./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-ext/12_fmaxsymopt_cas.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6377188c-cde1-438a-bdb6-c7e2eeb8b9d7/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6377188c-cde1-438a-bdb6-c7e2eeb8b9d7/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6377188c-cde1-438a-bdb6-c7e2eeb8b9d7/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6377188c-cde1-438a-bdb6-c7e2eeb8b9d7/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/12_fmaxsymopt_cas.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6377188c-cde1-438a-bdb6-c7e2eeb8b9d7/bin/uautomizer-Dbtcem3rbc/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6377188c-cde1-438a-bdb6-c7e2eeb8b9d7/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7a0803bc25bdee4cec741e6286f7294c3704d91bb65e5684830693d517eafafb --- 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-5e519f3 [2022-11-02 20:55:40,010 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:55:40,013 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:55:40,067 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:55:40,068 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:55:40,071 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:55:40,074 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:55:40,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:55:40,080 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:55:40,085 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:55:40,086 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:55:40,089 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:55:40,089 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:55:40,091 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:55:40,093 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:55:40,095 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:55:40,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:55:40,097 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:55:40,099 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:55:40,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:55:40,110 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:55:40,111 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:55:40,114 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:55:40,115 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:55:40,124 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:55:40,124 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:55:40,124 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:55:40,126 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:55:40,127 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:55:40,128 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:55:40,128 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:55:40,129 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:55:40,131 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:55:40,132 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:55:40,134 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:55:40,135 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:55:40,135 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:55:40,136 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:55:40,136 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:55:40,137 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:55:40,137 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:55:40,138 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6377188c-cde1-438a-bdb6-c7e2eeb8b9d7/bin/uautomizer-Dbtcem3rbc/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-02 20:55:40,179 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:55:40,179 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:55:40,180 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:55:40,180 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:55:40,181 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:55:40,181 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:55:40,182 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:55:40,182 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:55:40,183 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:55:40,183 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:55:40,184 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:55:40,184 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:55:40,184 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:55:40,185 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:55:40,185 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:55:40,185 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:55:40,185 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:55:40,185 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:55:40,185 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-02 20:55:40,186 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:55:40,186 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:55:40,186 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:55:40,186 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:55:40,187 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:55:40,187 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:55:40,187 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:55:40,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:55:40,187 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:55:40,188 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:55:40,188 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:55:40,189 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:55:40,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:55:40,190 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:55:40,190 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_6377188c-cde1-438a-bdb6-c7e2eeb8b9d7/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6377188c-cde1-438a-bdb6-c7e2eeb8b9d7/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a0803bc25bdee4cec741e6286f7294c3704d91bb65e5684830693d517eafafb [2022-11-02 20:55:40,510 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:55:40,536 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:55:40,540 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:55:40,542 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:55:40,542 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:55:40,544 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6377188c-cde1-438a-bdb6-c7e2eeb8b9d7/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread-ext/12_fmaxsymopt_cas.i [2022-11-02 20:55:40,616 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6377188c-cde1-438a-bdb6-c7e2eeb8b9d7/bin/uautomizer-Dbtcem3rbc/data/08f1b1d93/2958f5bc59f24b9bbcf300fc6d09ea33/FLAG999e510cc [2022-11-02 20:55:41,192 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:55:41,193 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6377188c-cde1-438a-bdb6-c7e2eeb8b9d7/sv-benchmarks/c/pthread-ext/12_fmaxsymopt_cas.i [2022-11-02 20:55:41,204 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6377188c-cde1-438a-bdb6-c7e2eeb8b9d7/bin/uautomizer-Dbtcem3rbc/data/08f1b1d93/2958f5bc59f24b9bbcf300fc6d09ea33/FLAG999e510cc [2022-11-02 20:55:41,497 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6377188c-cde1-438a-bdb6-c7e2eeb8b9d7/bin/uautomizer-Dbtcem3rbc/data/08f1b1d93/2958f5bc59f24b9bbcf300fc6d09ea33 [2022-11-02 20:55:41,500 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:55:41,502 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:55:41,504 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:55:41,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:55:41,510 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:55:41,511 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:55:41" (1/1) ... [2022-11-02 20:55:41,513 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53ad26b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:41, skipping insertion in model container [2022-11-02 20:55:41,514 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:55:41" (1/1) ... [2022-11-02 20:55:41,521 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:55:41,579 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:55:41,970 WARN L230 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_6377188c-cde1-438a-bdb6-c7e2eeb8b9d7/sv-benchmarks/c/pthread-ext/12_fmaxsymopt_cas.i[30582,30595] [2022-11-02 20:55:41,977 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:55:41,986 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:55:42,043 WARN L230 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_6377188c-cde1-438a-bdb6-c7e2eeb8b9d7/sv-benchmarks/c/pthread-ext/12_fmaxsymopt_cas.i[30582,30595] [2022-11-02 20:55:42,047 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:55:42,075 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:55:42,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:42 WrapperNode [2022-11-02 20:55:42,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:55:42,077 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:55:42,077 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:55:42,077 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:55:42,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:42" (1/1) ... [2022-11-02 20:55:42,094 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:42" (1/1) ... [2022-11-02 20:55:42,119 INFO L138 Inliner]: procedures = 170, calls = 32, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 105 [2022-11-02 20:55:42,120 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:55:42,120 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:55:42,121 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:55:42,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:55:42,130 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:42" (1/1) ... [2022-11-02 20:55:42,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:42" (1/1) ... [2022-11-02 20:55:42,134 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:42" (1/1) ... [2022-11-02 20:55:42,134 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:42" (1/1) ... [2022-11-02 20:55:42,141 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:42" (1/1) ... [2022-11-02 20:55:42,146 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:42" (1/1) ... [2022-11-02 20:55:42,147 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:42" (1/1) ... [2022-11-02 20:55:42,151 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:42" (1/1) ... [2022-11-02 20:55:42,153 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:55:42,154 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:55:42,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:55:42,155 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:55:42,156 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:42" (1/1) ... [2022-11-02 20:55:42,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:55:42,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6377188c-cde1-438a-bdb6-c7e2eeb8b9d7/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:55:42,185 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6377188c-cde1-438a-bdb6-c7e2eeb8b9d7/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:55:42,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6377188c-cde1-438a-bdb6-c7e2eeb8b9d7/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:55:42,245 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:55:42,245 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-02 20:55:42,245 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-02 20:55:42,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:55:42,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:55:42,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:55:42,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:55:42,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:55:42,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:55:42,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:55:42,250 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:55:42,432 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:55:42,434 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:55:42,630 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:55:42,752 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:55:42,757 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-02 20:55:42,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:55:42 BoogieIcfgContainer [2022-11-02 20:55:42,763 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:55:42,771 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:55:42,771 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:55:42,775 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:55:42,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:55:41" (1/3) ... [2022-11-02 20:55:42,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f69f769 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:55:42, skipping insertion in model container [2022-11-02 20:55:42,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:42" (2/3) ... [2022-11-02 20:55:42,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f69f769 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:55:42, skipping insertion in model container [2022-11-02 20:55:42,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:55:42" (3/3) ... [2022-11-02 20:55:42,778 INFO L112 eAbstractionObserver]: Analyzing ICFG 12_fmaxsymopt_cas.i [2022-11-02 20:55:42,787 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:55:42,800 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:55:42,800 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-02 20:55:42,800 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:55:42,927 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:55:42,978 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 20:55:42,994 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 109 transitions, 223 flow [2022-11-02 20:55:43,002 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 101 places, 109 transitions, 223 flow [2022-11-02 20:55:43,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 109 transitions, 223 flow [2022-11-02 20:55:43,098 INFO L130 PetriNetUnfolder]: 12/120 cut-off events. [2022-11-02 20:55:43,099 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:55:43,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 120 events. 