./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/systemc/pc_sfifo_3.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 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_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/pc_sfifo_3.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 677126e8d6773c92cc337bfe0a3ec155f49f784424155f33a8c9c24ee0a42113 --- 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-b5237d8 [2022-11-22 02:21:45,777 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:21:45,779 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:21:45,813 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:21:45,813 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:21:45,817 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:21:45,822 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:21:45,825 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:21:45,827 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:21:45,833 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:21:45,834 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:21:45,836 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:21:45,837 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:21:45,840 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:21:45,842 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:21:45,844 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:21:45,845 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:21:45,846 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:21:45,849 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:21:45,851 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:21:45,852 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:21:45,854 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:21:45,855 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:21:45,856 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:21:45,859 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:21:45,860 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:21:45,860 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:21:45,861 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:21:45,861 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:21:45,862 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:21:45,863 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:21:45,863 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:21:45,864 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:21:45,865 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:21:45,872 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:21:45,874 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:21:45,874 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:21:45,875 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:21:45,875 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:21:45,877 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:21:45,878 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:21:45,879 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-22 02:21:45,928 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:21:45,929 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:21:45,929 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:21:45,930 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:21:45,930 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:21:45,931 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:21:45,931 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:21:45,931 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:21:45,931 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:21:45,932 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:21:45,933 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:21:45,933 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:21:45,933 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:21:45,933 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:21:45,934 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:21:45,934 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:21:45,934 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:21:45,934 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:21:45,935 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:21:45,935 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 02:21:45,935 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 02:21:45,936 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:21:45,936 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 02:21:45,936 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:21:45,936 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:21:45,936 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:21:45,937 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:21:45,937 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-22 02:21:45,937 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 02:21:45,938 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:21:45,938 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:21:45,938 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:21:45,940 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:21:45,940 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:21:45,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:21:45,940 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:21:45,941 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:21:45,941 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:21:45,941 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:21:45,941 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:21:45,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:21:45,942 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:21:45,942 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:21:45,942 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_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 677126e8d6773c92cc337bfe0a3ec155f49f784424155f33a8c9c24ee0a42113 [2022-11-22 02:21:46,264 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:21:46,297 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:21:46,300 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:21:46,301 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:21:46,301 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:21:46,303 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/systemc/pc_sfifo_3.cil.c [2022-11-22 02:21:49,529 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:21:49,741 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:21:49,742 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/sv-benchmarks/c/systemc/pc_sfifo_3.cil.c [2022-11-22 02:21:49,750 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/data/146b19156/f2a565b5bf71409399c22d9dcb323083/FLAGf7523bcc2 [2022-11-22 02:21:49,765 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/data/146b19156/f2a565b5bf71409399c22d9dcb323083 [2022-11-22 02:21:49,768 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:21:49,769 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:21:49,771 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:21:49,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:21:49,775 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:21:49,776 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:21:49" (1/1) ... [2022-11-22 02:21:49,777 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b3dbd44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:21:49, skipping insertion in model container [2022-11-22 02:21:49,777 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:21:49" (1/1) ... [2022-11-22 02:21:49,785 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:21:49,811 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:21:49,954 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/sv-benchmarks/c/systemc/pc_sfifo_3.cil.c[640,653] [2022-11-22 02:21:50,010 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:21:50,021 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:21:50,030 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/sv-benchmarks/c/systemc/pc_sfifo_3.cil.c[640,653] [2022-11-22 02:21:50,061 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:21:50,086 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:21:50,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:21:50 WrapperNode [2022-11-22 02:21:50,087 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:21:50,088 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:21:50,088 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:21:50,088 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:21:50,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:21:50" (1/1) ... [2022-11-22 02:21:50,102 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:21:50" (1/1) ... [2022-11-22 02:21:50,125 INFO L138 Inliner]: procedures = 31, calls = 35, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 231 [2022-11-22 02:21:50,125 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:21:50,126 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:21:50,126 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:21:50,126 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:21:50,133 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:21:50" (1/1) ... [2022-11-22 02:21:50,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:21:50" (1/1) ... [2022-11-22 02:21:50,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:21:50" (1/1) ... [2022-11-22 02:21:50,137 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:21:50" (1/1) ... [2022-11-22 02:21:50,142 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:21:50" (1/1) ... [2022-11-22 02:21:50,147 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:21:50" (1/1) ... [2022-11-22 02:21:50,149 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:21:50" (1/1) ... [2022-11-22 02:21:50,150 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:21:50" (1/1) ... [2022-11-22 02:21:50,153 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:21:50,154 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:21:50,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:21:50,154 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:21:50,155 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:21:50" (1/1) ... [2022-11-22 02:21:50,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:21:50,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:21:50,191 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:21:50,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:21:50,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:21:50,237 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-11-22 02:21:50,238 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-11-22 02:21:50,238 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-11-22 02:21:50,238 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-11-22 02:21:50,238 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-22 02:21:50,238 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-22 02:21:50,239 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-22 02:21:50,239 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-22 02:21:50,239 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-22 02:21:50,239 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-22 02:21:50,239 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-22 02:21:50,240 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-22 02:21:50,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:21:50,240 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-22 02:21:50,240 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-22 02:21:50,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:21:50,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:21:50,241 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-11-22 02:21:50,241 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-11-22 02:21:50,314 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:21:50,317 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:21:50,655 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##54: assume !