dfd5549/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:34:44,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 23:34:44,316 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2022-11-25 23:34:44,316 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2022-11-25 23:34:44,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 23:34:44,317 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 23:34:44,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:34:44,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 23:34:44,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 23:34:44,317 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2022-11-25 23:34:44,318 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2022-11-25 23:34:44,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:34:44,318 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 23:34:44,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:34:44,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:34:44,321 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 23:34:44,478 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:34:44,481 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:34:44,694 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:34:44,701 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:34:44,702 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-25 23:34:44,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:34:44 BoogieIcfgContainer [2022-11-25 23:34:44,705 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:34:44,708 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:34:44,708 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:34:44,712 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:34:44,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:34:43" (1/3) ... [2022-11-25 23:34:44,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@785481ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:34:44, skipping insertion in model container [2022-11-25 23:34:44,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:34:44" (2/3) ... [2022-11-25 23:34:44,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@785481ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:34:44, skipping insertion in model container [2022-11-25 23:34:44,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:34:44" (3/3) ... [2022-11-25 23:34:44,716 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_c11_good-10.i [2022-11-25 23:34:44,737 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 23:34:44,761 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:34:44,761 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-25 23:34:44,761 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 23:34:44,889 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-25 23:34:44,944 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 23:34:44,966 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 106 transitions, 234 flow [2022-11-25 23:34:44,971 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 102 places, 106 transitions, 234 flow [2022-11-25 23:34:44,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 106 transitions, 234 flow [2022-11-25 23:34:45,134 INFO L130 PetriNetUnfolder]: 24/236 cut-off events. [2022-11-25 23:34:45,139 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-25 23:34:45,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 236 events. 24/236 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 745 event pairs, 0 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 116. Up to 8 conditions per place. [2022-11-25 23:34:45,155 INFO L119 LiptonReduction]: Number of co-enabled transitions 1474 [2022-11-25 23:34:48,145 INFO L134 LiptonReduction]: Checked pairs total: 2068 [2022-11-25 23:34:48,146 INFO L136 LiptonReduction]: Total number of compositions: 91 [2022-11-25 23:34:48,154 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 33 transitions, 88 flow [2022-11-25 23:34:48,176 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 141 states, 115 states have (on average 2.017391304347826) internal successors, (232), 140 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:34:48,195 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:34:48,202 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=FINITE_AUTOMATA, 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;@61de65, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:34:48,202 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-25 23:34:48,205 INFO L276 IsEmpty]: Start isEmpty. Operand has 141 states, 115 states have (on average 2.017391304347826) internal successors, (232), 140 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:34:48,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-25 23:34:48,210 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:34:48,211 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-25 23:34:48,211 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-25 23:34:48,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:34:48,216 INFO L85 PathProgramCache]: Analyzing trace with hash 11869038, now seen corresponding path program 1 times [2022-11-25 23:34:48,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:34:48,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83424595] [2022-11-25 23:34:48,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:34:48,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:34:48,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:34:48,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:34:48,524 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:34:48,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83424595] [2022-11-25 23:34:48,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83424595] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:34:48,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:34:48,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 23:34:48,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281052649] [2022-11-25 23:34:48,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:34:48,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:34:48,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:34:48,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:34:48,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:34:48,570 INFO L87 Difference]: Start difference. First operand has 141 states, 115 states have (on average 2.017391304347826) internal successors, (232), 140 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:34:48,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:34:48,666 INFO L93 Difference]: Finished difference Result 75 states and 115 transitions. [2022-11-25 23:34:48,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:34:48,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-25 23:34:48,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:34:48,679 INFO L225 Difference]: With dead ends: 75 [2022-11-25 23:34:48,679 INFO L226 Difference]: Without dead ends: 59 [2022-11-25 23:34:48,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:34:48,685 