12/120 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 152 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 83. Up to 4 conditions per place. [2022-11-02 20:55:43,109 INFO L118 LiptonReduction]: Number of co-enabled transitions 1960 [2022-11-02 20:55:47,704 INFO L133 LiptonReduction]: Checked pairs total: 1875 [2022-11-02 20:55:47,705 INFO L135 LiptonReduction]: Total number of compositions: 120 [2022-11-02 20:55:47,715 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 19 places, 21 transitions, 47 flow [2022-11-02 20:55:47,736 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 53 states, 44 states have (on average 2.4545454545454546) internal successors, (108), 52 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:47,751 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:55:47,757 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;@3c100c25, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:55:47,758 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-11-02 20:55:47,760 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 44 states have (on average 2.4545454545454546) internal successors, (108), 52 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:47,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:55:47,765 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:47,765 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:55:47,766 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-02 20:55:47,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:47,771 INFO L85 PathProgramCache]: Analyzing trace with hash 496602826, now seen corresponding path program 1 times [2022-11-02 20:55:47,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:55:47,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108067476] [2022-11-02 20:55:47,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:47,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:55:47,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:48,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:55:48,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:55:48,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108067476] [2022-11-02 20:55:48,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108067476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:55:48,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:55:48,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:55:48,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977705175] [2022-11-02 20:55:48,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:55:48,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:55:48,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:55:48,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:55:48,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:55:48,252 INFO L87 Difference]: Start difference. First operand has 53 states, 44 states have (on average 2.4545454545454546) internal successors, (108), 52 states have internal predecessors, (108), 0 states have call successors, (0), 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), 3 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) [2022-11-02 20:55:48,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:55:48,312 INFO L93 Difference]: Finished difference Result 39 states and 74 transitions. [2022-11-02 20:55:48,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:55:48,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 [2022-11-02 20:55:48,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:55:48,322 INFO L225 Difference]: With dead ends: 39 [2022-11-02 20:55:48,323 INFO L226 Difference]: Without dead ends: 39 [2022-11-02 20:55:48,324 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 [2022-11-02 20:55:48,327 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 13 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:55:48,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 4 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:55:48,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-02 20:55:48,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-11-02 20:55:48,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 36 states have (on average 2.0555555555555554) internal successors, (74), 38 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:48,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 74 transitions. [2022-11-02 20:55:48,370 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 74 transitions. Word has length 5 [2022-11-02 20:55:48,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:55:48,371 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 74 transitions. [2022-11-02 20:55:48,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2022-11-02 20:55:48,372 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 74 transitions. [2022-11-02 20:55:48,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:55:48,374 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:48,374 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:55:48,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:55:48,374 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-02 20:55:48,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:48,375 INFO L85 PathProgramCache]: Analyzing trace with hash 496602747, now seen corresponding path program 1 times [2022-11-02 20:55:48,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:55:48,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200924541] [2022-11-02 20:55:48,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:48,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:55:48,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:48,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:55:48,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:55:48,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200924541] [2022-11-02 20:55:48,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200924541] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:55:48,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:55:48,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:55:48,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631597226] [2022-11-02 20:55:48,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:55:48,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:55:48,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:55:48,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:55:48,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:55:48,490 INFO L87 Difference]: Start difference. First operand 39 states and 74 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2022-11-02 20:55:48,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:55:48,519 INFO L93 Difference]: Finished difference Result 35 states and 67 transitions. [2022-11-02 20:55:48,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:55:48,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 [2022-11-02 20:55:48,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:55:48,521 INFO L225 Difference]: With dead ends: 35 [2022-11-02 20:55:48,521 INFO L226 Difference]: Without dead ends: 35 [2022-11-02 20:55:48,521 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 [2022-11-02 20:55:48,522 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 12 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:55:48,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 4 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:55:48,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-02 20:55:48,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-11-02 20:55:48,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 33 states have (on average 2.0303030303030303) internal successors, (67), 34 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:48,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 67 transitions. [2022-11-02 20:55:48,529 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 67 transitions. Word has length 5 [2022-11-02 20:55:48,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:55:48,529 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 67 transitions. [2022-11-02 20:55:48,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2022-11-02 20:55:48,530 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 67 transitions. [2022-11-02 20:55:48,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:55:48,530 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:48,530 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:55:48,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:55:48,531 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-02 20:55:48,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:48,531 INFO L85 PathProgramCache]: Analyzing trace with hash 496602900, now seen corresponding path program 1 times [2022-11-02 20:55:48,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:55:48,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861073570] [2022-11-02 20:55:48,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:48,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:55:48,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:48,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:55:48,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:55:48,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861073570] [2022-11-02 20:55:48,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861073570] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:55:48,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:55:48,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:55:48,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482142655] [2022-11-02 20:55:48,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:55:48,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:55:48,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:55:48,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:55:48,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:55:48,636 INFO L87 Difference]: Start difference. First operand 35 states and 67 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2022-11-02 20:55:48,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:55:48,661 INFO L93 Difference]: Finished difference Result 31 states and 60 transitions. [2022-11-02 20:55:48,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:55:48,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 [2022-11-02 20:55:48,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:55:48,663 INFO L225 Difference]: With dead ends: 31 [2022-11-02 20:55:48,664 INFO L226 Difference]: Without dead ends: 31 [2022-11-02 20:55:48,664 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 [2022-11-02 20:55:48,666 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:55:48,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 4 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:55:48,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-02 20:55:48,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-11-02 20:55:48,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 2.0) internal successors, (60), 30 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:48,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 60 transitions. [2022-11-02 20:55:48,679 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 60 transitions. Word has length 5 [2022-11-02 20:55:48,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:55:48,679 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 60 transitions. [2022-11-02 20:55:48,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2022-11-02 20:55:48,680 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 60 transitions. [2022-11-02 20:55:48,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-02 20:55:48,680 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:48,681 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-02 20:55:48,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:55:48,681 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-02 20:55:48,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:48,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1785280840, now seen corresponding path program 1 times [2022-11-02 20:55:48,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:55:48,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297991182] [2022-11-02 20:55:48,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:48,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:55:48,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:55:48,705 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:55:48,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:55:48,739 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:55:48,740 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:55:48,741 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2022-11-02 20:55:48,744 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 9 remaining) [2022-11-02 20:55:48,748 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 9 remaining) [2022-11-02 20:55:48,748 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 9 remaining) [2022-11-02 20:55:48,749 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 9 remaining) [2022-11-02 20:55:48,749 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 9 remaining) [2022-11-02 20:55:48,751 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 9 remaining) [2022-11-02 20:55:48,752 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 9 remaining) [2022-11-02 20:55:48,755 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 9 remaining) [2022-11-02 20:55:48,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:55:48,758 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-02 20:55:48,760 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:55:48,760 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-02 20:55:48,805 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:55:48,812 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 20:55:48,813 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 164 places, 180 transitions, 372 flow [2022-11-02 20:55:48,813 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 164 places, 180 transitions, 372 flow [2022-11-02 20:55:48,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 180 transitions, 372 flow [2022-11-02 20:55:48,902 INFO L130 PetriNetUnfolder]: 23/204 cut-off events. [2022-11-02 20:55:48,903 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:55:48,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 204 events. 