(1 == ~q_free~0); [2022-11-22 02:21:50,656 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##53: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2022-11-22 02:21:50,676 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:21:50,856 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:21:50,857 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-22 02:21:50,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:21:50 BoogieIcfgContainer [2022-11-22 02:21:50,860 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:21:50,862 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:21:50,862 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:21:50,865 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:21:50,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:21:49" (1/3) ... [2022-11-22 02:21:50,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2643fcb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:21:50, skipping insertion in model container [2022-11-22 02:21:50,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:21:50" (2/3) ... [2022-11-22 02:21:50,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2643fcb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:21:50, skipping insertion in model container [2022-11-22 02:21:50,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:21:50" (3/3) ... [2022-11-22 02:21:50,868 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil.c [2022-11-22 02:21:50,885 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:21:50,885 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-22 02:21:50,937 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:21:50,944 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;@7ff6b519, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:21:50,945 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-22 02:21:50,948 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 61 states have (on average 1.5245901639344261) internal successors, (93), 70 states have internal predecessors, (93), 16 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-22 02:21:50,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-22 02:21:50,956 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:21:50,957 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:21:50,958 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 02:21:50,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:21:50,963 INFO L85 PathProgramCache]: Analyzing trace with hash 2103512677, now seen corresponding path program 1 times [2022-11-22 02:21:50,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:21:50,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454715810] [2022-11-22 02:21:50,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:21:50,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:21:51,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:21:51,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:21:51,359 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:21:51,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454715810] [2022-11-22 02:21:51,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454715810] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:21:51,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:21:51,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:21:51,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893283498] [2022-11-22 02:21:51,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:21:51,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:21:51,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:21:51,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:21:51,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:21:51,398 INFO L87 Difference]: Start difference. First operand has 92 states, 61 states have (on average 1.5245901639344261) internal successors, (93), 70 states have internal predecessors, (93), 16 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 4 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-22 02:21:51,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:21:51,824 INFO L93 Difference]: Finished difference Result 333 states and 461 transitions. [2022-11-22 02:21:51,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:21:51,827 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 4 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 41 [2022-11-22 02:21:51,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:21:51,847 INFO L225 Difference]: With dead ends: 333 [2022-11-22 02:21:51,848 INFO L226 Difference]: Without dead ends: 231 [2022-11-22 02:21:51,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:21:51,858 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 191 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:21:51,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 342 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 02:21:51,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-11-22 02:21:51,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 216. [2022-11-22 02:21:51,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 155 states have (on average 1.3935483870967742) internal successors, (216), 161 states have internal predecessors, (216), 34 states have call successors, (34), 21 states have call predecessors, (34), 21 states have return successors, (37), 34 states have call predecessors, (37), 34 states have call successors, (37) [2022-11-22 02:21:51,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 287 transitions. [2022-11-22 02:21:51,967 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 287 transitions. Word has length 41 [2022-11-22 02:21:51,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:21:51,968 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 287 transitions. [2022-11-22 02:21:51,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 4 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-22 02:21:51,969 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 287 transitions. [2022-11-22 02:21:51,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-22 02:21:51,972 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:21:51,972 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:21:51,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:21:51,973 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 02:21:51,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:21:51,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1386688987, now seen corresponding path program 1 times [2022-11-22 02:21:51,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:21:51,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620812114] [2022-11-22 02:21:51,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:21:51,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:21:52,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:21:52,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:21:52,182 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:21:52,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620812114] [2022-11-22 02:21:52,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620812114] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:21:52,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:21:52,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 02:21:52,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356036494] [2022-11-22 02:21:52,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:21:52,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:21:52,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:21:52,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:21:52,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:21:52,186 INFO L87 Difference]: Start difference. First operand 216 states and 287 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-22 02:21:52,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:21:52,947 INFO L93 Difference]: Finished difference Result 823 states and 1089 transitions. [2022-11-22 02:21:52,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 02:21:52,953 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 42 [2022-11-22 02:21:52,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:21:52,961 INFO L225 Difference]: With dead ends: 823 [2022-11-22 02:21:52,961 INFO L226 Difference]: Without dead ends: 578 [2022-11-22 02:21:52,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-22 02:21:52,972 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 589 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:21:52,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [597 Valid, 741 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 02:21:52,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2022-11-22 02:21:53,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 482. [2022-11-22 02:21:53,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 345 states have (on average 1.3159420289855073) internal successors, (454), 352 states have internal predecessors, (454), 76 states have call successors, (76), 51 states have call predecessors, (76), 55 states have return successors, (84), 79 states have call predecessors, (84), 76 states have call successors, (84) [2022-11-22 02:21:53,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 614 transitions. [2022-11-22 02:21:53,068 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 614 transitions. Word has length 42 [2022-11-22 02:21:53,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:21:53,068 INFO L495 AbstractCegarLoop]: Abstraction has 482 states and 614 transitions. [2022-11-22 02:21:53,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-22 02:21:53,069 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 614 transitions. [2022-11-22 02:21:53,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-22 02:21:53,072 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:21:53,073 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:21:53,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:21:53,074 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 02:21:53,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:21:53,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1417503400, now seen corresponding path program 1 times [2022-11-22 02:21:53,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:21:53,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583534896] [2022-11-22 02:21:53,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:21:53,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:21:53,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:21:53,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:21:53,368 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:21:53,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583534896] [2022-11-22 02:21:53,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583534896] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:21:53,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:21:53,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-22 02:21:53,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144752982] [2022-11-22 02:21:53,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:21:53,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:21:53,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:21:53,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:21:53,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:21:53,373 INFO L87 Difference]: Start difference. First operand 482 states and 614 transitions. Second operand has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-22 02:21:53,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:21:53,874 INFO L93 Difference]: Finished difference Result 1329 states and 1689 transitions. [2022-11-22 02:21:53,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 02:21:53,874 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 43 [2022-11-22 02:21:53,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:21:53,881 INFO L225 Difference]: With dead ends: 1329 [2022-11-22 02:21:53,882 INFO L226 Difference]: Without dead ends: 853 [2022-11-22 02:21:53,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:21:53,892 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 254 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:21:53,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 337 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 02:21:53,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2022-11-22 02:21:53,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 789. [2022-11-22 02:21:53,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 563 states have (on average 1.3019538188277087) internal successors, (733), 572 states have internal predecessors, (733), 126 states have call successors, (126), 86 states have call predecessors, (126), 94 states have return successors, (142), 131 states have call predecessors, (142), 126 states have call successors, (142) [2022-11-22 02:21:53,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1001 transitions. [2022-11-22 02:21:53,991 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1001 transitions. Word has length 43 [2022-11-22 02:21:53,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:21:53,992 INFO L495 AbstractCegarLoop]: Abstraction has 789 states and 1001 transitions. [2022-11-22 02:21:53,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-22 02:21:53,992 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1001 transitions. [2022-11-22 02:21:53,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-22 02:21:53,993 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:21:53,994 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:21:53,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:21:53,994 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 02:21:53,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:21:53,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1883878625, now seen corresponding path program 1 times [2022-11-22 02:21:53,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:21:53,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356729050] [2022-11-22 02:21:53,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:21:53,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:21:54,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:21:54,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:21:54,036 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:21:54,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356729050] [2022-11-22 02:21:54,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356729050] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:21:54,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:21:54,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:21:54,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270829709] [2022-11-22 02:21:54,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:21:54,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:21:54,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:21:54,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:21:54,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:21:54,039 INFO L87 Difference]: Start difference. First operand 789 states and 1001 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-22 