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 12 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:34:48,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 7 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:34:48,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-25 23:34:48,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-11-25 23:34:48,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 55 states have (on average 1.709090909090909) internal successors, (94), 58 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:34:48,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 94 transitions. [2022-11-25 23:34:48,731 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 94 transitions. Word has length 4 [2022-11-25 23:34:48,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:34:48,732 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 94 transitions. [2022-11-25 23:34:48,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:34:48,732 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 94 transitions. [2022-11-25 23:34:48,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-25 23:34:48,733 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:34:48,733 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-25 23:34:48,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:34:48,733 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-25 23:34:48,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:34:48,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1478744456, now seen corresponding path program 1 times [2022-11-25 23:34:48,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:34:48,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965021508] [2022-11-25 23:34:48,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:34:48,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:34:48,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:34:48,759 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 23:34:48,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:34:48,792 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-25 23:34:48,793 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 23:34:48,795 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-11-25 23:34:48,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-11-25 23:34:48,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-11-25 23:34:48,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-11-25 23:34:48,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-11-25 23:34:48,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-11-25 23:34:48,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-11-25 23:34:48,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-11-25 23:34:48,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-11-25 23:34:48,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-11-25 23:34:48,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 23:34:48,802 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-25 23:34:48,804 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 23:34:48,804 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-25 23:34:48,827 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-11-25 23:34:48,829 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 23:34:48,830 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 119 places, 124 transitions, 296 flow [2022-11-25 23:34:48,830 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 119 places, 124 transitions, 296 flow [2022-11-25 23:34:48,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 124 transitions, 296 flow [2022-11-25 23:34:48,983 INFO L130 PetriNetUnfolder]: 107/802 cut-off events. [2022-11-25 23:34:48,983 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-11-25 23:34:48,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 899 conditions, 802 events. 107/802 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 4066 event pairs, 2 based on Foata normal form. 0/632 useless extension candidates. Maximal degree in co-relation 467. Up to 32 conditions per place. [2022-11-25 23:34:49,002 INFO L119 LiptonReduction]: Number of co-enabled transitions 3472 [2022-11-25 23:34:51,731 INFO L134 LiptonReduction]: Checked pairs total: 5231 [2022-11-25 23:34:51,731 INFO L136 LiptonReduction]: Total number of compositions: 102 [2022-11-25 23:34:51,733 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 44 places, 43 transitions, 134 flow [2022-11-25 23:34:51,797 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1261 states, 1164 states have (on average 2.620274914089347) internal successors, (3050), 1260 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:34:51,799 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:34:51,800 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=FINITE_AUTOMATA, 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;@61de65, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:34:51,800 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-25 23:34:51,804 INFO L276 IsEmpty]: Start isEmpty. Operand has 1261 states, 1164 states have (on average 2.620274914089347) internal successors, (3050), 1260 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:34:51,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-25 23:34:51,805 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:34:51,805 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 23:34:51,805 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-25 23:34:51,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:34:51,806 INFO L85 PathProgramCache]: Analyzing trace with hash 598920540, now seen corresponding path program 1 times [2022-11-25 23:34:51,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:34:51,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627786121] [2022-11-25 23:34:51,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:34:51,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:34:51,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:34:51,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:34:51,907 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:34:51,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627786121] [2022-11-25 23:34:51,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627786121] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:34:51,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:34:51,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 23:34:51,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396156615] [2022-11-25 23:34:51,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:34:51,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:34:51,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:34:51,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:34:51,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:34:51,917 INFO L87 Difference]: Start difference. First operand has 1261 states, 1164 states have (on average 2.620274914089347) internal successors, (3050), 1260 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:34:52,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:34:52,041 INFO L93 