23/204 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 474 event pairs, 0 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 153. Up to 6 conditions per place. [2022-11-02 20:55:48,918 INFO L118 LiptonReduction]: Number of co-enabled transitions 13860 [2022-11-02 20:56:00,828 INFO L133 LiptonReduction]: Checked pairs total: 17017 [2022-11-02 20:56:00,829 INFO L135 LiptonReduction]: Total number of compositions: 200 [2022-11-02 20:56:00,830 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 40 transitions, 92 flow [2022-11-02 20:56:00,915 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 885 states, 832 states have (on average 3.5997596153846154) internal successors, (2995), 884 states have internal predecessors, (2995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:00,917 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:56:00,919 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;@3c100c25, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:56:00,920 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-02 20:56:00,923 INFO L276 IsEmpty]: Start isEmpty. Operand has 885 states, 832 states have (on average 3.5997596153846154) internal successors, (2995), 884 states have internal predecessors, (2995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:00,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:56:00,924 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:00,924 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:56:00,924 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-02 20:56:00,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:00,925 INFO L85 PathProgramCache]: Analyzing trace with hash 910293237, now seen corresponding path program 1 times [2022-11-02 20:56:00,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:00,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784218040] [2022-11-02 20:56:00,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:00,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:00,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:01,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:01,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:01,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784218040] [2022-11-02 20:56:01,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784218040] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:01,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:01,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:56:01,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32086355] [2022-11-02 20:56:01,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:01,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:56:01,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:01,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:56:01,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:01,109 INFO L87 Difference]: Start difference. First operand has 885 states, 832 states have (on average 3.5997596153846154) internal successors, (2995), 884 states have internal predecessors, (2995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2022-11-02 20:56:01,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:01,289 INFO L93 Difference]: Finished difference Result 770 states and 2357 transitions. [2022-11-02 20:56:01,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:56:01,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 [2022-11-02 20:56:01,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:01,302 INFO L225 Difference]: With dead ends: 770 [2022-11-02 20:56:01,311 INFO L226 Difference]: Without dead ends: 770 [2022-11-02 20:56:01,311 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 [2022-11-02 20:56:01,312 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 19 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:01,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 12 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:56:01,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2022-11-02 20:56:01,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 711. [2022-11-02 20:56:01,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 695 states have (on average 3.228776978417266) internal successors, (2244), 710 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:01,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 2244 transitions. [2022-11-02 20:56:01,401 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 2244 transitions. Word has length 5 [2022-11-02 20:56:01,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:01,402 INFO L495 AbstractCegarLoop]: Abstraction has 711 states and 2244 transitions. [2022-11-02 20:56:01,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2022-11-02 20:56:01,402 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 2244 transitions. [2022-11-02 20:56:01,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:56:01,403 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:01,403 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:56:01,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:56:01,403 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-02 20:56:01,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:01,404 INFO L85 PathProgramCache]: Analyzing trace with hash 910293002, now seen corresponding path program 1 times [2022-11-02 20:56:01,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:01,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150361066] [2022-11-02 20:56:01,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:01,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:01,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:01,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:01,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:01,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150361066] [2022-11-02 20:56:01,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150361066] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:01,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:01,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:56:01,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064433757] [2022-11-02 20:56:01,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:01,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:56:01,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:01,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:56:01,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:01,492 INFO L87 Difference]: Start difference. First operand 711 states and 2244 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2022-11-02 20:56:01,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:01,643 INFO L93 Difference]: Finished difference Result 652 states and 2013 transitions. [2022-11-02 20:56:01,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:56:01,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 [2022-11-02 20:56:01,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:01,649 INFO L225 Difference]: With dead ends: 652 [2022-11-02 20:56:01,649 INFO L226 Difference]: Without dead ends: 652 [2022-11-02 20:56:01,649 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 [2022-11-02 20:56:01,650 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 29 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:01,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 12 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:56:01,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2022-11-02 20:56:01,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 652. [2022-11-02 20:56:01,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 640 states have (on average 3.1453125) internal successors, (2013), 651 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:01,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 2013 transitions. [2022-11-02 20:56:01,681 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 2013 transitions. Word has length 5 [2022-11-02 20:56:01,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:01,681 INFO L495 AbstractCegarLoop]: Abstraction has 652 states and 2013 transitions. [2022-11-02 20:56:01,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2022-11-02 20:56:01,682 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 2013 transitions. [2022-11-02 20:56:01,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-02 20:56:01,682 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:01,682 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-02 20:56:01,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:56:01,683 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-02 20:56:01,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:01,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1845679827, now seen corresponding path program 1 times [2022-11-02 20:56:01,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:01,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438362565] [2022-11-02 20:56:01,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:01,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:01,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:01,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:01,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:01,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438362565] [2022-11-02 20:56:01,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438362565] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:01,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:01,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:56:01,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363463224] [2022-11-02 20:56:01,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:01,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:56:01,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:01,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:56:01,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:01,721 INFO L87 Difference]: Start difference. First operand 652 states and 2013 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:01,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:01,838 INFO L93 Difference]: Finished difference Result 593 states and 1841 transitions. [2022-11-02 20:56:01,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:56:01,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2022-11-02 20:56:01,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:01,843 INFO L225 Difference]: With dead ends: 593 [2022-11-02 20:56:01,843 INFO L226 Difference]: Without dead ends: 593 [2022-11-02 20:56:01,843 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 [2022-11-02 20:56:01,844 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 27 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:01,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 12 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:56:01,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2022-11-02 20:56:01,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593. [2022-11-02 20:56:01,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 585 states have (on average 3.147008547008547) internal successors, (1841), 592 states have internal predecessors, (1841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:01,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 1841 transitions. [2022-11-02 20:56:01,867 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 1841 transitions. Word has length 6 [2022-11-02 20:56:01,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:01,868 INFO L495 AbstractCegarLoop]: Abstraction has 593 states and 1841 transitions. [2022-11-02 20:56:01,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:01,868 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 1841 transitions. [2022-11-02 20:56:01,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-02 20:56:01,869 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:01,869 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-02 20:56:01,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:56:01,869 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-02 20:56:01,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:01,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1845679984, now seen corresponding path program 1 times [2022-11-02 20:56:01,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:01,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20214790] [2022-11-02 20:56:01,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:01,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:01,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:01,943 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:01,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:01,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20214790] [2022-11-02 20:56:01,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20214790] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:56:01,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845666017] [2022-11-02 20:56:01,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:01,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:01,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6377188c-cde1-438a-bdb6-c7e2eeb8b9d7/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:01,951 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6377188c-cde1-438a-bdb6-c7e2eeb8b9d7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:56:01,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6377188c-cde1-438a-bdb6-c7e2eeb8b9d7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:56:02,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:02,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:56:02,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:02,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:02,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:56:02,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:02,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845666017] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:56:02,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:56:02,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 6 [2022-11-02 20:56:02,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808425083] [2022-11-02 20:56:02,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:02,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:56:02,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:02,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:56:02,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:56:02,132 INFO L87 Difference]: Start difference. First operand 593 states and 1841 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:02,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:02,234 INFO L93 Difference]: Finished difference Result 534 states and 1669 transitions. [2022-11-02 20:56:02,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:56:02,234 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2022-11-02 20:56:02,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:02,238 INFO L225 Difference]: With dead ends: 534 [2022-11-02 20:56:02,238 INFO L226 Difference]: Without dead ends: 534 [2022-11-02 20:56:02,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:56:02,239 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 53 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:02,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 12 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:56:02,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2022-11-02 20:56:02,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 534. [2022-11-02 20:56:02,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 530 states have (on average 3.1490566037735848) internal successors, (1669), 533 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:02,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 1669 transitions. [2022-11-02 20:56:02,258 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 1669 transitions. Word has length 6 [2022-11-02 20:56:02,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:02,258 INFO L495 AbstractCegarLoop]: Abstraction has 534 states and 1669 transitions. [2022-11-02 20:56:02,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:02,259 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 1669 transitions. [2022-11-02 20:56:02,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:56:02,259 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:02,259 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:02,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6377188c-cde1-438a-bdb6-c7e2eeb8b9d7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:02,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6377188c-cde1-438a-bdb6-c7e2eeb8b9d7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:02,483 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-02 20:56:02,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:02,483 INFO L85 PathProgramCache]: Analyzing trace with hash -549691889, now seen corresponding path program 1 times [2022-11-02 20:56:02,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:02,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511626722] [2022-11-02 20:56:02,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:02,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:02,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:02,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:56:02,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:02,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511626722] [2022-11-02 