02:21:54,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:21:54,173 INFO L93 Difference]: Finished difference Result 1509 states and 1931 transitions. [2022-11-22 02:21:54,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:21:54,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 44 [2022-11-22 02:21:54,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:21:54,178 INFO L225 Difference]: With dead ends: 1509 [2022-11-22 02:21:54,178 INFO L226 Difference]: Without dead ends: 725 [2022-11-22 02:21:54,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:21:54,181 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 83 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:21:54,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 190 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:21:54,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2022-11-22 02:21:54,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 605. [2022-11-22 02:21:54,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 427 states have (on average 1.2505854800936769) internal successors, (534), 431 states have internal predecessors, (534), 104 states have call successors, (104), 70 states have call predecessors, (104), 70 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2022-11-22 02:21:54,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 742 transitions. [2022-11-22 02:21:54,308 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 742 transitions. Word has length 44 [2022-11-22 02:21:54,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:21:54,308 INFO L495 AbstractCegarLoop]: Abstraction has 605 states and 742 transitions. [2022-11-22 02:21:54,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-22 02:21:54,309 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 742 transitions. [2022-11-22 02:21:54,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-22 02:21:54,311 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:21:54,311 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:21:54,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 02:21:54,312 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 02:21:54,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:21:54,313 INFO L85 PathProgramCache]: Analyzing trace with hash -621296856, now seen corresponding path program 1 times [2022-11-22 02:21:54,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:21:54,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102006107] [2022-11-22 02:21:54,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:21:54,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:21:54,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:21:54,534 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 02:21:54,535 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:21:54,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102006107] [2022-11-22 02:21:54,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102006107] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:21:54,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:21:54,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-22 02:21:54,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906998632] [2022-11-22 02:21:54,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:21:54,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:21:54,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:21:54,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:21:54,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:21:54,547 INFO L87 Difference]: Start difference. First operand 605 states and 742 transitions. Second operand has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-22 02:21:55,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:21:55,044 INFO L93 Difference]: Finished difference Result 1528 states and 1865 transitions. [2022-11-22 02:21:55,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 02:21:55,045 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 56 [2022-11-22 02:21:55,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:21:55,051 INFO L225 Difference]: With dead ends: 1528 [2022-11-22 02:21:55,051 INFO L226 Difference]: Without dead ends: 929 [2022-11-22 02:21:55,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:21:55,054 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 236 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:21:55,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 347 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 02:21:55,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2022-11-22 02:21:55,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 890. [2022-11-22 02:21:55,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 890 states, 627 states have (on average 1.2360446570972887) internal successors, (775), 631 states have internal predecessors, (775), 154 states have call successors, (154), 105 states have call predecessors, (154), 105 states have return successors, (154), 154 states have call predecessors, (154), 154 states have call successors, (154) [2022-11-22 02:21:55,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1083 transitions. [2022-11-22 02:21:55,169 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1083 transitions. Word has length 56 [2022-11-22 02:21:55,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:21:55,170 INFO L495 AbstractCegarLoop]: Abstraction has 890 states and 1083 transitions. [2022-11-22 02:21:55,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-22 02:21:55,170 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1083 transitions. [2022-11-22 02:21:55,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-22 02:21:55,176 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:21:55,177 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:21:55,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 02:21:55,177 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 02:21:55,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:21:55,178 INFO L85 PathProgramCache]: Analyzing trace with hash 2141230225, now seen corresponding path program 1 times [2022-11-22 02:21:55,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:21:55,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599510833] [2022-11-22 02:21:55,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:21:55,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:21:55,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:21:55,259 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 02:21:55,260 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:21:55,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599510833] [2022-11-22 02:21:55,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599510833] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:21:55,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:21:55,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:21:55,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742506036] [2022-11-22 02:21:55,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:21:55,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:21:55,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:21:55,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:21:55,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:21:55,262 INFO L87 Difference]: Start difference. First operand 890 states and 1083 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-22 02:21:55,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:21:55,602 INFO L93 Difference]: Finished difference Result 2196 states and 2709 transitions. [2022-11-22 02:21:55,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 02:21:55,603 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 57 [2022-11-22 02:21:55,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:21:55,610 INFO L225 Difference]: With dead ends: 2196 [2022-11-22 02:21:55,611 INFO L226 Difference]: Without dead ends: 1482 [2022-11-22 02:21:55,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:21:55,614 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 260 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:21:55,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 382 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:21:55,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2022-11-22 02:21:55,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 1293. [2022-11-22 02:21:55,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1293 states, 910 states have (on average 1.2263736263736265) internal successors, (1116), 914 states have internal predecessors, (1116), 223 states have call successors, (223), 156 states have call predecessors, (223), 156 states have return successors, (241), 223 states have call predecessors, (241), 223 states have call successors, (241) [2022-11-22 02:21:55,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 1580 transitions. [2022-11-22 02:21:55,801 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 1580 transitions. Word has length 57 [2022-11-22 02:21:55,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:21:55,802 INFO L495 AbstractCegarLoop]: Abstraction has 1293 states and 1580 transitions. [2022-11-22 02:21:55,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-22 02:21:55,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 1580 transitions. [2022-11-22 02:21:55,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-22 02:21:55,803 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:21:55,803 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:21:55,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 02:21:55,804 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 02:21:55,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:21:55,805 INFO L85 PathProgramCache]: Analyzing trace with hash -194522902, now seen corresponding path program 1 times [2022-11-22 02:21:55,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:21:55,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267361988] [2022-11-22 02:21:55,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:21:55,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:21:55,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:21:56,132 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-22 02:21:56,133 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:21:56,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267361988] [2022-11-22 02:21:56,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267361988] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:21:56,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143337225] [2022-11-22 02:21:56,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:21:56,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:21:56,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:21:56,138 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:21:56,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 02:21:56,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:21:56,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 02:21:56,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:21:56,513 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-22 02:21:56,514 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:21:56,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143337225] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:21:56,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:21:56,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [14] total 15 [2022-11-22 02:21:56,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291810513] [2022-11-22 02:21:56,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:21:56,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:21:56,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:21:56,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:21:56,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-22 02:21:56,516 INFO L87 Difference]: Start difference. First operand 1293 states and 1580 transitions. Second operand has 3 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-22 02:21:56,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:21:56,843 INFO L93 Difference]: Finished difference Result 3822 states and 4636 transitions. [2022-11-22 02:21:56,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:21:56,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 74 [2022-11-22 02:21:56,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:21:56,859 INFO L225 Difference]: With dead ends: 3822 [2022-11-22 02:21:56,860 INFO L226 Difference]: Without dead ends: 2535 [2022-11-22 02:21:56,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-22 02:21:56,867 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 49 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:21:56,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 184 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:21:56,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2535 states. [2022-11-22 02:21:57,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2535 to 2533. [2022-11-22 02:21:57,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2533 states, 1776 states have (on average 1.1846846846846846) internal successors, (2104), 1779 states have internal predecessors, (2104), 442 states have call successors, (442), 312 states have call predecessors, (442), 312 states have return successors, (478), 442 states have call predecessors, (478), 442 states have call successors, (478) [2022-11-22 02:21:57,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2533 states to 2533 states and 3024 transitions. [2022-11-22 02:21:57,186 INFO L78 Accepts]: Start accepts. Automaton has 2533 states and 3024 