Difference]: Finished difference Result 1043 states and 2409 transitions. [2022-11-25 23:34:52,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:34:52,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-25 23:34:52,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:34:52,053 INFO L225 Difference]: With dead ends: 1043 [2022-11-25 23:34:52,053 INFO L226 Difference]: Without dead ends: 987 [2022-11-25 23:34:52,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:34:52,063 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 19 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:34:52,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 12 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:34:52,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2022-11-25 23:34:52,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 987. [2022-11-25 23:34:52,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 987 states, 946 states have (on average 2.4450317124735728) internal successors, (2313), 986 states have internal predecessors, (2313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:34:52,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 987 states to 987 states and 2313 transitions. [2022-11-25 23:34:52,182 INFO L78 Accepts]: Start accepts. Automaton has 987 states and 2313 transitions. Word has length 5 [2022-11-25 23:34:52,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:34:52,182 INFO L495 AbstractCegarLoop]: Abstraction has 987 states and 2313 transitions. [2022-11-25 23:34:52,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:34:52,183 INFO L276 IsEmpty]: Start isEmpty. Operand 987 states and 2313 transitions. [2022-11-25 23:34:52,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-25 23:34:52,183 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:34:52,183 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-25 23:34:52,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 23:34:52,186 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-25 23:34:52,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:34:52,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1244969870, now seen corresponding path program 1 times [2022-11-25 23:34:52,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:34:52,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186386080] [2022-11-25 23:34:52,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:34:52,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:34:52,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:34:52,264 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:34:52,264 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:34:52,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186386080] [2022-11-25 23:34:52,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186386080] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:34:52,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:34:52,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 23:34:52,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929805249] [2022-11-25 23:34:52,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:34:52,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:34:52,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:34:52,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:34:52,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:34:52,267 INFO L87 Difference]: Start difference. First operand 987 states and 2313 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:34:52,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:34:52,337 INFO L93 Difference]: Finished difference Result 917 states and 2163 transitions. [2022-11-25 23:34:52,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:34:52,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-25 23:34:52,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:34:52,345 INFO L225 Difference]: With dead ends: 917 [2022-11-25 23:34:52,345 INFO L226 Difference]: Without dead ends: 917 [2022-11-25 23:34:52,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:34:52,357 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 27 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:34:52,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 6 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:34:52,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2022-11-25 23:34:52,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 917. [2022-11-25 23:34:52,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 917 states, 895 states have (on average 2.416759776536313) internal successors, (2163), 916 states have internal predecessors, (2163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:34:52,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 2163 transitions. [2022-11-25 23:34:52,398 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 2163 transitions. Word has length 9 [2022-11-25 23:34:52,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:34:52,402 INFO L495 AbstractCegarLoop]: Abstraction has 917 states and 2163 transitions. [2022-11-25 23:34:52,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:34:52,404 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 2163 transitions. [2022-11-25 23:34:52,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-25 23:34:52,405 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:34:52,405 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-25 23:34:52,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 23:34:52,406 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-25 23:34:52,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:34:52,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1244969871, now seen corresponding path program 1 times [2022-11-25 23:34:52,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:34:52,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851810269] [2022-11-25 23:34:52,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:34:52,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:34:52,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:34:52,514 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 23:34:52,515 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:34:52,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851810269] [2022-11-25 23:34:52,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851810269] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:34:52,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:34:52,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 23:34:52,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342983761] [2022-11-25 23:34:52,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:34:52,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:34:52,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:34:52,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:34:52,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:34:52,517 INFO L87 Difference]: Start difference. First operand 917 states and 2163 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:34:52,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:34:52,583 