20:56:02,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511626722] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:02,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:02,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:56:02,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477045026] [2022-11-02 20:56:02,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:02,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:56:02,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:02,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:56:02,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:02,600 INFO L87 Difference]: Start difference. First operand 534 states and 1669 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:02,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:02,704 INFO L93 Difference]: Finished difference Result 489 states and 1533 transitions. [2022-11-02 20:56:02,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:56:02,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 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 [2022-11-02 20:56:02,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:02,709 INFO L225 Difference]: With dead ends: 489 [2022-11-02 20:56:02,709 INFO L226 Difference]: Without dead ends: 489 [2022-11-02 20:56:02,709 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 [2022-11-02 20:56:02,710 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 25 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:02,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 9 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:56:02,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2022-11-02 20:56:02,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 489. [2022-11-02 20:56:02,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 486 states have (on average 3.154320987654321) internal successors, (1533), 488 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:02,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 1533 transitions. [2022-11-02 20:56:02,733 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 1533 transitions. Word has length 9 [2022-11-02 20:56:02,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:02,733 INFO L495 AbstractCegarLoop]: Abstraction has 489 states and 1533 transitions. [2022-11-02 20:56:02,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:02,734 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 1533 transitions. [2022-11-02 20:56:02,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:56:02,735 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:02,735 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:02,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:56:02,735 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-02 20:56:02,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:02,736 INFO L85 PathProgramCache]: Analyzing trace with hash -549692081, now seen corresponding path program 1 times [2022-11-02 20:56:02,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:02,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41562554] [2022-11-02 20:56:02,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:02,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:02,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:02,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:56:02,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:02,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41562554] [2022-11-02 20:56:02,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41562554] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:02,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:02,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:56:02,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322858899] [2022-11-02 20:56:02,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:02,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:56:02,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:02,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:56:02,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:02,803 INFO L87 Difference]: Start difference. First operand 489 states and 1533 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:02,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:02,903 INFO L93 Difference]: Finished difference Result 444 states and 1397 transitions. [2022-11-02 20:56:02,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:56:02,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 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 [2022-11-02 20:56:02,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:02,907 INFO L225 Difference]: With dead ends: 444 [2022-11-02 20:56:02,907 INFO L226 Difference]: Without dead ends: 444 [2022-11-02 20:56:02,907 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 [2022-11-02 20:56:02,908 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 24 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:02,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 9 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:56:02,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2022-11-02 20:56:02,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 444. [2022-11-02 20:56:02,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 442 states have (on average 3.160633484162896) internal successors, (1397), 443 states have internal predecessors, (1397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:02,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 1397 transitions. [2022-11-02 20:56:02,925 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 1397 transitions. Word has length 9 [2022-11-02 20:56:02,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:02,925 INFO L495 AbstractCegarLoop]: Abstraction has 444 states and 1397 transitions. [2022-11-02 20:56:02,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:02,926 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 1397 transitions. [2022-11-02 20:56:02,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:56:02,926 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:02,926 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:02,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:56:02,927 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-02 20:56:02,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:02,927 INFO L85 PathProgramCache]: Analyzing trace with hash -549691771, now seen corresponding path program 1 times [2022-11-02 20:56:02,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:02,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901646430] [2022-11-02 20:56:02,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:02,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:02,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:03,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:56:03,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:03,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901646430] [2022-11-02 20:56:03,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901646430] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:03,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:03,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:56:03,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634990870] [2022-11-02 20:56:03,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:03,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:56:03,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:03,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:56:03,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:03,015 INFO L87 Difference]: Start difference. First operand 444 states and 1397 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:03,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:03,130 INFO L93 Difference]: Finished difference Result 489 states and 1533 transitions. [2022-11-02 20:56:03,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:56:03,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 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 [2022-11-02 20:56:03,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:03,134 INFO L225 Difference]: With dead ends: 489 [2022-11-02 20:56:03,134 INFO L226 Difference]: Without dead ends: 489 [2022-11-02 20:56:03,134 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 [2022-11-02 20:56:03,135 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 14 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:03,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 9 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:56:03,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2022-11-02 20:56:03,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 489. [2022-11-02 20:56:03,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 487 states have (on average 3.1478439425051334) internal successors, (1533), 488 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:03,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 1533 transitions. [2022-11-02 20:56:03,172 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 1533 transitions. Word has length 9 [2022-11-02 20:56:03,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:03,172 INFO L495 AbstractCegarLoop]: Abstraction has 489 states and 1533 transitions. [2022-11-02 20:56:03,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:03,172 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 1533 transitions. [2022-11-02 20:56:03,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-02 20:56:03,173 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:03,173 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:03,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:56:03,174 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-02 20:56:03,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:03,174 INFO L85 PathProgramCache]: Analyzing trace with hash 139425310, now seen corresponding path program 1 times [2022-11-02 20:56:03,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:03,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475096557] [2022-11-02 20:56:03,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:03,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:03,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:03,212 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:56:03,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:03,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475096557] [2022-11-02 20:56:03,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475096557] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:03,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:03,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:56:03,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344164775] [2022-11-02 20:56:03,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:03,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:56:03,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:03,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:56:03,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:03,215 INFO L87 Difference]: Start difference. First operand 489 states and 1533 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) [2022-11-02 20:56:03,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:03,309 INFO L93 Difference]: Finished difference Result 444 states and 1397 transitions. [2022-11-02 20:56:03,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:56:03,309 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 10 [2022-11-02 20:56:03,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:03,312 INFO L225 Difference]: With dead ends: 444 [2022-11-02 20:56:03,312 INFO L226 Difference]: Without dead ends: 444 [2022-11-02 20:56:03,312 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 [2022-11-02 20:56:03,313 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 22 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:03,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 9 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:56:03,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2022-11-02 20:56:03,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 444. [2022-11-02 20:56:03,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 443 states have (on average 3.1534988713318284) internal successors, (1397), 443 states have internal predecessors, (1397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:03,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 1397 transitions. [2022-11-02 20:56:03,329 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 1397 transitions. Word has length 10 [2022-11-02 20:56:03,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:03,329 INFO L495 AbstractCegarLoop]: Abstraction has 444 states and 1397 transitions. [2022-11-02 20:56:03,329 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) [2022-11-02 20:56:03,329 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 1397 transitions. [2022-11-02 20:56:03,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:56:03,330 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:03,330 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-02 20:56:03,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 20:56:03,331 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-02 20:56:03,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:03,331 INFO L85 PathProgramCache]: Analyzing trace with hash 13754198, now seen corresponding path program 1 times [2022-11-02 20:56:03,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:03,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947899049] [2022-11-02 20:56:03,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:03,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:03,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:56:03,341 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:56:03,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:56:03,351 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:56:03,351 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:56:03,351 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-11-02 20:56:03,351 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-11-02 20:56:03,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-11-02 20:56:03,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-11-02 20:56:03,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-11-02 20:56:03,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-11-02 20:56:03,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-11-02 20:56:03,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-11-02 20:56:03,353 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-11-02 20:56:03,353 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-11-02 20:56:03,353 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-11-02 20:56:03,353 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-11-02 20:56:03,353 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-11-02 20:56:03,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 20:56:03,354 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:03,354 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:56:03,354 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-02 20:56:03,402 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:56:03,404 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 20:56:03,405 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 227 places, 251 transitions, 523 flow [2022-11-02 20:56:03,405 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 227 places, 251 transitions, 523 flow [2022-11-02 20:56:03,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 227 places, 251 transitions, 523 flow [2022-11-02 20:56:03,479 INFO L130 PetriNetUnfolder]: 34/288 cut-off events. [2022-11-02 20:56:03,479 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-02 20:56:03,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 288 events. 