transitions. Word has length 74 [2022-11-22 02:21:57,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:21:57,188 INFO L495 AbstractCegarLoop]: Abstraction has 2533 states and 3024 transitions. [2022-11-22 02:21:57,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-22 02:21:57,190 INFO L276 IsEmpty]: Start isEmpty. Operand 2533 states and 3024 transitions. [2022-11-22 02:21:57,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-22 02:21:57,191 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:21:57,192 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:21:57,206 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-22 02:21:57,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-22 02:21:57,398 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 02:21:57,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:21:57,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1735242335, now seen corresponding path program 1 times [2022-11-22 02:21:57,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:21:57,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844673922] [2022-11-22 02:21:57,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:21:57,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:21:57,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:21:57,824 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-22 02:21:57,825 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:21:57,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844673922] [2022-11-22 02:21:57,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844673922] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:21:57,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694384116] [2022-11-22 02:21:57,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:21:57,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:21:57,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:21:57,827 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:21:57,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 02:21:57,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:21:57,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 02:21:57,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:21:58,114 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-22 02:21:58,114 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:21:58,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694384116] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:21:58,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:21:58,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [14] total 15 [2022-11-22 02:21:58,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636689943] [2022-11-22 02:21:58,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:21:58,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:21:58,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:21:58,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:21:58,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-22 02:21:58,117 INFO L87 Difference]: Start difference. First operand 2533 states and 3024 transitions. Second operand has 3 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-22 02:21:58,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:21:58,422 INFO L93 Difference]: Finished difference Result 2533 states and 3024 transitions. [2022-11-22 02:21:58,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:21:58,423 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 75 [2022-11-22 02:21:58,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:21:58,435 INFO L225 Difference]: With dead ends: 2533 [2022-11-22 02:21:58,435 INFO L226 Difference]: Without dead ends: 2532 [2022-11-22 02:21:58,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-22 02:21:58,437 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 47 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:21:58,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 83 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:21:58,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2532 states. [2022-11-22 02:21:58,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2532 to 2532. [2022-11-22 02:21:58,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2532 states, 1776 states have (on average 1.1728603603603605) internal successors, (2083), 1778 states have internal predecessors, (2083), 442 states have call successors, (442), 312 states have call predecessors, (442), 312 states have return successors, (478), 442 states have call predecessors, (478), 442 states have call successors, (478) [2022-11-22 02:21:58,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2532 states to 2532 states and 3003 transitions. [2022-11-22 02:21:58,769 INFO L78 Accepts]: Start accepts. Automaton has 2532 states and 3003 transitions. Word has length 75 [2022-11-22 02:21:58,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:21:58,770 INFO L495 AbstractCegarLoop]: Abstraction has 2532 states and 3003 transitions. [2022-11-22 02:21:58,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-22 02:21:58,770 INFO L276 IsEmpty]: Start isEmpty. Operand 2532 states and 3003 transitions. [2022-11-22 02:21:58,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-22 02:21:58,780 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:21:58,780 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:21:58,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 02:21:58,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-22 02:21:58,986 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 02:21:58,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:21:58,986 INFO L85 PathProgramCache]: Analyzing trace with hash 145280184, now seen corresponding path program 1 times [2022-11-22 02:21:58,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:21:58,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028871042] [2022-11-22 02:21:58,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:21:58,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:21:59,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:21:59,241 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 17 proven. 9 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-22 02:21:59,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:21:59,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028871042] [2022-11-22 02:21:59,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028871042] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:21:59,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696450431] [2022-11-22 02:21:59,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:21:59,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:21:59,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:21:59,244 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:21:59,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 02:21:59,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:21:59,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 02:21:59,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:21:59,524 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-22 02:21:59,524 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:21:59,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696450431] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:21:59,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:21:59,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [10] total 11 [2022-11-22 02:21:59,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275796244] [2022-11-22 02:21:59,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:21:59,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:21:59,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:21:59,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:21:59,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-22 02:21:59,528 INFO L87 Difference]: Start difference. First operand 2532 states and 3003 transitions. Second operand has 3 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-22 02:22:00,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:22:00,030 INFO L93 Difference]: Finished difference Result 4723 states and 5613 transitions. [2022-11-22 02:22:00,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:22:00,031 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 104 [2022-11-22 02:22:00,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:22:00,049 INFO L225 Difference]: With dead ends: 4723 [2022-11-22 02:22:00,049 INFO L226 Difference]: Without dead ends: 4722 [2022-11-22 02:22:00,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-22 02:22:00,054 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 30 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:22:00,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 169 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:22:00,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4722 states. [2022-11-22 02:22:00,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4722 to 4716. [2022-11-22 02:22:00,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4716 states, 3312 states have (on average 1.1724033816425121) internal successors, (3883), 3314 states have internal predecessors, (3883), 820 states have call successors, (820), 582 states have call predecessors, (820), 582 states have return successors, (892), 820 states have call predecessors, (892), 820 states have call successors, (892) [2022-11-22 02:22:00,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4716 states to 4716 states and 5595 transitions. [2022-11-22 02:22:00,615 INFO L78 Accepts]: Start accepts. Automaton has 4716 states and 5595 transitions. Word has length 104 [2022-11-22 02:22:00,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:22:00,615 INFO L495 AbstractCegarLoop]: Abstraction has 4716 states and 5595 transitions. [2022-11-22 02:22:00,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-22 02:22:00,616 INFO L276 IsEmpty]: Start isEmpty. Operand 4716 states and 5595 transitions. [2022-11-22 02:22:00,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-22 02:22:00,618 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:22:00,618 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:22:00,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 02:22:00,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:22:00,824 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 02:22:00,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:22:00,825 INFO L85 PathProgramCache]: Analyzing trace with hash 208718642, now seen corresponding path program 1 times [2022-11-22 02:22:00,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:22:00,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76678531] [2022-11-22 02:22:00,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:22:00,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:22:00,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:22:01,082 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 17 proven. 9 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-22 02:22:01,083 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:22:01,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76678531] [2022-11-22 02:22:01,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76678531] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:22:01,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428335987] [2022-11-22 02:22:01,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:22:01,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:22:01,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:22:01,085 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:22:01,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 02:22:01,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:22:01,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 02:22:01,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:22:01,357 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-22 02:22:01,357 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:22:01,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428335987] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:22:01,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:22:01,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [10] total 11 [2022-11-22 02:22:01,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945143407] [2022-11-22 02:22:01,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:22:01,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:22:01,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:22:01,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:22:01,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-22 02:22:01,360 INFO L87 Difference]: Start difference. First operand 4716 states and 5595 transitions. Second operand has 3 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-22 02:22:01,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:22:01,841 INFO L93 Difference]: Finished difference Result 4716 states and 5595 transitions. [2022-11-22 02:22:01,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:22:01,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 105 [2022-11-22 02:22:01,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:22:01,864 INFO L225 Difference]: With dead ends: 4716 [2022-11-22 02:22:01,864 INFO L226 Difference]: Without dead ends: 4715 [2022-11-22 02:22:01,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-22 02:22:01,867 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 29 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 83 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 [2022-11-22 02:22:01,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 83 