INFO L93 Difference]: Finished difference Result 847 states and 2013 transitions. [2022-11-25 23:34:52,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:34:52,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-25 23:34:52,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:34:52,585 INFO L225 Difference]: With dead ends: 847 [2022-11-25 23:34:52,585 INFO L226 Difference]: Without dead ends: 211 [2022-11-25 23:34:52,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:34:52,588 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:34:52,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 6 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:34:52,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-11-25 23:34:52,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2022-11-25 23:34:52,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 208 states have (on average 2.4375) internal successors, (507), 210 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:34:52,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 507 transitions. [2022-11-25 23:34:52,622 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 507 transitions. Word has length 9 [2022-11-25 23:34:52,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:34:52,622 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 507 transitions. [2022-11-25 23:34:52,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:34:52,623 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 507 transitions. [2022-11-25 23:34:52,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 23:34:52,623 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:34:52,624 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-25 23:34:52,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 23:34:52,624 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-25 23:34:52,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:34:52,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1879802162, now seen corresponding path program 1 times [2022-11-25 23:34:52,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:34:52,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932575754] [2022-11-25 23:34:52,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:34:52,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:34:52,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:34:52,643 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 23:34:52,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:34:52,657 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-25 23:34:52,657 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 23:34:52,657 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-11-25 23:34:52,657 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-11-25 23:34:52,658 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-11-25 23:34:52,658 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-11-25 23:34:52,658 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-11-25 23:34:52,658 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-11-25 23:34:52,659 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-11-25 23:34:52,659 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-11-25 23:34:52,659 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-11-25 23:34:52,659 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-11-25 23:34:52,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 23:34:52,660 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-25 23:34:52,660 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 23:34:52,661 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-25 23:34:52,684 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2022-11-25 23:34:52,687 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 23:34:52,687 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 136 places, 142 transitions, 362 flow [2022-11-25 23:34:52,688 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 136 places, 142 transitions, 362 flow [2022-11-25 23:34:52,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 142 transitions, 362 flow [2022-11-25 23:34:53,121 INFO L130 PetriNetUnfolder]: 496/2832 cut-off events. [2022-11-25 23:34:53,121 INFO L131 PetriNetUnfolder]: For 419/419 co-relation queries the response was YES. [2022-11-25 23:34:53,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3283 conditions, 2832 events. 496/2832 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 19891 event pairs, 64 based on Foata normal form. 0/2242 useless extension candidates. Maximal degree in co-relation 1682. Up to 192 conditions per place. [2022-11-25 23:34:53,182 INFO L119 LiptonReduction]: Number of co-enabled transitions 5994 [2022-11-25 23:34:56,081 INFO L134 LiptonReduction]: Checked pairs total: 9431 [2022-11-25 23:34:56,081 INFO L136 LiptonReduction]: Total number of compositions: 115 [2022-11-25 23:34:56,082 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 52 places, 51 transitions, 180 flow [2022-11-25 23:34:56,496 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 10469 states, 10117 states have (on average 3.3219333794603143) internal successors, (33608), 10468 states have internal predecessors, (33608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:34:56,497 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:34:56,498 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=FINITE_AUTOMATA, 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;@61de65, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:34:56,498 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-25 23:34:56,528 INFO L276 IsEmpty]: Start isEmpty. Operand has 10469 states, 10117 states have (on average 3.3219333794603143) internal successors, (33608), 10468 states have internal predecessors, (33608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:34:56,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-25 23:34:56,529 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:34:56,529 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 23:34:56,529 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-25 23:34:56,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:34:56,530 INFO L85 PathProgramCache]: Analyzing trace with hash 859366996, now seen corresponding path program 1 times [2022-11-25 23:34:56,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:34:56,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120995544] [2022-11-25 23:34:56,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:34:56,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:34:56,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:34:56,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:34:56,573 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:34:56,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120995544] [2022-11-25 23:34:56,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120995544] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:34:56,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:34:56,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 