34/288 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 855 event pairs, 0 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 223. Up to 8 conditions per place. [2022-11-02 20:56:03,501 INFO L118 LiptonReduction]: Number of co-enabled transitions 35700 [2022-11-02 20:56:15,827 INFO L133 LiptonReduction]: Checked pairs total: 45273 [2022-11-02 20:56:15,827 INFO L135 LiptonReduction]: Total number of compositions: 286 [2022-11-02 20:56:15,828 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 49 places, 57 transitions, 135 flow [2022-11-02 20:56:16,426 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 10893 states, 10616 states have (on average 4.8442916352675205) internal successors, (51427), 10892 states have internal predecessors, (51427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:16,427 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:56:16,427 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;@3c100c25, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:56:16,428 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-02 20:56:16,456 INFO L276 IsEmpty]: Start isEmpty. Operand has 10893 states, 10616 states have (on average 4.8442916352675205) internal successors, (51427), 10892 states have internal predecessors, (51427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:16,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:56:16,457 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:16,457 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:56:16,457 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-02 20:56:16,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:16,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1502552010, now seen corresponding path program 1 times [2022-11-02 20:56:16,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:16,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110398654] [2022-11-02 20:56:16,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:16,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:16,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:16,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:16,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:16,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110398654] [2022-11-02 20:56:16,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110398654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:16,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:16,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:56:16,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494318055] [2022-11-02 20:56:16,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:16,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:56:16,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:16,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:56:16,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:16,562 INFO L87 Difference]: Start difference. First operand has 10893 states, 10616 states have (on average 4.8442916352675205) internal successors, (51427), 10892 states have internal predecessors, (51427), 0 states have call successors, (0), 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), 3 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) [2022-11-02 20:56:16,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:16,821 INFO L93 Difference]: Finished difference Result 6533 states and 27979 transitions. [2022-11-02 20:56:16,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:56:16,822 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 [2022-11-02 20:56:16,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:16,995 INFO L225 Difference]: With dead ends: 6533 [2022-11-02 20:56:16,995 INFO L226 Difference]: Without dead ends: 6533 [2022-11-02 20:56:16,995 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 [2022-11-02 20:56:16,996 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 42 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:16,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 19 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:56:17,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6533 states. [2022-11-02 20:56:17,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6533 to 6533. [2022-11-02 20:56:17,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6533 states, 6485 states have (on average 4.314417887432537) internal successors, (27979), 6532 states have internal predecessors, (27979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:17,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6533 states to 6533 states and 27979 transitions. [2022-11-02 20:56:17,341 INFO L78 Accepts]: Start accepts. Automaton has 6533 states and 27979 transitions. Word has length 5 [2022-11-02 20:56:17,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:17,341 INFO L495 AbstractCegarLoop]: Abstraction has 6533 states and 27979 transitions. [2022-11-02 20:56:17,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2022-11-02 20:56:17,341 INFO L276 IsEmpty]: Start isEmpty. Operand 6533 states and 27979 transitions. [2022-11-02 20:56:17,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:56:17,342 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:17,342 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:56:17,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 20:56:17,342 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-02 20:56:17,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:17,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1502551837, now seen corresponding path program 1 times [2022-11-02 20:56:17,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:17,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198175745] [2022-11-02 20:56:17,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:17,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:17,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:17,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:17,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:17,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198175745] [2022-11-02 20:56:17,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198175745] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:17,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:17,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:56:17,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813221795] [2022-11-02 20:56:17,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:17,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:56:17,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:17,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:56:17,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:17,493 INFO L87 Difference]: Start difference. First operand 6533 states and 27979 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2022-11-02 20:56:17,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:17,789 INFO L93 Difference]: Finished difference Result 5880 states and 25312 transitions. [2022-11-02 20:56:17,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:56:17,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 [2022-11-02 20:56:17,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:17,915 INFO L225 Difference]: With dead ends: 5880 [2022-11-02 20:56:17,916 INFO L226 Difference]: Without dead ends: 5880 [2022-11-02 20:56:17,916 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 [2022-11-02 20:56:17,917 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 42 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:17,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 18 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:56:17,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5880 states. [2022-11-02 20:56:18,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5880 to 5880. [2022-11-02 20:56:18,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5880 states, 5848 states have (on average 4.3283173734610125) internal successors, (25312), 5879 states have internal predecessors, (25312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:18,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5880 states to 5880 states and 25312 transitions. [2022-11-02 20:56:18,395 INFO L78 Accepts]: Start accepts. Automaton has 5880 states and 25312 transitions. Word has length 5 [2022-11-02 20:56:18,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:18,395 INFO L495 AbstractCegarLoop]: Abstraction has 5880 states and 25312 transitions. [2022-11-02 20:56:18,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2022-11-02 20:56:18,396 INFO L276 IsEmpty]: Start isEmpty. Operand 5880 states and 25312 transitions. [2022-11-02 20:56:18,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:56:18,396 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:18,396 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:56:18,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-02 20:56:18,397 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-02 20:56:18,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:18,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1502551615, now seen corresponding path program 1 times [2022-11-02 20:56:18,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:18,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948781072] [2022-11-02 20:56:18,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:18,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:18,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:18,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:18,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:18,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948781072] [2022-11-02 20:56:18,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948781072] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:18,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:18,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:56:18,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734509384] [2022-11-02 20:56:18,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:18,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:56:18,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:18,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:56:18,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:18,570 INFO L87 Difference]: Start difference. First operand 5880 states and 25312 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2022-11-02 20:56:18,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:18,777 INFO L93 Difference]: Finished difference Result 5227 states and 22645 transitions. [2022-11-02 20:56:18,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:56:18,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 [2022-11-02 20:56:18,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:18,812 INFO L225 Difference]: With dead ends: 5227 [2022-11-02 20:56:18,812 INFO L226 Difference]: Without dead ends: 5227 [2022-11-02 20:56:18,813 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 [2022-11-02 20:56:18,813 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 41 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:18,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 18 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:56:18,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5227 states. [2022-11-02 20:56:19,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5227 to 5227. [2022-11-02 20:56:19,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5227 states, 5211 states have (on average 4.345615045096911) internal successors, (22645), 5226 states have internal predecessors, (22645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:19,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5227 states to 5227 states and 22645 transitions. [2022-11-02 20:56:19,146 INFO L78 Accepts]: Start accepts. Automaton has 5227 states and 22645 transitions. Word has length 5 [2022-11-02 20:56:19,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:19,147 INFO L495 AbstractCegarLoop]: Abstraction has 5227 states and 22645 transitions. [2022-11-02 20:56:19,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2022-11-02 20:56:19,147 INFO L276 IsEmpty]: Start isEmpty. Operand 5227 states and 22645 transitions. [2022-11-02 20:56:19,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:56:19,148 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:19,148 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:19,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-02 20:56:19,149 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-02 20:56:19,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:19,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1550281898, now seen corresponding path program 1 times [2022-11-02 20:56:19,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:19,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618487903] [2022-11-02 20:56:19,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:19,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:19,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:19,287 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:56:19,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:19,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618487903] [2022-11-02 20:56:19,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618487903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:19,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:19,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:56:19,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832267464] [2022-11-02 20:56:19,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:19,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:56:19,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:19,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:56:19,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:19,293 INFO L87 Difference]: Start difference. First operand 5227 states and 22645 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:19,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:19,551 INFO L93 Difference]: Finished difference Result 4755 states and 20679 transitions. [2022-11-02 20:56:19,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:56:19,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 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 [2022-11-02 20:56:19,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:19,580 INFO L225 Difference]: With dead ends: 4755 [2022-11-02 20:56:19,580 INFO L226 Difference]: Without dead ends: 4755 [2022-11-02 20:56:19,582 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 [2022-11-02 20:56:19,583 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 38 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:19,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 16 