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:22:01,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4715 states. [2022-11-22 02:22:02,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4715 to 4715. [2022-11-22 02:22:02,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4715 states, 3312 states have (on average 1.1705917874396135) internal successors, (3877), 3313 states have internal predecessors, (3877), 820 states have call successors, (820), 582 states have call predecessors, (820), 582 states have return successors, (892), 820 states have call predecessors, (892), 820 states have call successors, (892) [2022-11-22 02:22:02,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4715 states to 4715 states and 5589 transitions. [2022-11-22 02:22:02,530 INFO L78 Accepts]: Start accepts. Automaton has 4715 states and 5589 transitions. Word has length 105 [2022-11-22 02:22:02,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:22:02,531 INFO L495 AbstractCegarLoop]: Abstraction has 4715 states and 5589 transitions. [2022-11-22 02:22:02,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-22 02:22:02,532 INFO L276 IsEmpty]: Start isEmpty. Operand 4715 states and 5589 transitions. [2022-11-22 02:22:02,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-11-22 02:22:02,540 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:22:02,541 INFO L195 NwaCegarLoop]: trace histogram [9, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:22:02,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 02:22:02,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-22 02:22:02,747 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 02:22:02,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:22:02,747 INFO L85 PathProgramCache]: Analyzing trace with hash -534138901, now seen corresponding path program 1 times [2022-11-22 02:22:02,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:22:02,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894843408] [2022-11-22 02:22:02,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:22:02,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:22:02,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:22:02,849 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 46 proven. 6 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-11-22 02:22:02,849 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:22:02,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894843408] [2022-11-22 02:22:02,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894843408] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:22:02,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276385733] [2022-11-22 02:22:02,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:22:02,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:22:02,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:22:02,851 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:22:02,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 02:22:02,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:22:03,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 02:22:03,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:22:03,130 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-11-22 02:22:03,130 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:22:03,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276385733] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:22:03,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:22:03,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-11-22 02:22:03,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875724573] [2022-11-22 02:22:03,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:22:03,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:22:03,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:22:03,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:22:03,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:22:03,133 INFO L87 Difference]: Start difference. First operand 4715 states and 5589 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-22 02:22:04,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:22:04,008 INFO L93 Difference]: Finished difference Result 12464 states and 14908 transitions. [2022-11-22 02:22:04,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:22:04,009 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 168 [2022-11-22 02:22:04,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:22:04,050 INFO L225 Difference]: With dead ends: 12464 [2022-11-22 02:22:04,050 INFO L226 Difference]: Without dead ends: 9307 [2022-11-22 02:22:04,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:22:04,060 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 41 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:22:04,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 174 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:22:04,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9307 states. [2022-11-22 02:22:05,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9307 to 9306. [2022-11-22 02:22:05,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9306 states, 6544 states have (on average 1.1647310513447433) internal successors, (7622), 6545 states have internal predecessors, (7622), 1597 states have call successors, (1597), 1164 states have call predecessors, (1597), 1164 states have return successors, (1729), 1597 states have call predecessors, (1729), 1597 states have call successors, (1729) [2022-11-22 02:22:05,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9306 states to 9306 states and 10948 transitions. [2022-11-22 02:22:05,380 INFO L78 Accepts]: Start accepts. Automaton has 9306 states and 10948 transitions. Word has length 168 [2022-11-22 02:22:05,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:22:05,381 INFO L495 AbstractCegarLoop]: Abstraction has 9306 states and 10948 transitions. [2022-11-22 02:22:05,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-22 02:22:05,381 INFO L276 IsEmpty]: Start isEmpty. Operand 9306 states and 10948 transitions. [2022-11-22 02:22:05,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-22 02:22:05,389 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:22:05,389 INFO L195 NwaCegarLoop]: trace histogram [9, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:22:05,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-22 02:22:05,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:22:05,596 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 02:22:05,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:22:05,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1560959308, now seen corresponding path program 1 times [2022-11-22 02:22:05,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:22:05,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552273405] [2022-11-22 02:22:05,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:22:05,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:22:05,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:22:05,931 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 41 proven. 19 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-11-22 02:22:05,931 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:22:05,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552273405] [2022-11-22 02:22:05,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552273405] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:22:05,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904067177] [2022-11-22 02:22:05,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:22:05,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:22:05,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:22:05,934 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:22:05,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-22 02:22:06,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:22:06,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 02:22:06,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:22:06,208 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-11-22 02:22:06,208 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:22:06,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904067177] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:22:06,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:22:06,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [10] total 11 [2022-11-22 02:22:06,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525372126] [2022-11-22 02:22:06,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:22:06,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:22:06,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:22:06,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:22:06,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-22 02:22:06,212 INFO L87 Difference]: Start difference. First operand 9306 states and 10948 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-22 02:22:07,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:22:07,139 INFO L93 Difference]: Finished difference Result 17948 states and 21160 transitions. [2022-11-22 02:22:07,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:22:07,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 169 [2022-11-22 02:22:07,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:22:07,200 INFO L225 Difference]: With dead ends: 17948 [2022-11-22 02:22:07,201 INFO L226 Difference]: Without dead ends: 9307 [2022-11-22 02:22:07,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-22 02:22:07,221 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 38 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:22:07,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 183 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:22:07,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9307 states. [2022-11-22 02:22:08,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9307 to 9306. [2022-11-22 02:22:08,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9306 states, 6544 states have (on average 1.1628973105134475) internal successors, (7610), 6545 states have internal predecessors, (7610), 1597 states have call successors, (1597), 1164 states have call predecessors, (1597), 1164 states have return successors, (1729), 1597 states have call predecessors, (1729), 1597 states have call successors, (1729) [2022-11-22 02:22:08,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9306 states to 9306 states and 10936 transitions. [2022-11-22 02:22:08,435 INFO L78 Accepts]: Start accepts. Automaton has 9306 states and 10936 transitions. Word has length 169 [2022-11-22 02:22:08,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:22:08,436 INFO L495 AbstractCegarLoop]: Abstraction has 9306 states and 10936 transitions. [2022-11-22 02:22:08,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-22 02:22:08,437 INFO L276 IsEmpty]: Start isEmpty. Operand 9306 states and 10936 transitions. [2022-11-22 02:22:08,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-11-22 02:22:08,448 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:22:08,448 INFO L195 NwaCegarLoop]: trace histogram [9, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:22:08,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-22 02:22:08,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:22:08,655 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 02:22:08,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:22:08,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1736688180, now seen corresponding path program 1 times [2022-11-22 02:22:08,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:22:08,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445318736] [2022-11-22 02:22:08,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:22:08,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:22:08,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:22:09,039 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 41 proven. 