23:34:56,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535614603] [2022-11-25 23:34:56,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:34:56,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:34:56,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:34:56,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:34:56,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:34:56,605 INFO L87 Difference]: Start difference. First operand has 10469 states, 10117 states have (on average 3.3219333794603143) internal successors, (33608), 10468 states have internal predecessors, (33608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:34:57,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:34:57,010 INFO L93 Difference]: Finished difference Result 10471 states and 32365 transitions. [2022-11-25 23:34:57,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:34:57,011 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-25 23:34:57,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:34:57,110 INFO L225 Difference]: With dead ends: 10471 [2022-11-25 23:34:57,110 INFO L226 Difference]: Without dead ends: 9967 [2022-11-25 23:34:57,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:34:57,111 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 25 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:34:57,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 12 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:34:57,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9967 states. [2022-11-25 23:34:57,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9967 to 9967. [2022-11-25 23:34:57,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9967 states, 9749 states have (on average 3.185660067699251) internal successors, (31057), 9966 states have internal predecessors, (31057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:34:57,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9967 states to 9967 states and 31057 transitions. [2022-11-25 23:34:57,644 INFO L78 Accepts]: Start accepts. Automaton has 9967 states and 31057 transitions. Word has length 5 [2022-11-25 23:34:57,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:34:57,645 INFO L495 AbstractCegarLoop]: Abstraction has 9967 states and 31057 transitions. [2022-11-25 23:34:57,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:34:57,645 INFO L276 IsEmpty]: Start isEmpty. Operand 9967 states and 31057 transitions. [2022-11-25 23:34:57,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-25 23:34:57,646 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:34:57,646 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-25 23:34:57,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 23:34:57,647 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-25 23:34:57,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:34:57,647 INFO L85 PathProgramCache]: Analyzing trace with hash -2020379530, now seen corresponding path program 1 times [2022-11-25 23:34:57,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:34:57,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042629048] [2022-11-25 23:34:57,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:34:57,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:34:57,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:34:57,727 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:34:57,727 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:34:57,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042629048] [2022-11-25 23:34:57,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042629048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:34:57,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:34:57,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 23:34:57,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420588383] [2022-11-25 23:34:57,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:34:57,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:34:57,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:34:57,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:34:57,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:34:57,730 INFO L87 Difference]: Start difference. First operand 9967 states and 31057 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:34:57,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:34:57,993 INFO L93 Difference]: Finished difference Result 9081 states and 28635 transitions. [2022-11-25 23:34:57,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:34:57,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-25 23:34:57,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:34:58,069 INFO L225 Difference]: With dead ends: 9081 [2022-11-25 23:34:58,070 INFO L226 Difference]: Without dead ends: 9081 [2022-11-25 23:34:58,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:34:58,071 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 35 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:34:58,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 6 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:34:58,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9081 states. [2022-11-25 23:34:58,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9081 to 9081. [2022-11-25 23:34:58,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9081 states, 8970 states have (on average 3.1923076923076925) internal successors, (28635), 9080 states have internal predecessors, (28635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:34:58,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9081 states to 9081 states and 28635 transitions. [2022-11-25 23:34:58,626 INFO L78 Accepts]: Start accepts. Automaton has 9081 states and 28635 transitions. Word has length 9 [2022-11-25 23:34:58,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:34:58,626 INFO L495 AbstractCegarLoop]: Abstraction has 9081 states and 28635 transitions. [2022-11-25 23:34:58,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:34:58,626 INFO L276 IsEmpty]: Start isEmpty. Operand 9081 states and 28635 transitions. [2022-11-25 23:34:58,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-25 23:34:58,628 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:34:58,628 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-25 23:34:58,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 23:34:58,628 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-25 23:34:58,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:34:58,629 INFO L85 PathProgramCache]: Analyzing trace with hash -2020379528, now seen corresponding path program 1 times [2022-11-25 23:34:58,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:34:58,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237282864] [2022-11-25 23:34:58,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:34:58,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:34:58,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:34:58,706 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 23:34:58,707 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:34:58,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237282864] [2022-11-25 