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:56:19,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4755 states. [2022-11-02 20:56:19,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4755 to 4755. [2022-11-02 20:56:19,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4755 states, 4743 states have (on average 4.359898798228969) internal successors, (20679), 4754 states have internal predecessors, (20679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:19,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4755 states to 4755 states and 20679 transitions. [2022-11-02 20:56:19,858 INFO L78 Accepts]: Start accepts. Automaton has 4755 states and 20679 transitions. Word has length 9 [2022-11-02 20:56:19,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:19,858 INFO L495 AbstractCegarLoop]: Abstraction has 4755 states and 20679 transitions. [2022-11-02 20:56:19,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:19,858 INFO L276 IsEmpty]: Start isEmpty. Operand 4755 states and 20679 transitions. [2022-11-02 20:56:19,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:56:19,871 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:19,871 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:19,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-02 20:56:19,872 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-02 20:56:19,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:19,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1550282071, now seen corresponding path program 1 times [2022-11-02 20:56:19,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:19,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322011654] [2022-11-02 20:56:19,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:19,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:19,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:56:19,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:19,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322011654] [2022-11-02 20:56:19,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322011654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:19,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:19,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:56:19,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858422242] [2022-11-02 20:56:19,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:19,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:56:19,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:19,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:56:19,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:19,979 INFO L87 Difference]: Start difference. First operand 4755 states and 20679 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:20,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:20,141 INFO L93 Difference]: Finished difference Result 4283 states and 18713 transitions. [2022-11-02 20:56:20,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:56:20,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 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 [2022-11-02 20:56:20,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:20,158 INFO L225 Difference]: With dead ends: 4283 [2022-11-02 20:56:20,158 INFO L226 Difference]: Without dead ends: 4283 [2022-11-02 20:56:20,158 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 [2022-11-02 20:56:20,159 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 38 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:20,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 15 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:56:20,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4283 states. [2022-11-02 20:56:20,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4283 to 4283. [2022-11-02 20:56:20,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4283 states, 4275 states have (on average 4.377309941520468) internal successors, (18713), 4282 states have internal predecessors, (18713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:20,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4283 states to 4283 states and 18713 transitions. [2022-11-02 20:56:20,453 INFO L78 Accepts]: Start accepts. Automaton has 4283 states and 18713 transitions. Word has length 9 [2022-11-02 20:56:20,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:20,453 INFO L495 AbstractCegarLoop]: Abstraction has 4283 states and 18713 transitions. [2022-11-02 20:56:20,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:20,453 INFO L276 IsEmpty]: Start isEmpty. Operand 4283 states and 18713 transitions. [2022-11-02 20:56:20,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:56:20,454 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:20,454 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:20,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-02 20:56:20,456 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-02 20:56:20,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:20,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1550282214, now seen corresponding path program 1 times [2022-11-02 20:56:20,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:20,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130395365] [2022-11-02 20:56:20,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:20,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:20,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:20,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:56:20,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:20,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130395365] [2022-11-02 20:56:20,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130395365] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:20,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:20,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:56:20,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537499992] [2022-11-02 20:56:20,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:20,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:56:20,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:20,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:56:20,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:20,558 INFO L87 Difference]: Start difference. First operand 4283 states and 18713 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:20,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:20,799 INFO L93 Difference]: Finished difference Result 3811 states and 16747 transitions. [2022-11-02 20:56:20,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:56:20,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 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 [2022-11-02 20:56:20,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:20,951 INFO L225 Difference]: With dead ends: 3811 [2022-11-02 20:56:20,951 INFO L226 Difference]: Without dead ends: 3811 [2022-11-02 20:56:20,951 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 [2022-11-02 20:56:20,952 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 37 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:20,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 15 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:56:20,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3811 states. [2022-11-02 20:56:21,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3811 to 3811. [2022-11-02 20:56:21,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3811 states, 3807 states have (on average 4.399001838718151) internal successors, (16747), 3810 states have internal predecessors, (16747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:21,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3811 states to 3811 states and 16747 transitions. [2022-11-02 20:56:21,128 INFO L78 Accepts]: Start accepts. Automaton has 3811 states and 16747 transitions. Word has length 9 [2022-11-02 20:56:21,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:21,128 INFO L495 AbstractCegarLoop]: Abstraction has 3811 states and 16747 transitions. [2022-11-02 20:56:21,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:21,128 INFO L276 IsEmpty]: Start isEmpty. Operand 3811 states and 16747 transitions. [2022-11-02 20:56:21,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:56:21,129 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:21,129 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:21,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-02 20:56:21,130 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-02 20:56:21,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:21,131 INFO L85 PathProgramCache]: Analyzing trace with hash 701900102, now seen corresponding path program 1 times [2022-11-02 20:56:21,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:21,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203532308] [2022-11-02 20:56:21,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:21,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:21,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:21,253 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 20:56:21,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:21,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203532308] [2022-11-02 20:56:21,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203532308] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:21,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:21,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:56:21,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82807846] [2022-11-02 20:56:21,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:21,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:56:21,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:21,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:56:21,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:21,256 INFO L87 Difference]: Start difference. First operand 3811 states and 16747 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) [2022-11-02 20:56:21,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:21,470 INFO L93 Difference]: Finished difference Result 4451 states and 19499 transitions. [2022-11-02 20:56:21,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:56:21,471 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 13 [2022-11-02 20:56:21,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:21,504 INFO L225 Difference]: With dead ends: 4451 [2022-11-02 20:56:21,505 INFO L226 Difference]: Without dead ends: 4451 [2022-11-02 20:56:21,505 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 [2022-11-02 20:56:21,506 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 25 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:21,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 11 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:56:21,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4451 states. [2022-11-02 20:56:21,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4451 to 4131. [2022-11-02 20:56:21,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4131 states, 4127 states have (on average 4.468863581293918) internal successors, (18443), 4130 states have internal predecessors, (18443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:21,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4131 states to 4131 states and 18443 transitions. [2022-11-02 20:56:21,693 INFO L78 Accepts]: Start accepts. Automaton has 4131 states and 18443 transitions. Word has length 13 [2022-11-02 20:56:21,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:21,695 INFO L495 AbstractCegarLoop]: Abstraction has 4131 states and 18443 transitions. [2022-11-02 20:56:21,695 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) [2022-11-02 20:56:21,696 INFO L276 IsEmpty]: Start isEmpty. Operand 4131 states and 18443 transitions. [2022-11-02 20:56:21,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:56:21,697 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:21,697 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:21,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-02 20:56:21,697 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-02 20:56:21,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:21,697 INFO L85 PathProgramCache]: Analyzing trace with hash 701899639, now seen corresponding path program 1 times [2022-11-02 20:56:21,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:21,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483787282] [2022-11-02 20:56:21,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:21,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:21,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:21,781 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 20:56:21,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:21,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483787282] [2022-11-02 20:56:21,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483787282] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:21,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:21,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:56:21,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529502254] [2022-11-02 20:56:21,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:21,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:56:21,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:21,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:56:21,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:21,785 INFO L87 Difference]: Start difference. First operand 4131 states and 18443 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) [2022-11-02 20:56:22,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:22,026 INFO L93 Difference]: Finished difference Result 3811 states and 16747 transitions. [2022-11-02 20:56:22,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:56:22,026 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 13 [2022-11-02 20:56:22,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:22,049 INFO L225 Difference]: With dead ends: 3811 [2022-11-02 20:56:22,049 INFO L226 Difference]: Without dead ends: 3811 [2022-11-02 20:56:22,049 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 [2022-11-02 20:56:22,050 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 35 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:22,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 10 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:56:22,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3811 states. [2022-11-02 20:56:22,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3811 to 3811. [2022-11-02 20:56:22,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3811 states, 3808 states have (on average 4.397846638655462) internal successors, (16747), 3810 states have internal predecessors, (16747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:22,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3811 states to 3811 states and 16747 transitions. [2022-11-02 20:56:22,168 INFO L78 Accepts]: Start accepts. Automaton has 3811 states and 16747 transitions. Word has length 13 [2022-11-02 20:56:22,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:22,169 INFO L495 AbstractCegarLoop]: Abstraction has 3811 states and 16747 transitions. [2022-11-02 20:56:22,169 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) [2022-11-02 20:56:22,169 INFO L276 IsEmpty]: Start isEmpty. Operand 3811 states and 16747 