23 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-11-22 02:22:09,040 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:22:09,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445318736] [2022-11-22 02:22:09,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445318736] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:22:09,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180154979] [2022-11-22 02:22:09,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:22:09,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:22:09,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:22:09,042 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:22:09,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-22 02:22:09,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:22:09,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 02:22:09,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:22:09,308 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-22 02:22:09,309 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:22:09,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180154979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:22:09,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:22:09,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-11-22 02:22:09,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634981602] [2022-11-22 02:22:09,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:22:09,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:22:09,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:22:09,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:22:09,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-22 02:22:09,312 INFO L87 Difference]: Start difference. First operand 9306 states and 10936 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-22 02:22:10,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:22:10,636 INFO L93 Difference]: Finished difference Result 15143 states and 17770 transitions. [2022-11-22 02:22:10,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:22:10,636 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 173 [2022-11-22 02:22:10,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:22:10,687 INFO L225 Difference]: With dead ends: 15143 [2022-11-22 02:22:10,687 INFO L226 Difference]: Without dead ends: 10792 [2022-11-22 02:22:10,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-22 02:22:10,703 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 32 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:22:10,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 229 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:22:10,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10792 states. [2022-11-22 02:22:11,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10792 to 10756. [2022-11-22 02:22:11,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10756 states, 7568 states have (on average 1.1585623678646935) internal successors, (8768), 7569 states have internal predecessors, (8768), 1843 states have call successors, (1843), 1344 states have call predecessors, (1843), 1344 states have return successors, (1975), 1843 states have call predecessors, (1975), 1843 states have call successors, (1975) [2022-11-22 02:22:11,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10756 states to 10756 states and 12586 transitions. [2022-11-22 02:22:11,996 INFO L78 Accepts]: Start accepts. Automaton has 10756 states and 12586 transitions. Word has length 173 [2022-11-22 02:22:11,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:22:11,999 INFO L495 AbstractCegarLoop]: Abstraction has 10756 states and 12586 transitions. [2022-11-22 02:22:11,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-22 02:22:11,999 INFO L276 IsEmpty]: Start isEmpty. Operand 10756 states and 12586 transitions. [2022-11-22 02:22:12,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-11-22 02:22:12,027 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:22:12,028 INFO L195 NwaCegarLoop]: trace histogram [13, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:22:12,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-22 02:22:12,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-22 02:22:12,236 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 02:22:12,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:22:12,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1348847272, now seen corresponding path program 1 times [2022-11-22 02:22:12,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:22:12,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754347699] [2022-11-22 02:22:12,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:22:12,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:22:12,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:22:12,747 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 64 proven. 34 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2022-11-22 02:22:12,748 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:22:12,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754347699] [2022-11-22 02:22:12,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754347699] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:22:12,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64030573] [2022-11-22 02:22:12,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:22:12,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:22:12,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:22:12,750 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:22:12,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-22 02:22:12,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:22:12,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 02:22:12,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:22:13,383 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 0 proven. 277 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-22 02:22:13,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:22:13,717 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 359 trivial. 0 not checked. [2022-11-22 02:22:13,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64030573] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:22:13,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2111811336] [2022-11-22 02:22:13,745 INFO L159 IcfgInterpreter]: Started Sifa with 66 locations of interest [2022-11-22 02:22:13,746 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:22:13,762 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:22:13,769 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:22:13,770 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:22:30,301 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 65 for LOIs [2022-11-22 02:22:30,321 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 65 for LOIs [2022-11-22 02:22:30,340 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 76 for LOIs [2022-11-22 02:22:30,361 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 34 for LOIs [2022-11-22 02:22:30,368 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 65 for LOIs [2022-11-22 02:22:30,678 INFO L197 IcfgInterpreter]: Interpreting procedure is_do_write_p_triggered with input of size 65 for LOIs [2022-11-22 02:22:30,812 INFO L197 IcfgInterpreter]: Interpreting procedure is_do_read_c_triggered with input of size 65 for LOIs [2022-11-22 02:22:30,893 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:22:43,233 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '174842#(and (not (<= ~p_num_write~0 2147483646)) (<= ~q_buf_0~0 2147483647) (= ~p_last_write~0 ~q_buf_0~0) (<= 0 (+ ~q_buf_0~0 2147483648)) (or (and (not (= |ULTIMATE.start_eval_~tmp~2#1| 0)) (= ~c_num_read~0 0) (<= 0 |ULTIMATE.start_stop_simulation_~__retres2~0#1|) (= |ULTIMATE.start_start_simulation_~tmp___0~3#1| 0) (<= |ULTIMATE.start_stop_simulation_~__retres2~0#1| 0) (<= |ULTIMATE.start_eval_~tmp~2#1| 2147483647) (= ~c_last_read~0 0) (= 1 ~c_dr_i~0) (= |ULTIMATE.start_start_simulation_~kernel_st~0#1| 1) (<= |ULTIMATE.start_stop_simulation_~tmp~3#1| 1) (<= 0 |ULTIMATE.start_stop_simulation_#res#1|) (<= |ULTIMATE.start_stop_simulation_#res#1| 0) (= 2 ~p_dw_pc~0) (= ~slow_clk_edge~0 2) (<= 0 |ULTIMATE.start_stop_simulation_~tmp~3#1|) (<= |ULTIMATE.start_eval_~tmp___1~0#1| 1) (= ~t~0 0) (not (= |ULTIMATE.start_eval_~tmp___1~0#1| 0)) (= ~p_dw_st~0 1) (<= ~q_free~0 1) (<= |ULTIMATE.start_start_simulation_~tmp~4#1| 1) (= ~c_dr_pc~0 0) (= ~p_dw_i~0 1) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_eval_~tmp___1~0#1|) (= 2 ~fast_clk_edge~0) (= ~a_t~0 0) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_start_simulation_~tmp~4#1|) (= |#NULL.base| 0) (<= 0 (+ |ULTIMATE.start_eval_~tmp~2#1| 2147483648))) (and (not (= |ULTIMATE.start_eval_~tmp~2#1| 0)) (= ~c_num_read~0 0) (<= 0 |ULTIMATE.start_stop_simulation_~__retres2~0#1|) (= |ULTIMATE.start_start_simulation_~tmp___0~3#1| 0) (<= |ULTIMATE.start_stop_simulation_~__retres2~0#1| 0) (<= |ULTIMATE.start_eval_~tmp~2#1| 2147483647) (= ~c_last_read~0 0) (= 1 ~c_dr_i~0) (= |ULTIMATE.start_start_simulation_~kernel_st~0#1| 1) (<= |ULTIMATE.start_stop_simulation_~tmp~3#1| 1) (<= 0 |ULTIMATE.start_stop_simulation_#res#1|) (<= |ULTIMATE.start_stop_simulation_#res#1| 0) (= ~slow_clk_edge~0 2) (not (= ~q_free~0 0)) (<= 0 |ULTIMATE.start_stop_simulation_~tmp~3#1|) (<= |ULTIMATE.start_eval_~tmp___1~0#1| 1) (= ~t~0 0) (= ~p_dw_pc~0 1) (not (= |ULTIMATE.start_eval_~tmp___1~0#1| 0)) (= ~p_dw_st~0 1) (<= ~q_free~0 1) (<= |ULTIMATE.start_start_simulation_~tmp~4#1| 1) (= ~c_dr_pc~0 0) (= ~p_dw_i~0 1) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_eval_~tmp___1~0#1|) (= 2 ~fast_clk_edge~0) (= ~a_t~0 0) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_start_simulation_~tmp~4#1|) (= |#NULL.base| 0) (<= 0 (+ |ULTIMATE.start_eval_~tmp~2#1| 2147483648)))))' at error location [2022-11-22 02:22:43,233 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:22:43,234 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:22:43,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 3] total 14 [2022-11-22 02:22:43,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965052730] [2022-11-22 02:22:43,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:22:43,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-22 02:22:43,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:22:43,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-22 02:22:43,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=363, Invalid=3419, Unknown=0, NotChecked=0, Total=3782 [2022-11-22 02:22:43,238 INFO L87 Difference]: Start difference. First operand 10756 states and 12586 transitions. Second operand has 14 states, 13 states have (on average 16.615384615384617) internal successors, (216), 13 states have internal predecessors, (216), 9 states have call successors, (56), 3 states have call predecessors, (56), 5 states have return successors, (57), 9 states have call predecessors, (57), 9 states have call successors, (57) [2022-11-22 02:22:50,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:22:50,488 INFO L93 Difference]: Finished difference Result 24753 states and 29071 transitions. [2022-11-22 02:22:50,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2022-11-22 02:22:50,489 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 16.615384615384617) internal successors, (216), 13 states have internal predecessors, (216), 9 states have call successors, (56), 3 states have call predecessors, (56), 5 states have return successors, (57), 9 states have call predecessors, (57), 9 states have call successors, (57) Word has length 235 [2022-11-22 02:22:50,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:22:50,547 INFO L225 Difference]: With dead ends: 24753 [2022-11-22 02:22:50,547 INFO L226 Difference]: Without dead ends: 14686 [2022-11-22 02:22:50,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 977 GetRequests, 699 SyntacticMatches, 40 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28986 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=5205, Invalid=52155, Unknown=0, NotChecked=0, Total=57360 [2022-11-22 02:22:50,592 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 2224 mSDsluCounter, 2016 mSDsCounter, 0 mSdLazyCounter, 1941 mSolverCounterSat, 940 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2232 SdHoareTripleChecker+Valid, 2375 SdHoareTripleChecker+Invalid, 2881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 940 IncrementalHoareTripleChecker+Valid, 1941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:22:50,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2232 Valid, 2375 Invalid, 2881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [940 Valid, 1941 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-22 02:22:50,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14686 states. [2022-11-22 02:22:51,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14686 to 12918. [2022-11-22 02:22:51,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12918 states, 9232 states have (on average 1.1581455805892549) internal successors, (10692), 9233 states have internal predecessors, (10692), 2125 states have call successors, (2125), 1560 states have call predecessors, (2125), 1560 states have return successors, (2290), 2125 states have call predecessors, (2290), 2125 states have call successors, (2290) [2022-11-22 02:22:51,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12918 states to 12918 states and 15107 transitions. [2022-11-22 02:22:51,818 INFO L78 Accepts]: Start accepts. Automaton has 12918 states and 15107 transitions. Word has length 235 [2022-11-22 02:22:51,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:22:51,819 INFO L495 AbstractCegarLoop]: Abstraction has 12918 states and 15107 transitions. [2022-11-22 02:22:51,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 16.615384615384617) internal successors, (216), 13 states have internal predecessors, (216), 9 states have call successors, (56), 3 states have call predecessors, (56), 5 states have return successors, (57), 9 states have call predecessors, (57), 9 states have call successors, (57) [2022-11-22 02:22:51,819 INFO L276 IsEmpty]: Start isEmpty. Operand 12918 states and 15107 transitions. [2022-11-22 02:22:51,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 626 [2022-11-22 02:22:51,865 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:22:51,866 INFO L195 NwaCegarLoop]: trace histogram [37, 19, 19, 19, 19, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:22:51,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-22 02:22:52,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-22 02:22:52,078 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 02:22:52,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:22:52,078 INFO L85 PathProgramCache]: Analyzing trace with hash 2090792401, now seen corresponding path program 1 times [2022-11-22 02:22:52,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:22:52,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705921756] [2022-11-22 02:22:52,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:22:52,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:22:52,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:22:54,035 INFO L134 CoverageAnalysis]: Checked inductivity of 3926 backedges. 274 proven. 173 refuted. 0 times theorem prover too weak. 3479 trivial. 