23:34:58,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237282864] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:34:58,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:34:58,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 23:34:58,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017864171] [2022-11-25 23:34:58,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:34:58,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:34:58,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:34:58,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:34:58,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:34:58,709 INFO L87 Difference]: Start difference. First operand 9081 states and 28635 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:34:59,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:34:59,037 INFO L93 Difference]: Finished difference Result 8195 states and 26213 transitions. [2022-11-25 23:34:59,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:34:59,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-25 23:34:59,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:34:59,063 INFO L225 Difference]: With dead ends: 8195 [2022-11-25 23:34:59,063 INFO L226 Difference]: Without dead ends: 991 [2022-11-25 23:34:59,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:34:59,065 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 31 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:34:59,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 6 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:34:59,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2022-11-25 23:34:59,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 991. [2022-11-25 23:34:59,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 987 states have (on average 3.2492401215805473) internal successors, (3207), 990 states have internal predecessors, (3207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:34:59,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 3207 transitions. [2022-11-25 23:34:59,147 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 3207 transitions. Word has length 9 [2022-11-25 23:34:59,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:34:59,147 INFO L495 AbstractCegarLoop]: Abstraction has 991 states and 3207 transitions. [2022-11-25 23:34:59,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:34:59,147 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 3207 transitions. [2022-11-25 23:34:59,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-25 23:34:59,161 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:34:59,161 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-11-25 23:34:59,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 23:34:59,162 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-25 23:34:59,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:34:59,162 INFO L85 PathProgramCache]: Analyzing trace with hash -723327631, now seen corresponding path program 1 times [2022-11-25 23:34:59,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:34:59,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179781496] [2022-11-25 23:34:59,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:34:59,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:34:59,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:34:59,203 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 23:34:59,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:34:59,229 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-25 23:34:59,230 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 23:34:59,230 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-11-25 23:34:59,230 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-11-25 23:34:59,230 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-11-25 23:34:59,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-11-25 23:34:59,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-11-25 23:34:59,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-11-25 23:34:59,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-11-25 23:34:59,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-11-25 23:34:59,232 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-11-25 23:34:59,232 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-11-25 23:34:59,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 23:34:59,232 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-25 23:34:59,233 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 23:34:59,233 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-25 23:34:59,285 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2022-11-25 23:34:59,293 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 23:34:59,293 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 153 places, 160 transitions, 432 flow [2022-11-25 23:34:59,293 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 153 places, 160 transitions, 432 flow [2022-11-25 23:34:59,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 160 transitions, 432 flow [2022-11-25 23:35:01,615 INFO L130 PetriNetUnfolder]: 2379/10862 cut-off events. [2022-11-25 23:35:01,616 INFO L131 PetriNetUnfolder]: For 2144/2144 co-relation queries the response was YES. [2022-11-25 23:35:01,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13027 conditions, 10862 events. 2379/10862 cut-off events. For 2144/2144 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 100503 event pairs, 626 based on Foata normal form. 0/8690 useless extension candidates. Maximal degree in co-relation 6464. Up to 1024 conditions per place. [2022-11-25 23:35:01,911 INFO L119 LiptonReduction]: Number of co-enabled transitions 9040 [2022-11-25 23:35:05,312 INFO L134 LiptonReduction]: Checked pairs total: 15709 [2022-11-25 23:35:05,312 INFO L136 LiptonReduction]: Total number of compositions: 128 [2022-11-25 23:35:05,313 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 60 places, 59 transitions, 230 flow [2022-11-25 23:35:09,092 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 89581 states, 88250 states have (on average 4.055320113314448) internal successors, (357882), 89580 states have internal predecessors, (357882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:35:09,109 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:35:09,109 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=FINITE_AUTOMATA, 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;@61de65, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:35:09,110 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-25 23:35:09,293 INFO L276 IsEmpty]: Start isEmpty. Operand has 89581 states, 88250 states have (on average 4.055320113314448) internal successors, (357882), 89580 states have internal predecessors, (357882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:35:09,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-25 23:35:09,294 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:35:09,294 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 23:35:09,295 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-25 