transitions. [2022-11-02 20:56:22,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-02 20:56:22,170 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:22,170 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:22,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-02 20:56:22,171 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-02 20:56:22,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:22,173 INFO L85 PathProgramCache]: Analyzing trace with hash 284068251, now seen corresponding path program 1 times [2022-11-02 20:56:22,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:22,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366741570] [2022-11-02 20:56:22,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:22,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:22,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:22,221 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 20:56:22,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:22,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366741570] [2022-11-02 20:56:22,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366741570] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:22,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:22,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:56:22,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398526885] [2022-11-02 20:56:22,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:22,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:56:22,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:22,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:56:22,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:22,224 INFO L87 Difference]: Start difference. First operand 3811 states and 16747 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:22,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:22,399 INFO L93 Difference]: Finished difference Result 3491 states and 15371 transitions. [2022-11-02 20:56:22,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:56:22,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 14 [2022-11-02 20:56:22,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:22,418 INFO L225 Difference]: With dead ends: 3491 [2022-11-02 20:56:22,418 INFO L226 Difference]: Without dead ends: 3491 [2022-11-02 20:56:22,419 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 [2022-11-02 20:56:22,420 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 33 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:22,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 10 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:56:22,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3491 states. [2022-11-02 20:56:22,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3491 to 3491. [2022-11-02 20:56:22,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3491 states, 3489 states have (on average 4.405560332473488) internal successors, (15371), 3490 states have internal predecessors, (15371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:22,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3491 states to 3491 states and 15371 transitions. [2022-11-02 20:56:22,531 INFO L78 Accepts]: Start accepts. Automaton has 3491 states and 15371 transitions. Word has length 14 [2022-11-02 20:56:22,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:22,533 INFO L495 AbstractCegarLoop]: Abstraction has 3491 states and 15371 transitions. [2022-11-02 20:56:22,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:22,533 INFO L276 IsEmpty]: Start isEmpty. Operand 3491 states and 15371 transitions. [2022-11-02 20:56:22,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-02 20:56:22,534 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:22,534 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:22,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-02 20:56:22,534 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-02 20:56:22,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:22,535 INFO L85 PathProgramCache]: Analyzing trace with hash 284068024, now seen corresponding path program 1 times [2022-11-02 20:56:22,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:22,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517045440] [2022-11-02 20:56:22,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:22,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:22,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:22,595 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 20:56:22,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:22,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517045440] [2022-11-02 20:56:22,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517045440] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:56:22,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593604830] [2022-11-02 20:56:22,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:22,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:22,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6377188c-cde1-438a-bdb6-c7e2eeb8b9d7/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:22,599 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6377188c-cde1-438a-bdb6-c7e2eeb8b9d7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:56:22,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6377188c-cde1-438a-bdb6-c7e2eeb8b9d7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:56:22,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:22,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:56:22,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:22,748 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 20:56:22,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:56:22,800 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 20:56:22,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593604830] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:56:22,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:56:22,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 6 [2022-11-02 20:56:22,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582062319] [2022-11-02 20:56:22,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:22,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:56:22,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:22,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:56:22,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:56:22,802 INFO L87 Difference]: Start difference. First operand 3491 states and 15371 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:23,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:23,017 INFO L93 Difference]: Finished difference Result 3171 states and 13995 transitions. [2022-11-02 20:56:23,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:56:23,018 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 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 14 [2022-11-02 20:56:23,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:23,039 INFO L225 Difference]: With dead ends: 3171 [2022-11-02 20:56:23,039 INFO L226 Difference]: Without dead ends: 3171 [2022-11-02 20:56:23,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:56:23,041 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 33 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:23,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 13 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:56:23,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3171 states. [2022-11-02 20:56:23,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3171 to 3171. [2022-11-02 20:56:23,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3171 states, 3170 states have (on average 4.414826498422713) internal successors, (13995), 3170 states have internal predecessors, (13995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:23,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3171 states to 3171 states and 13995 transitions. [2022-11-02 20:56:23,174 INFO L78 Accepts]: Start accepts. Automaton has 3171 states and 13995 transitions. Word has length 14 [2022-11-02 20:56:23,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:23,174 INFO L495 AbstractCegarLoop]: Abstraction has 3171 states and 13995 transitions. [2022-11-02 20:56:23,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:23,174 INFO L276 IsEmpty]: Start isEmpty. Operand 3171 states and 13995 transitions. [2022-11-02 20:56:23,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-02 20:56:23,176 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:23,176 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-11-02 20:56:23,210 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6377188c-cde1-438a-bdb6-c7e2eeb8b9d7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-02 20:56:23,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6377188c-cde1-438a-bdb6-c7e2eeb8b9d7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-02 20:56:23,390 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-02 20:56:23,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:23,391 INFO L85 PathProgramCache]: Analyzing trace with hash 197895583, now seen corresponding path program 1 times [2022-11-02 20:56:23,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:23,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29001440] [2022-11-02 20:56:23,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:23,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:23,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:56:23,414 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:56:23,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:56:23,442 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:56:23,442 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:56:23,443 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-02 20:56:23,443 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-11-02 20:56:23,443 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-11-02 20:56:23,443 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-11-02 20:56:23,443 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-11-02 20:56:23,443 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-11-02 20:56:23,444 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-11-02 20:56:23,444 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-11-02 20:56:23,444 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-11-02 20:56:23,444 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-11-02 20:56:23,444 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-11-02 20:56:23,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-11-02 20:56:23,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-11-02 20:56:23,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-11-02 20:56:23,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-11-02 20:56:23,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-11-02 20:56:23,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-11-02 20:56:23,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-02 20:56:23,446 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:23,446 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:56:23,446 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-02 20:56:23,568 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:56:23,574 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 20:56:23,574 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 290 places, 322 transitions, 676 flow [2022-11-02 20:56:23,574 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 290 places, 322 transitions, 676 flow [2022-11-02 20:56:23,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 290 places, 322 transitions, 676 flow [2022-11-02 20:56:23,658 INFO L130 PetriNetUnfolder]: 45/372 cut-off events. [2022-11-02 20:56:23,659 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-02 20:56:23,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 395 conditions, 372 events. 45/372 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1294 event pairs, 0 based on Foata normal form. 0/306 useless extension candidates. Maximal degree in co-relation 296. Up to 10 conditions per place. [2022-11-02 20:56:23,692 INFO L118 LiptonReduction]: Number of co-enabled transitions 67480 [2022-11-02 20:56:54,582 INFO L133 LiptonReduction]: Checked pairs total: 84872 [2022-11-02 20:56:54,582 INFO L135 LiptonReduction]: Total number of compositions: 360 [2022-11-02 20:56:54,583 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 63 places, 74 transitions, 180 flow [2022-11-02 20:56:59,720 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 132285 states, 130884 states have (on average 6.126119311756976) internal successors, (801811), 132284 states have internal predecessors, (801811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:59,751 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:56:59,752 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;@3c100c25, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:56:59,752 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-02 20:56:59,985 INFO L276 IsEmpty]: Start isEmpty. Operand has 132285 states, 130884 states have (on average 6.126119311756976) internal successors, (801811), 132284 states have internal predecessors, (801811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:59,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:56:59,985 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:59,985 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:56:59,986 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-02 20:56:59,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:59,988 INFO L85 PathProgramCache]: Analyzing trace with hash -2072704838, now seen corresponding path program 1 times [2022-11-02 20:56:59,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:59,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66801451] [2022-11-02 20:56:59,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:59,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:00,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:00,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:57:00,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:00,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66801451] [2022-11-02 20:57:00,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66801451] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:57:00,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:57:00,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:57:00,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823161715] [2022-11-02 20:57:00,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:57:00,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:57:00,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:00,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:57:00,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:57:00,311 INFO L87 Difference]: Start difference. First operand has 132285 states, 130884 states have (on average 6.126119311756976) internal successors, (801811), 132284 states have internal predecessors, (801811), 0 states have call successors, (0), 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), 3 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) [2022-11-02 20:57:02,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:57:02,574 INFO L93 Difference]: Finished difference Result 71873 states and 392717 transitions. [2022-11-02 20:57:02,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:57:02,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 [2022-11-02 20:57:02,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:57:03,346 INFO L225 Difference]: With dead ends: 71873 [2022-11-02 20:57:03,346 INFO L226 Difference]: Without dead ends: 71873 [2022-11-02 20:57:03,347 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 [2022-11-02 20:57:03,348 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 57 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:57:03,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 24 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:57:03,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71873 states. [2022-11-02 20:57:07,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71873 to 71873. [2022-11-02 20:57:07,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71873 states, 71681 states have (on average 5.478676357751706) internal successors, (392717), 71872 states have internal predecessors, (392717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:08,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71873 states to 71873 states and 392717 transitions. [2022-11-02 20:57:08,394 INFO L78 Accepts]: Start accepts. Automaton has 71873 states and 392717 transitions. Word has length 5 [2022-11-02 20:57:08,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:57:08,394 INFO L495 AbstractCegarLoop]: Abstraction has 71873 states and 392717 transitions. [2022-11-02 20:57:08,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2022-11-02 20:57:08,395 INFO L276 IsEmpty]: Start isEmpty. Operand 71873 states and 392717 transitions. [2022-11-02 20:57:08,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:57:08,395 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:57:08,395 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:57:08,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-02 20:57:08,396 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-02 20:57:08,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:08,397 INFO L85 PathProgramCache]: Analyzing trace with hash -2072704560, now seen corresponding path program 1 times [2022-11-02 20:57:08,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:08,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692440535] [2022-11-02 20:57:08,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:08,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:08,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:08,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:57:08,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:08,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692440535] [2022-11-02 20:57:08,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692440535] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:57:08,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:57:08,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:57:08,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438633536] [2022-11-02 20:57:08,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:57:08,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:57:08,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:08,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:57:08,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:57:08,496 INFO L87 Difference]: Start difference. First operand 71873 states and 392717 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2022-11-02 20:57:10,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:57:10,558 INFO L93 Difference]: Finished difference Result 86247 states and 468385 transitions. [2022-11-02 20:57:10,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:57:10,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 [2022-11-02 20:57:10,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:57:11,415 INFO L225 Difference]: With dead ends: 86247 [2022-11-02 20:57:11,415 INFO L226 Difference]: Without dead ends: 86247 [2022-11-02 20:57:11,415 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 [2022-11-02 20:57:11,416 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 47 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:57:11,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 24 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:57:11,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86247 states. [2022-11-02 20:57:14,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86247 to 79060. [2022-11-02 20:57:14,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79060 states, 78868 states have (on average 5.5502611959223005) internal successors, (437738), 79059 states have internal predecessors, (437738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:16,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79060 states to 79060 states and 437738 transitions. [2022-11-02 20:57:16,474 INFO L78 Accepts]: Start accepts. Automaton has 79060 states and 437738 transitions. Word has length 5 [2022-11-02 20:57:16,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:57:16,474 INFO L495 AbstractCegarLoop]: Abstraction has 79060 states and 437738 transitions. [2022-11-02 20:57:16,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2022-11-02 20:57:16,474 INFO L276 IsEmpty]: Start isEmpty. Operand 79060 states and 437738 transitions. [2022-11-02 20:57:16,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:57:16,475 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:57:16,475 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:57:16,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-02 20:57:16,475 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-02 20:57:16,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:16,476 INFO L85 PathProgramCache]: Analyzing trace with hash -2072705022, now seen corresponding path program 1 times [2022-11-02 20:57:16,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:16,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168015152] [2022-11-02 20:57:16,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:16,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:16,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:16,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:57:16,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:16,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168015152] [2022-11-02 20:57:16,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168015152] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:57:16,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:57:16,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:57:16,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347458409] [2022-11-02 20:57:16,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:57:16,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:57:16,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:16,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:57:16,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:57:16,552 INFO L87 Difference]: Start difference. First operand 79060 states and 437738 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2022-11-02 20:57:18,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:57:18,890 INFO L93 Difference]: Finished difference Result 71873 states and 392717 transitions. [2022-11-02 20:57:18,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:57:18,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 [2022-11-02 20:57:18,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:57:19,536 INFO L225 Difference]: With dead ends: 71873 [2022-11-02 20:57:19,536 INFO L226 Difference]: Without dead ends: 71873 [2022-11-02 20:57:19,537 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 [2022-11-02 20:57:19,537 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 56 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:57:19,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 24 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:57:19,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71873 states. [2022-11-02 20:57:22,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71873 to 71873. [2022-11-02 20:57:22,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71873 states, 71745 states have (on average 5.473789114223988) internal successors, (392717), 71872 states have internal predecessors, (392717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:23,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71873 states to 71873 states and 392717 transitions. [2022-11-02 20:57:23,375 INFO L78 Accepts]: Start accepts. Automaton has 71873 states and 392717 transitions. Word has length 5 [2022-11-02 20:57:23,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:57:23,375 INFO L495 AbstractCegarLoop]: Abstraction has 71873 states and 392717 transitions. [2022-11-02 20:57:23,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2022-11-02 20:57:23,375 INFO L276 IsEmpty]: Start isEmpty. Operand 71873 states and 392717 transitions. [2022-11-02 20:57:23,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-02 20:57:23,376 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:57:23,376 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-02 20:57:23,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-02 20:57:23,376 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-02 20:57:23,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:23,377 INFO L85 PathProgramCache]: Analyzing trace with hash 170670427, now seen corresponding path program 1 times [2022-11-02 20:57:23,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:23,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189612744] [2022-11-02 20:57:23,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:23,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:23,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:23,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:57:23,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:23,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189612744] [2022-11-02 20:57:23,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189612744] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:57:23,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:57:23,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:57:23,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154089420] [2022-11-02 20:57:23,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:57:23,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:57:23,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:23,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:57:23,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:57:23,426 INFO L87 Difference]: Start difference. First operand 71873 states and 392717 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:25,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:57:25,373 INFO L93 Difference]: Finished difference Result 64686 states and 354883 transitions. [2022-11-02 20:57:25,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:57:25,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2022-11-02 20:57:25,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:57:25,988 INFO L225 Difference]: With dead ends: 64686 [2022-11-02 20:57:25,988 INFO L226 Difference]: Without dead ends: 64686 [2022-11-02 20:57:25,988 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 [2022-11-02 20:57:25,989 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 54 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:57:25,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 24 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:57:26,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64686 states. [2022-11-02 20:57:29,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64686 to 64686. [2022-11-02 20:57:29,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64686 states, 64622 states have (on average 5.4916746618798555) internal successors, (354883), 64685 states have internal predecessors, (354883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:30,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64686 states to 64686 states and 354883 transitions. [2022-11-02 20:57:30,112 INFO L78 Accepts]: Start accepts. Automaton has 64686 states and 354883 transitions. Word has length 6 [2022-11-02 20:57:30,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:57:30,112 INFO L495 AbstractCegarLoop]: Abstraction has 64686 states and 354883 transitions. [2022-11-02 20:57:30,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:30,112 INFO L276 IsEmpty]: Start isEmpty. Operand 64686 states and 354883 transitions. [2022-11-02 20:57:30,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:57:30,113 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:57:30,113 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:30,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-02 20:57:30,113 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-02 20:57:30,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:30,114 INFO L85 PathProgramCache]: Analyzing trace with hash -746127499, now seen corresponding path program 1 times [2022-11-02 20:57:30,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:30,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866135729] [2022-11-02 20:57:30,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:30,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:30,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:30,182 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:57:30,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:30,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866135729] [2022-11-02 20:57:30,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866135729] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:57:30,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:57:30,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:57:30,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047132387] [2022-11-02 20:57:30,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:57:30,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:57:30,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:30,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:57:30,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:57:30,185 INFO L87 Difference]: Start difference. First operand 64686 states and 354883 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:31,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:57:31,964 INFO L93 Difference]: Finished difference Result 58809 states and 323697 transitions. [2022-11-02 20:57:31,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:57:31,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 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 [2022-11-02 20:57:31,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:57:32,474 INFO L225 Difference]: With dead ends: 58809 [2022-11-02 20:57:32,475 INFO L226 Difference]: Without dead ends: 58809 [2022-11-02 20:57:32,475 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 [2022-11-02 20:57:32,476 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 53 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:57:32,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 19 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:57:32,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58809 states. [2022-11-02 20:57:34,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58809 to 58809.