0 not checked. [2022-11-22 02:22:54,036 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:22:54,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705921756] [2022-11-22 02:22:54,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705921756] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:22:54,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306366191] [2022-11-22 02:22:54,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:22:54,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:22:54,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:22:54,038 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:22:54,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-22 02:22:54,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:22:54,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 1900 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-22 02:22:54,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:22:55,344 INFO L134 CoverageAnalysis]: Checked inductivity of 3926 backedges. 0 proven. 3370 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2022-11-22 02:22:55,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:22:56,171 INFO L134 CoverageAnalysis]: Checked inductivity of 3926 backedges. 0 proven. 1300 refuted. 0 times theorem prover too weak. 2626 trivial. 0 not checked. [2022-11-22 02:22:56,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306366191] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:22:56,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [447721640] [2022-11-22 02:22:56,181 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2022-11-22 02:22:56,181 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:22:56,183 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:22:56,183 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:22:56,183 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:23:18,932 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 117 for LOIs [2022-11-22 02:23:19,097 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 121 for LOIs [2022-11-22 02:23:19,269 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 144 for LOIs [2022-11-22 02:23:19,424 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 63 for LOIs [2022-11-22 02:23:19,439 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 129 for LOIs [2022-11-22 02:23:19,796 INFO L197 IcfgInterpreter]: Interpreting procedure is_do_write_p_triggered with input of size 85 for LOIs [2022-11-22 02:23:19,884 INFO L197 IcfgInterpreter]: Interpreting procedure is_do_read_c_triggered with input of size 33 for LOIs [2022-11-22 02:23:19,939 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:23:39,514 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '234040#(and (not (<= ~p_num_write~0 2147483646)) (<= ~q_buf_0~0 2147483647) (= ~p_last_write~0 ~q_buf_0~0) (<= 0 (+ ~q_buf_0~0 2147483648)) (or (and (<= 1 ~p_dw_i~0) (<= 0 ~t~0) (<= 1 |ULTIMATE.start_start_simulation_~kernel_st~0#1|) (<= 0 |#NULL.base|) (<= |ULTIMATE.start_start_simulation_~kernel_st~0#1| 1) (<= 1 ~c_dr_i~0) (<= 0 |ULTIMATE.start_stop_simulation_~__retres2~0#1|) (<= 0 ~c_dr_pc~0) (<= ~c_num_read~0 0) (<= ~c_last_read~0 0) (<= ~c_dr_i~0 1) (<= 1 ~p_dw_st~0) (<= |ULTIMATE.start_stop_simulation_~__retres2~0#1| 0) (<= |ULTIMATE.start_eval_~tmp~2#1| 2147483647) (<= |ULTIMATE.start_start_simulation_~tmp___0~3#1| 0) (<= 0 |ULTIMATE.start_start_simulation_~tmp___0~3#1|) (<= ~c_dr_pc~0 1) (<= |ULTIMATE.start_stop_simulation_~tmp~3#1| 1) (<= 0 |ULTIMATE.start_stop_simulation_#res#1|) (<= |ULTIMATE.start_stop_simulation_#res#1| 0) (<= |#NULL.offset| 0) (<= ~p_dw_i~0 1) (<= ~fast_clk_edge~0 2) (<= 0 |ULTIMATE.start_stop_simulation_~tmp~3#1|) (<= |ULTIMATE.start_eval_~tmp___1~0#1| 1) (<= ~q_free~0 1) (<= |ULTIMATE.start_start_simulation_~tmp~4#1| 1) (<= 2 ~p_dw_pc~0) (<= ~t~0 0) (<= 2 ~slow_clk_edge~0) (<= |#NULL.base| 0) (<= 2 ~fast_clk_edge~0) (<= 0 |ULTIMATE.start_eval_~tmp___1~0#1|) (<= ~p_dw_pc~0 2) (<= ~p_dw_st~0 1) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_start_simulation_~tmp~4#1|) (<= 0 ~c_num_read~0) (<= ~slow_clk_edge~0 2) (<= 0 ~c_last_read~0) (<= 0 (+ |ULTIMATE.start_eval_~tmp~2#1| 2147483648))) (and (<= 1 ~p_dw_i~0) (<= 0 ~t~0) (<= 1 |ULTIMATE.start_start_simulation_~kernel_st~0#1|) (<= 0 |#NULL.base|) (<= |ULTIMATE.start_start_simulation_~kernel_st~0#1| 1) (<= 1 ~c_dr_i~0) (<= ~p_dw_pc~0 1) (<= 0 |ULTIMATE.start_stop_simulation_~__retres2~0#1|) (<= 0 ~c_dr_pc~0) (<= ~c_num_read~0 0) (<= ~c_last_read~0 0) (<= ~c_dr_i~0 1) (<= 1 ~p_dw_st~0) (<= |ULTIMATE.start_stop_simulation_~__retres2~0#1| 0) (<= |ULTIMATE.start_eval_~tmp~2#1| 2147483647) (<= |ULTIMATE.start_start_simulation_~tmp___0~3#1| 0) (<= 0 |ULTIMATE.start_start_simulation_~tmp___0~3#1|) (<= ~c_dr_pc~0 1) (<= |ULTIMATE.start_stop_simulation_~tmp~3#1| 1) (<= 0 |ULTIMATE.start_stop_simulation_#res#1|) (<= |ULTIMATE.start_stop_simulation_#res#1| 0) (<= 1 ~p_dw_pc~0) (<= |#NULL.offset| 0) (<= ~p_dw_i~0 1) (<= ~fast_clk_edge~0 2) (<= 0 |ULTIMATE.start_stop_simulation_~tmp~3#1|) (<= |ULTIMATE.start_eval_~tmp___1~0#1| 1) (<= ~q_free~0 1) (<= |ULTIMATE.start_start_simulation_~tmp~4#1| 1) (<= ~t~0 0) (<= 2 ~slow_clk_edge~0) (<= |#NULL.base| 0) (<= 2 ~fast_clk_edge~0) (<= 0 |ULTIMATE.start_eval_~tmp___1~0#1|) (<= ~p_dw_st~0 1) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_start_simulation_~tmp~4#1|) (<= 0 ~c_num_read~0) (<= ~slow_clk_edge~0 2) (<= 0 ~c_last_read~0) (<= 0 (+ |ULTIMATE.start_eval_~tmp~2#1| 2147483648)))) (or (and (not (= |ULTIMATE.start_eval_~tmp~2#1| 0)) (not (= ~q_free~0 0)) (not (= |ULTIMATE.start_eval_~tmp___1~0#1| 0))) (and (not (= |ULTIMATE.start_eval_~tmp~2#1| 0)) (= 2 ~p_dw_pc~0) (not (= |ULTIMATE.start_eval_~tmp___1~0#1| 0)))))' at error location [2022-11-22 02:23:39,514 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:23:39,515 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:23:39,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 5, 6] total 26 [2022-11-22 02:23:39,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272316971] [2022-11-22 02:23:39,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:23:39,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-22 02:23:39,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:23:39,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-22 02:23:39,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=475, Invalid=6167, Unknown=0, NotChecked=0, Total=6642 [2022-11-22 02:23:39,520 INFO L87 Difference]: Start difference. First operand 12918 states and 15107 transitions. Second operand has 26 states, 23 states have (on average 19.565217391304348) internal successors, (450), 23 states have internal predecessors, (450), 16 states have call successors, (111), 7 states have call predecessors, (111), 11 states have return successors, (112), 18 states have call predecessors, (112), 16 states have call successors, (112) [2022-11-22 02:24:35,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:24:35,354 INFO L93 Difference]: Finished difference Result 56925 states and 71946 transitions. [2022-11-22 02:24:35,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 827 states. [2022-11-22 02:24:35,378 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 19.565217391304348) internal successors, (450), 23 states have internal predecessors, (450), 16 states have call successors, (111), 7 states have call predecessors, (111), 11 states have return successors, (112), 18 states have call predecessors, (112), 16 states have call successors, (112) Word has length 625 [2022-11-22 02:24:35,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:24:35,573 INFO L225 Difference]: With dead ends: 56925 [2022-11-22 02:24:35,574 INFO L226 Difference]: Without dead ends: 39852 [2022-11-22 02:24:35,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2974 GetRequests, 2010 SyntacticMatches, 77 SemanticMatches, 887 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392607 ImplicationChecksByTransitivity, 49.0s TimeCoverageRelationStatistics Valid=42975, Invalid=746457, Unknown=0, NotChecked=0, Total=789432 [2022-11-22 02:24:35,692 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 9925 mSDsluCounter, 2647 mSDsCounter, 0 mSdLazyCounter, 26322 mSolverCounterSat, 6114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9955 SdHoareTripleChecker+Valid, 3058 SdHoareTripleChecker+Invalid, 32436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 6114 IncrementalHoareTripleChecker+Valid, 26322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:24:35,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9955 Valid, 3058 Invalid, 32436 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [6114 Valid, 26322 Invalid, 0 Unknown, 0 Unchecked, 20.6s Time] [2022-11-22 02:24:35,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39852 states. [2022-11-22 02:24:38,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39852 to 26746. [2022-11-22 02:24:38,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26746 states, 18575 states have (on average 1.1428263795423956) internal successors, (21228), 18967 states have internal predecessors, (21228), 4551 states have call successors, (4551), 3182 states have call predecessors, (4551), 3619 states have return successors, (5768), 4597 states have call predecessors, (5768), 4551 states have call successors, (5768) [2022-11-22 02:24:38,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26746 states to 26746 states and 31547 transitions. [2022-11-22 02:24:38,644 INFO L78 Accepts]: Start accepts. Automaton has 26746 states and 31547 transitions. Word has length 625 [2022-11-22 02:24:38,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:24:38,645 INFO L495 AbstractCegarLoop]: Abstraction has 26746 states and 31547 transitions. [2022-11-22 02:24:38,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 19.565217391304348) internal successors, (450), 23 states have internal predecessors, (450), 16 states have call successors, (111), 7 states have call predecessors, (111), 11 states have return successors, (112), 18 states have call predecessors, (112), 16 states have call successors, (112) [2022-11-22 02:24:38,646 INFO L276 IsEmpty]: Start isEmpty. Operand 26746 states and 31547 transitions. [2022-11-22 02:24:38,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1390 [2022-11-22 02:24:38,793 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:24:38,794 INFO L195 NwaCegarLoop]: trace histogram [85, 43, 43, 43, 43, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 19, 19, 12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:24:38,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-22 02:24:39,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-22 02:24:39,004 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 02:24:39,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:24:39,004 INFO L85 PathProgramCache]: Analyzing trace with hash -738735822, now seen corresponding path program 1 times [2022-11-22 02:24:39,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:24:39,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137906213] [2022-11-22 02:24:39,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:24:39,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:24:39,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:24:40,705 INFO L134 CoverageAnalysis]: Checked inductivity of 21075 backedges. 1311 proven. 292 refuted. 0 times theorem prover too weak. 19472 trivial. 0 not checked. [2022-11-22 02:24:40,705 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:24:40,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137906213] [2022-11-22 02:24:40,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137906213] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:24:40,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160776397] [2022-11-22 02:24:40,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:24:40,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:24:40,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:24:40,719 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:24:40,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-22 02:24:41,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:24:41,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 4292 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-22 02:24:41,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:24:43,297 INFO L134 CoverageAnalysis]: Checked inductivity of 21075 backedges. 0 proven. 19737 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2022-11-22 02:24:43,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:24:45,238 INFO L134 CoverageAnalysis]: Checked inductivity of 21075 backedges. 0 proven. 7754 refuted. 0 times theorem prover too weak. 13321 trivial. 