23:35:09,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:35:09,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1149247950, now seen corresponding path program 1 times [2022-11-25 23:35:09,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:35:09,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845362755] [2022-11-25 23:35:09,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:35:09,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:35:09,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:35:09,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:35:09,334 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:35:09,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845362755] [2022-11-25 23:35:09,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845362755] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:35:09,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:35:09,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 23:35:09,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450413657] [2022-11-25 23:35:09,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:35:09,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:35:09,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:35:09,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:35:09,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:35:09,476 INFO L87 Difference]: Start difference. First operand has 89581 states, 88250 states have (on average 4.055320113314448) internal successors, (357882), 89580 states have internal predecessors, (357882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:35:11,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:35:11,055 INFO L93 Difference]: Finished difference Result 100007 states and 390177 transitions. [2022-11-25 23:35:11,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:35:11,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-25 23:35:11,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:35:12,495 INFO L225 Difference]: With dead ends: 100007 [2022-11-25 23:35:12,495 INFO L226 Difference]: Without dead ends: 94687 [2022-11-25 23:35:12,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:35:12,497 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 31 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:35:12,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 12 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:35:12,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94687 states. [2022-11-25 23:35:16,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94687 to 94687. [2022-11-25 23:35:16,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94687 states, 93720 states have (on average 3.9686833119931713) internal successors, (371945), 94686 states have internal predecessors, (371945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:35:17,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94687 states to 94687 states and 371945 transitions. [2022-11-25 23:35:17,619 INFO L78 Accepts]: Start accepts. Automaton has 94687 states and 371945 transitions. Word has length 5 [2022-11-25 23:35:17,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:35:17,619 INFO L495 AbstractCegarLoop]: Abstraction has 94687 states and 371945 transitions. [2022-11-25 23:35:17,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:35:17,620 INFO L276 IsEmpty]: Start isEmpty. Operand 94687 states and 371945 transitions. [2022-11-25 23:35:17,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-25 23:35:17,620 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:35:17,620 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-25 23:35:17,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 23:35:17,621 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-25 23:35:17,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:35:17,621 INFO L85 PathProgramCache]: Analyzing trace with hash -460021692, now seen corresponding path program 1 times [2022-11-25 23:35:17,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:35:17,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902025343] [2022-11-25 23:35:17,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:35:17,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:35:17,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:35:17,670 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 23:35:17,671 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:35:17,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902025343] [2022-11-25 23:35:17,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902025343] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:35:17,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:35:17,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 23:35:17,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587514290] [2022-11-25 23:35:17,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:35:17,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:35:17,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:35:17,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:35:17,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:35:17,673 INFO L87 Difference]: Start difference. First operand 94687 states and 371945 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:35:19,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:35:19,002 INFO L93 Difference]: Finished difference Result 85049 states and 339047 transitions. [2022-11-25 23:35:19,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:35:19,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-25 23:35:19,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:35:19,712 INFO L225 Difference]: With dead ends: 85049 [2022-11-25 23:35:19,712 INFO L226 Difference]: Without dead ends: 85049 [2022-11-25 23:35:19,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:35:19,714 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 43 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:35:19,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 6 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:35:20,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85049 states. [2022-11-25 23:35:22,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85049 to 85049. [2022-11-25 23:35:22,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85049 states, 84563 states have (on average 4.0094012747892105) internal successors, (339047), 85048 states have internal predecessors, (339047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:35:23,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85049 states to 85049 states and 339047 transitions. [2022-11-25 23:35:23,907 INFO L78 Accepts]: Start accepts. Automaton has 85049 states and 339047 transitions. Word has length 9 [2022-11-25 23:35:23,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:35:23,908 INFO L495 AbstractCegarLoop]: Abstraction has 85049 states and 339047 transitions. [2022-11-25 23:35:23,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:35:23,908 INFO L276 IsEmpty]: Start isEmpty. Operand 85049 states and 339047 transitions. [2022-11-25 23:35:23,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-25 23:35:23,908 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:35:23,909 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-25 23:35:23,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 23:35:23,909 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-25 23:35:23,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:35:23,910 INFO L85 PathProgramCache]: Analyzing trace with hash -460021691, now seen corresponding path program 1 times [2022-11-25 23:35:23,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:35:23,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122145079] [2022-11-25 23:35:23,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:35:23,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:35:23,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:35:23,977 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:35:23,977 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:35:23,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122145079] [2022-11-25 23:35:23,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122145079] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:35:23,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:35:23,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 23:35:23,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257260446] [2022-11-25 23:35:23,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:35:23,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:35:23,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:35:23,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:35:23,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:35:23,980 INFO L87 Difference]: Start difference. First operand 85049 states and 339047 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:35:24,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:35:24,633 INFO L93 Difference]: Finished difference Result 75411 states and 306149 transitions. [2022-11-25 23:35:24,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:35:24,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-25 23:35:24,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:35:24,648 INFO L225 Difference]: With dead ends: 75411 [2022-11-25 23:35:24,649 INFO L226 Difference]: Without dead ends: 4279 [2022-11-25 23:35:24,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:35:24,649 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 39 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:35:24,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 6 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:35:24,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4279 states. [2022-11-25 23:35:24,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4279 to 4279. [2022-11-25 23:35:24,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4279 states, 4274 states have (on average 4.127983153954141) internal successors, (17643), 4278 states have internal predecessors, (17643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:35:24,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4279 states to 4279 states and 17643 transitions. [2022-11-25 23:35:24,750 INFO L78 Accepts]: Start accepts. Automaton has 4279 states and 17643 transitions. Word has length 9 [2022-11-25 23:35:24,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:35:24,750 INFO L495 AbstractCegarLoop]: Abstraction has 4279 states and 17643 transitions. [2022-11-25 23:35:24,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:35:24,750 INFO L276 IsEmpty]: Start isEmpty. Operand 4279 states and 17643 transitions. [2022-11-25 23:35:24,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-25 23:35:24,751 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:35:24,752 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2022-11-25 23:35:24,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 23:35:24,752 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-25 23:35:24,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:35:24,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1663429417, now seen corresponding path program 1 times [2022-11-25 23:35:24,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:35:24,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467456370] [2022-11-25 23:35:24,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:35:24,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:35:24,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:35:24,770 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 23:35:24,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:35:24,786 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-25 23:35:24,786 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 23:35:24,786 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-11-25 23:35:24,787 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-11-25 23:35:24,787 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-11-25 23:35:24,787 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-11-25 23:35:24,787 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-11-25 23:35:24,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-11-25 23:35:24,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-11-25 23:35:24,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-11-25 23:35:24,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-11-25 23:35:24,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-11-25 23:35:24,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 23:35:24,789 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-25 23:35:24,790 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 23:35:24,790 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-11-25 23:35:24,822 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2022-11-25 23:35:24,825 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 23:35:24,825 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 170 places, 178 transitions, 506 flow [2022-11-25 23:35:24,826 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 170 places, 178 transitions, 506 flow [2022-11-25 23:35:24,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 178 transitions, 506 flow [2022-11-25 23:35:33,614 INFO L130 PetriNetUnfolder]: 11372/43900 cut-off events. [2022-11-25 23:35:33,614 INFO L131 PetriNetUnfolder]: For 10450/10450 co-relation queries the response was YES. [2022-11-25 23:35:34,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54326 conditions, 43900 events. 11372/43900 cut-off events. For 10450/10450 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 511238 event pairs, 4296 based on Foata normal form. 0/35528 useless extension candidates. Maximal degree in co-relation 26480. Up to 5120 conditions per place. [2022-11-25 23:35:34,931 INFO L119 LiptonReduction]: Number of co-enabled transitions 12610 [2022-11-25 23:35:38,318 INFO L134 LiptonReduction]: Checked pairs total: 23922 [2022-11-25 23:35:38,318 INFO L136 LiptonReduction]: Total number of compositions: 141 [2022-11-25 23:35:38,319 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 68 places, 67 transitions, 284 flow