0 not checked. [2022-11-22 02:24:45,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160776397] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:24:45,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [805564977] [2022-11-22 02:24:45,244 INFO L159 IcfgInterpreter]: Started Sifa with 75 locations of interest [2022-11-22 02:24:45,245 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:24:45,245 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:24:45,245 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:24:45,245 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:24:53,421 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 62 for LOIs [2022-11-22 02:24:53,432 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 62 for LOIs [2022-11-22 02:24:53,442 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 74 for LOIs [2022-11-22 02:24:53,451 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 32 for LOIs [2022-11-22 02:24:53,456 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 51 for LOIs [2022-11-22 02:24:53,595 INFO L197 IcfgInterpreter]: Interpreting procedure is_do_write_p_triggered with input of size 51 for LOIs [2022-11-22 02:24:53,712 INFO L197 IcfgInterpreter]: Interpreting procedure is_do_read_c_triggered with input of size 51 for LOIs [2022-11-22 02:24:53,782 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:25:10,009 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '367512#(and (not (<= ~p_num_write~0 2147483646)) (<= ~q_buf_0~0 2147483647) (= ~p_last_write~0 ~q_buf_0~0) (<= 0 (+ ~q_buf_0~0 2147483648)) (or (and (<= 0 ~t~0) (not (= |ULTIMATE.start_eval_~tmp~2#1| 0)) (= ~c_num_read~0 0) (<= 0 ~c_dr_pc~0) (<= |ULTIMATE.start_eval_~tmp~2#1| 2147483647) (= ~c_last_read~0 0) (= 1 ~c_dr_i~0) (= |ULTIMATE.start_start_simulation_~kernel_st~0#1| 1) (= 2 ~p_dw_pc~0) (= ~slow_clk_edge~0 2) (<= |ULTIMATE.start_eval_~tmp___1~0#1| 1) (not (= |ULTIMATE.start_eval_~tmp___1~0#1| 0)) (= ~p_dw_st~0 1) (<= ~q_free~0 1) (= ~p_dw_i~0 1) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_eval_~tmp___1~0#1|) (= 2 ~fast_clk_edge~0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (<= 0 (+ |ULTIMATE.start_eval_~tmp~2#1| 2147483648))) (and (<= 0 ~t~0) (not (= |ULTIMATE.start_eval_~tmp~2#1| 0)) (= ~c_num_read~0 0) (<= 0 ~c_dr_pc~0) (<= |ULTIMATE.start_eval_~tmp~2#1| 2147483647) (= ~c_last_read~0 0) (= 1 ~c_dr_i~0) (= |ULTIMATE.start_start_simulation_~kernel_st~0#1| 1) (= ~slow_clk_edge~0 2) (not (= ~q_free~0 0)) (<= |ULTIMATE.start_eval_~tmp___1~0#1| 1) (= ~p_dw_pc~0 1) (not (= |ULTIMATE.start_eval_~tmp___1~0#1| 0)) (= ~p_dw_st~0 1) (<= ~q_free~0 1) (= ~p_dw_i~0 1) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_eval_~tmp___1~0#1|) (= 2 ~fast_clk_edge~0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (<= 0 (+ |ULTIMATE.start_eval_~tmp~2#1| 2147483648)))))' at error location [2022-11-22 02:25:10,009 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:25:10,009 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:25:10,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 12] total 27 [2022-11-22 02:25:10,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515022442] [2022-11-22 02:25:10,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:25:10,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-22 02:25:10,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:25:10,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-22 02:25:10,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=825, Invalid=6147, Unknown=0, NotChecked=0, Total=6972 [2022-11-22 02:25:10,014 INFO L87 Difference]: Start difference. First operand 26746 states and 31547 transitions. Second operand has 27 states, 27 states have (on average 33.074074074074076) internal successors, (893), 27 states have internal predecessors, (893), 27 states have call successors, (216), 12 states have call predecessors, (216), 14 states have return successors, (218), 27 states have call predecessors, (218), 27 states have call successors, (218) [2022-11-22 02:25:18,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:25:18,384 INFO L93 Difference]: Finished difference Result 95253 states and 111431 transitions. [2022-11-22 02:25:18,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-22 02:25:18,385 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 33.074074074074076) internal successors, (893), 27 states have internal predecessors, (893), 27 states have call successors, (216), 12 states have call predecessors, (216), 14 states have return successors, (218), 27 states have call predecessors, (218), 27 states have call successors, (218) Word has length 1389 [2022-11-22 02:25:18,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:25:18,630 INFO L225 Difference]: With dead ends: 95253 [2022-11-22 02:25:18,631 INFO L226 Difference]: Without dead ends: 69295 [2022-11-22 02:25:18,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4261 GetRequests, 4000 SyntacticMatches, 135 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19206 ImplicationChecksByTransitivity, 17.0s TimeCoverageRelationStatistics Valid=2036, Invalid=14220, Unknown=0, NotChecked=0, Total=16256 [2022-11-22 02:25:18,695 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 5296 mSDsluCounter, 1546 mSDsCounter, 0 mSdLazyCounter, 1720 mSolverCounterSat, 1571 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5296 SdHoareTripleChecker+Valid, 1912 SdHoareTripleChecker+Invalid, 3291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1571 IncrementalHoareTripleChecker+Valid, 1720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-22 02:25:18,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5296 Valid, 1912 Invalid, 3291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1571 Valid, 1720 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-22 02:25:18,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69295 states. [2022-11-22 02:25:24,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69295 to 67663. [2022-11-22 02:25:24,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67663 states, 47500 states have (on average 1.1266105263157895) internal successors, (53514), 48310 states have internal predecessors, (53514), 10448 states have call successors, (10448), 8696 states have call predecessors, (10448), 9714 states have return successors, (12756), 10657 states have call predecessors, (12756), 10448 states have call successors, (12756) [2022-11-22 02:25:25,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67663 states to 67663 states and 76718 transitions. [2022-11-22 02:25:25,128 INFO L78 Accepts]: Start accepts. Automaton has 67663 states and 76718 transitions. Word has length 1389 [2022-11-22 02:25:25,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:25:25,128 INFO L495 AbstractCegarLoop]: Abstraction has 67663 states and 76718 transitions. [2022-11-22 02:25:25,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 33.074074074074076) internal successors, (893), 27 states have internal predecessors, (893), 27 states have call successors, (216), 12 states have call predecessors, (216), 14 states have return successors, (218), 27 states have call predecessors, (218), 27 states have call successors, (218) [2022-11-22 02:25:25,129 INFO L276 IsEmpty]: Start isEmpty. Operand 67663 states and 76718 transitions. [2022-11-22 02:25:26,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3348 [2022-11-22 02:25:26,001 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:25:26,002 INFO L195 NwaCegarLoop]: trace histogram [181, 91, 91, 91, 91, 69, 69, 69, 69, 69, 69, 69, 69, 69, 69, 69, 68, 65, 46, 46, 46, 46, 46, 46, 46, 46, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 44, 24, 24, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 22, 22, 22, 22, 22, 22, 22, 22, 12, 12, 12, 11, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:25:26,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-22 02:25:26,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:25:26,214 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 02:25:26,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:25:26,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1725039577, now seen corresponding path program 1 times [2022-11-22 02:25:26,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:25:26,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436672204] [2022-11-22 02:25:26,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:25:26,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:25:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:25:31,438 INFO L134 CoverageAnalysis]: Checked inductivity of 115479 backedges. 4613 proven. 775 refuted. 0 times theorem prover too weak. 110091 trivial. 0 not checked. [2022-11-22 02:25:31,439 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:25:31,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436672204] [2022-11-22 02:25:31,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436672204] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:25:31,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6177027] [2022-11-22 02:25:31,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:25:31,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:25:31,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:25:31,442 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:25:31,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-22 02:25:33,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:25:33,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 10130 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 02:25:33,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:25:33,741 INFO L134 CoverageAnalysis]: Checked inductivity of 115479 backedges. 28776 proven. 0 refuted. 0 times theorem prover too weak. 86703 trivial. 0 not checked. [2022-11-22 02:25:33,742 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:25:33,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6177027] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:25:33,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:25:33,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-11-22 02:25:33,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765417614] [2022-11-22 02:25:33,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:25:33,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:25:33,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:25:33,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:25:33,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:25:33,747 INFO L87 Difference]: Start difference. First operand 67663 states and 76718 transitions. Second operand has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 4 states have call successors, (44), 4 states have call predecessors, (44), 4 states have return successors, (44), 4 states have call predecessors, (44), 4 states have call successors, (44) [2022-11-22 02:25:38,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:25:38,131 INFO L93 Difference]: Finished difference Result 115711 states and 131472 transitions. [2022-11-22 02:25:38,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:25:38,132 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 4 states have call successors, (44), 4 states have call predecessors, (44), 4 states have return successors, (44), 4 states have call predecessors, (44), 4 states have call successors, (44) Word has length 3347 [2022-11-22 02:25:38,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:25:38,345 INFO L225 Difference]: With dead ends: 115711 [2022-11-22 02:25:38,346 INFO L226 Difference]: Without dead ends: 48284 [2022-11-22 02:25:38,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3354 GetRequests, 3348 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:25:38,476 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 45 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:25:38,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 193 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:25:38,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48284 states. [2022-11-22 02:25:43,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48284 to 48242. [2022-11-22 02:25:43,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48242 states, 33699 states have (on average 1.125404314668091) internal successors, (37925), 34400 states have internal predecessors, (37925), 7459 states have call successors, (7459), 6200 states have call predecessors, (7459), 7083 states have return successors, (9317), 7642 states have call predecessors, (9317), 7459 states have call successors, (9317) [2022-11-22 02:25:43,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48242 states to 48242 states and 54701 transitions. [2022-11-22 02:25:43,231 INFO L78 Accepts]: Start accepts. Automaton has 48242 states and 54701 transitions. Word has length 3347 [2022-11-22 02:25:43,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:25:43,233 INFO L495 AbstractCegarLoop]: Abstraction has 48242 states and 54701 transitions. [2022-11-22 02:25:43,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 4 states have call successors, (44), 4 states have call predecessors, (44), 4 states have return successors, (44), 4 states have call predecessors, (44), 4 states have call successors, (44) [2022-11-22 02:25:43,233 INFO L276 IsEmpty]: Start isEmpty. Operand 48242 states and 54701 transitions. [2022-11-22 02:25:43,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3348 [2022-11-22 02:25:43,417 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:25:43,418 INFO L195 NwaCegarLoop]: trace histogram [181, 91, 91, 91, 91, 69, 69, 69, 69, 69, 69, 69, 69, 69, 69, 69, 68, 65, 46, 46, 46, 46, 46, 46, 46, 46, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 44, 24, 24, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 22, 22, 22, 22, 22, 22, 22, 22, 12, 12, 12, 11, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:25:43,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-22 02:25:43,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16d0db6f-b63a-4506-b867-aabb70299175/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-22 02:25:43,635 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 02:25:43,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:25:43,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1717663319, now seen corresponding path program 2 times [2022-11-22 02:25:43,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:25:43,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146646633] [2022-11-22 02:25:43,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:25:43,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:25:43,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat